stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also...

61 Cygni /ˈsɪɡni/ is a binary star system in the northern constellation Cygnus, consisting of a pair of K-type dwarf stars that orbit each other in a...

Albireo /ælˈbɪrioʊ/ is a double star designated Beta Cygni (β Cygni, abbreviated Beta Cyg, β Cyg). The International Astronomical Union uses the name "Albireo"...

designation Iota Cygni (ι Cyg / ι Cygni) is shared by two stars, in the constellation Cygnus: ι1 Cygni, dimmer (magnitude 5.75) ι2 Cygni, brighter (magnitude...

Bayer designation Omega Cygni (ω Cyg / ω Cygni) is shared by two star systems, in the constellation Cygnus: ω1 Cygni ω2 Cygni The name Ruchba has sometimes...

designations are unambiguous: ο1 Cygni: 31 Cygni, sometimes 30 Cygni ο2 Cygni: 32 Cygni, sometimes 31 Cygni ο3 Cygni: sometimes 32 Cygni This set index article...

Bayer designation Pi Cygni (π Cyg / π Cygni) is shared by two stars, in the constellation Cygnus: π1 Cygni (Azelfafage) π2 Cygni All of them were member...

b Cygni is shared by three stars in the constellation Cygnus: b1 Cygni (V2008 Cygni), an RS CVn variable b2 Cygni (V1624 Cygni), a Be star b3 Cygni (V1644...

consisting of Epsilon Cygni, Gamma Cygni, Delta Cygni, 30 Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni and Zeta Cygni. Consequently, the Chinese...

NML Cygni or V1489 Cygni (abbreviated to NML Cyg or V1489 Cyg) is a red hypergiant or red supergiant (RHG or RSG) in the constellation Cygnus. It is one...

16 Cygni A and 16 Cygni B, together with a red dwarf, 16 Cygni C. In 1996 an extrasolar planet was discovered in an eccentric orbit around 16 Cygni B....

P Cygni (34 Cygni) is a variable star in the constellation Cygnus. The designation "P" was originally assigned by Johann Bayer in Uranometria as a nova...

consisting of Gamma Cygni, Delta Cygni, 30 Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Consequently, the Chinese...

The Bayer designation f Cygni is shared by two stars in the constellation Cygnus: f1 Cygni, a Be star f2 Cygni, a K-type supergiant This set index article...

consisting of Deneb, Gamma Cygni, Delta Cygni, 30 Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Consequently, the Chinese name...

Delta Cygni is a binary star of a combined third-magnitude in the constellation of Cygnus. It is also part of the Northern Cross asterism whose brightest...

16 Cygni Bb or HD 186427 b is an extrasolar planet approximately 69 light-years (21 parsecs) away in the constellation of Cygnus. The planet was discovered...

Cygni: All Guns Blazing is a vertically scrolling bullet hell shooter developed by KeelWorks and published by Konami. Players fight waves of aliens in...

Chi Cygni is a Mira variable star in the constellation Cygnus, and also an S-type star. Its name is a Bayer designation that is Latinized from χ Cygni, and...

V404 Cygni is a microquasar and a triple star system in the constellation of Cygnus. It contains a black hole with a mass of about 9 M☉ and an early K...

31 Cygni, also known as ο1 Cygni, Omicron1 Cygni, ο2 Cygni or V695 Cygni, is a ternary star system about 750 light years away in the constellation Cygnus...

KY Cygni is a variable red supergiant or hypergiant of spectral class M3Ia located in the constellation Cygnus. It is approximately 4,700 light-years...

V1974 Cygni or Nova Cygni 1992 was a nova, visible to the naked eye, in the constellation Cygnus. It was discovered visually with 10×50 binoculars on...

V453 Cygni (also designated HD 227696 or BD+35° 3964) is a detached eclipsing binary star system located in the constellation of Cygnus. It consists of...

68 Cygni is a star in the constellation Cygnus. Located approximately 690 parsecs (2,300 ly) distant, the star is a hot blue giant of spectral type O7...

32 Cygni (32 Cyg, Omicron2 Cyg, ο2 Cyg, ο3 Cyg) is a binary star system in the Cygnus constellation. It is a 4th magnitude star, which can be seen with...

V1500 Cygni or Nova Cygni 1975 was a bright nova occurring in 1975 in the constellation Cygnus. It had the second highest intrinsic brightness of any...

SS Cygni is a variable star in the northern constellation Cygnus (the Swan). It was discovered in 1896 by Louisa D. Wells, a computer working under Edward...

ξ Cygni (Latinised as Xi Cygni) is a spectroscopic binary star in the constellation Cygnus, made up of a K-type supergiant star (primary) and an A-type...

AZ Cygni (BD+45 3349) is a red supergiant (M3 Iab) in the constellation of Cygnus. Located 2,090 parsecs (6,800 ly) from Earth, it has been studied by...

Q Cygni (Q Cyg), is a star located in the constellation Cygnus. It is also known as Nova Cygni 1876, and has the designation NGC 7114, and HR 8296. Nova...

Upsilon Cygni is a star in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from υ Cygni, and abbreviated Upsilon...

Theta Cygni (θ Cygni, θ Cyg) is a star in the northern constellation of Cygnus. It has an apparent visual magnitude of 4.5, so it can be seen with the...

29 Cygni (also widely known as HIP 99770) is a single star in the northern constellation of Cygnus. It is dimly visible to the naked eye as a white-hued...

V476 Cygni or Nova Cygni 1920 was a nova which occurred in the constellation Cygnus in 1920. It was discovered by William Frederick Denning, an English...

X Cygni is a variable star in the northern constellation of Cygnus, abbreviated X Cyg. This is a Delta Cephei variable that ranges in brightness from...

1318 (also known as Gamma Cygni Nebula) is the diffuse emission nebula and a H II region surrounding the star Sadr (γ Cygni) at the center of Cygnus's...

the German astronomer Friedrich Bessel. He showed that the star system 61 Cygni had a parallax of just 0.31 arcseconds (compared to the modern value of...

and consists of the brightest stars in Cygnus: Deneb, Sadr, Gienah, Delta Cygni and Albireo. The 'head' of the cross, Deneb, is also part of the Summer...

sphere, this star lies about half a degree from the 4th-magnitude star Eta Cygni. HDE 226868 is a typical O-type supergiant; the strong X-ray emissions from...

V1331 Cygni (also known as V1331 Cyg) is a young star in the located 1,950 light years from Earth on the constellation of Cygnus. V1331 Cyg is located...

Zeta Cygni (ζ Cyg), also named Tianjinnan, is a binary star system in the northern constellation of Cygnus, the swan. It has an apparent visual magnitude...

Y Cygni is an eclipsing and double-lined spectroscopic binary star system in the constellation of Cygnus. It is located about 4,900 light-years from Earth...

RW Cygni is a semiregular variable star in the constellation Cygnus, about a degree east of 2nd magnitude γ Cygni. Its apparent magnitude varies between...

27 Cygni is a subgiant star in the northern constellation of Cygnus. It is faintly visible to the naked eye with an apparent visual magnitude of 5.38...

Pi1 Cygni, also named Azelfafage /əˈzɛlfəfeɪdʒ/, is a star in the northern constellation of Cygnus. It is visible to the naked eye, having a combined...

44 Cygni is a supergiant star in the constellation Cygnus. It is surrounded by the reflection nebula vdB 133. The nebula Sh 2-106 is found less than a...

one of the brightest stars of the Large Magellanic Cloud. The LBV stars P Cygni and η Carinae have been known as unusual variables since the 17th century...

CG Cygni is a ternary star system composed of main-sequence stars in the constellation of Cygnus about 320 light years away. The star CG Cygni A (BD+34...

BI Cygni (abbreviated to BI Cyg), also known as BD+36°4025, is a red supergiant or hypergiant in the constellation Cygnus. It is an irregular variable...

these stars: Gamma Cygni, Delta Cygni, 30 Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Gamma Cygni is known as 天津一...

R Cygni is a variable star of the Mira type in the constellation Cygnus, less than 4' from θ Cygni. This is a red giant star on the asymptotic giant branch...

Mu Cygni is a binary star in the northern constellation of Cygnus. Its name is a Bayer designation that is Latinized from μ Cygni, and abbreviated Mu Cyg...

(also known as 29 Cygni b) is a directly imaged super-Jupiter and gas giant exoplanet orbiting the A-type star HIP 99770 (29 Cygni) and detected with...

Scorpii BC Cygni BI Cygni CK Carinae HD 143183 KY Cygni KW Sagittarii Mu Cephei MY Cephei NML Cygni NR Vulpeculae PZ Cassiopeiae RT Carinae RW Cygni S Persei...

30 Cygni (ο1 Cygni) is a class A5III (white giant) star in the constellation Cygnus. Its apparent magnitude is 4.83 and it is approximately 610 light...

Tau Cygni, Latinised from τ Cygni, also named Enduri Senggu, is a binary star system in the constellation Cygnus, approximately 69 light-years away from...

52 Cygni is a giant star in the northern constellation of Cygnus with an apparent magnitude of 4.22. Based on its Hipparcos parallax, it is about 291...

CH Cygni (CH Cyg / HIP 95413 / BD +49 2999) is a red giant, variable, symbiotic binary in the constellation Cygnus. CH Cygni has a mass of 2 M☉ and a...

V1334 Cygni, also referred to as ADS 14859 and HR 8157 in astronomical literature, is a star about 2,350 light years from the Earth in the constellation...

W Cygni is a semi-regular variable star in the constellation Cygnus, located 570 light-years from Earth. It lies less than half a degree southeast of...

26 Cygni is a single star in the northern constellation of Cygnus. It has the Bayer designation e Cygni, while 26 Cygni is the Flamsteed designation. This...

V389 Cygni, also known as HD 201433 and HR 8094, is a multiple star system about 390 light years from the Earth, in the constellation Cygnus. It is visible...

V380 Cygni is an eclipsing binary star in the constellation Cygnus, located about 3,800 light years away from the Earth. Its apparent magnitude ranges...

V1794 Cygni is a single variable star in the northern constellation Cygnus. It has the identifier HD 199178 from the Henry Draper Catalogue; V1794 Cygni is...

Pi2 Cygni, Latinized from π2 Cygni, is a possible triple star system in the northern constellation of Cygnus. It is visible to the naked eye about 2.5°...

2-119. The nebula surrounds blue giant 68 Cygni. The nebula contains multiple dust lanes and bok globules. 68 Cygni is the primary source of ionization within...

constellation: Gamma Corvi a.k.a. Gienah Corvi, in Corvus Epsilon Cygni a.k.a. Gienah Cygni, in Cygnus The International Astronomical Union approved the name...

Eta Cygni (η Cygni), also named Almighzal, is a star in the northern constellation of Cygnus. It is visible to the naked eye with an apparent visual magnitude...

SU Cygni is a triple star system in the northern constellation of Cygnus, abbreviated SU Cyg. The primary component of the system is a classical Cepheid...

BC Cygni (abbreviated to BC Cyg), also known as BD+37°3903, is a red supergiant or hypergiant pulsating variable star of spectral type M3.5Ia in the constellation...

Lambda Cygni (λ Cyg) is a class B5V (blue main-sequence) star in the constellation Cygnus. Its apparent magnitude is 4.54 and it is approximately 770...

4 Cygni is a binary star system in the northern constellation of Cygnus. It is a faintly visible to the naked eye with an apparent visual magnitude of...

TT Cygni is a carbon star located 561 parsecs (1,830 ly) away in the northern constellation of Cygnus. It is classified as a semiregular variable of subtype...

8 Cygni is a single star in the northern constellation of Cygnus. Based upon its parallax of 3.79 mas, it is approximately 860 light-years (260 parsecs)...

close enough to be taken as marking the pole, while third-magnitude Delta Cygni will be a more helpful pole star, at a distance of 3° from celestial north...

V1668 Cygni was a nova that appeared in the northern constellation of Cygnus, situated a couple of degrees to the southeast of the star Rho Cygni. It was...

a star other than the Sun, by Friedrich Bessel in 1838. The star was 61 Cygni, and he used a 160-millimetre (6.2 in) heliometre designed by Joseph von...

Omega1 Cygni, Latinized from ω1 Cygni, is the Bayer designation for a solitary star in the northern constellation of Cygnus. It is visible to the naked...

lying in the sky at the centre of the triangle formed by Deneb, γ Cygni and δ Cygni. WR 140 is thought to be a prototypical example of cosmic dust production...

Alpha Cygni variables are variable stars which exhibit non-radial pulsations, meaning that some portions of the stellar surface are contracting at the...

V1027 Cygni is a luminous yellow supergiant star located in the constellation of Cygnus, about 14,000 light years away. For a time, it was thought that...

57 Cygni is a close binary star system in the constellation Cygnus, located about 530 light years from Earth. It is visible to the naked eye as a blue-white...

Rho Cygni, Latinized from ρ Cygni, is a yellow-hued star in the northern constellation of Cygnus. It is visible to the naked eye with an apparent magnitude...

Botswana, WMO country code (and obsolete NATO and FIPS country codes) BC Cygni, a red supergiant star that is one of the largest stars Belaruskaja Čyhunka...

431..773R. doi:10.1051/0004-6361:20042039. ISSN 0004-6361. Data about NML Cygni (IRC +40448) is found here at VizieR. Zhang, B.; Reid, M. J.; Menten, K...

This is the list of notable stars in the constellation Vulpecula, sorted by decreasing brightness. List of stars by constellation SGR 1935+2154 D. Hoffleit...

Kappa Cygni, Latinized from κ Cygni, is a star in the northern constellation of Cygnus. It has an apparent visual magnitude of 3.8, which is bright enough...

28 Cygni is a binary star in the northern constellation of Cygnus. It is a faint blue-white hued star but visible to the naked eye with an apparent visual...

2 Cygni is a blue-white hued star in the northern constellation of Cygnus, located a few degrees from Albireo. It is a probable astrometric binary; the...

WR 136 A light curve for V1770 Cygni, plotted from TESS data Observation data Epoch J2000      Equinox ICRS Constellation Cygnus Right ascension 20h 12m...

ψ Cygni, Latinised as Psi Cygni, is a triple star system in the constellation called Cygnus. With a combined apparent visual magnitude of 4.92, it is...

Broom", Lacework Nebula, "Filamentary Nebula") near the foreground star 52 Cygni; The Eastern Veil (also known as Caldwell 33), whose brightest area is NGC...

hole. Some stellar black holes might be grey holes, two of which are V404 Cygni and Cygnus X-1. Q-ball B-ball, stable Q-balls with a large baryon number...

both active flare stars, and the pair are collectively designated V1581 Cygni. The largest of the three stars, GJ 1245 A (G 208-44 A) is only 12% the...

wavelengths, Cygnus X-3 has been given the variable star designation V1521 Cygni. Cygnus X-3 is notable for its intense X-ray emission, but it is also remarkable...

classified as an Algol type eclipsing variable and given the designation V1769 Cygni, but the variation is not strictly periodic and brightness changes occur...

specifically from the 61 Cygni star system; unlike them, he seeks the destruction of humanity. Kurita, a bank clerk, also from the 61 Cygni star system. Sone...

55 Cygni (55 Cyg) is a blue supergiant star in the constellation Cygnus. It is thought to be a member of the Cygnus OB7 stellar association at about 2...

Carolingian-Aquitainian Latin poem sequence first written around 850. Its melody, Planctus cygni ("Swan's Lament"), was popular for some two centuries after its composition...

Phi Cygni, Latinized from φ Cygni, is a binary star system in the northern constellation of Cygnus. It is faintly visible to the naked eye with an apparent...

Wolf Rayet star.[citation needed] Many blue supergiant stars are Alpha Cygni variables. While the stellar wind from a red supergiant is dense and slow...

Iota1 Cygni is a probable binary star system in the northern constellation Cygnus. Its name is a Bayer designation that is Latinized from ι1 Cygni, and...

9 Cygni is a binary star system in the northern constellation of Cygnus. 9 Cygni is its Flamsteed designation. The two stars have a combined magnitude...

Sigma Cygni, Latinised from σ Cygni, is a blue supergiant star in the constellation Cygnus. Its apparent magnitude is 4.2. It belongs to the Cygnus OB4...

uranographia Sometimes Omicron2 Cygni instead of Omicron1 Cygni; often applied to it Sometimes Omicron3 Cygni instead of Omicron2 Cygni; often applied to it Often...

Iota2 Cygni is a single star in the constellation Cygnus. Its name is a Bayer designation that is Latinized from ι2 Cygni, and abbreviated Iota2 Cyg or...

intensity interferometry to determine the distances of the blue supergiants P Cygni and Rigel". Monthly Notices of the Royal Astronomical Society. 515 (1):...

Kurashiki, Japan. He was the first to report the very bright V1500 Cygni (Nova Cygni 1975) at magnitude 3.0 on August 29, 1975; it peaked at 2.0, and many...

71 Cygni is a star in the northern constellation of Cygnus, located 212 light years from the Sun. 71 Cygni is the Flamsteed designation; it has the Bayer...

cosmic distances. There are three subtypes of U Geminorum star (UG): SS Cygni stars (UGSS), which increase in brightness by 2–6 mag in V in 1–2 days,...

59 Cygni is a multiple star system in the northern constellation of Cygnus, located roughly 1,300 light years away from Earth. It is visible to the naked...

DFK 1 Mu Cephei VV Cephei A NML Cygni S Persei UY Scuti VY Canis Majoris Westerlund 1 W26 WOH G64 A KY Cygni BI Cygni VX Sagittarii A survey expected...

Omega2 Cygni, Latinized from ω2 Cygni, is the Bayer designation for a solitary star in the northern constellation of Cygnus. It has an apparent visual...

apparent magnitude ranging from 0.05 to 0.18. It is classified as an Alpha Cygni variable due to the amplitude and periodicity of its brightness variation...

idea came from an object that was at the time believed to exist in the 61 Cygni system, and which might represent an extrasolar planet. The planet is distinctive...

T Cygni is a binary star system in the northern constellation of Cygnus. It is a faint system but visible to the naked eye with a combined apparent visual...

127 −0.039 54+13 −12° SMBH in S82X 0302–0003 0.940+0.058 −0.112 45° V404 Cygni 0.935+0.075 −0.037 37+8 −9° IGR J17454-2919 0.932+0.363 −0.06 54+14 −15°...

ancient name of Bharata Natyam, an Indian classical dance Sadir (or Gamma Cygni), a star in the northern constellation Cygnus This disambiguation page lists...

is located 28' from P Cygni. P Cygni is the brightest star in another hypothetical open cluster, the accordingly named P Cygni Cluster, which is thought...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

consultancy.eu. 2022-03-25. "Accenture buys Swedish software development house Cygni". www.consultancy.eu. 2021-03-30. "Accenture Acquires Ergo". 2022-04-23...

1 (or Icarus) — second most distant star, 9 billion light years away. P Cygni — suddenly brightened in the 17th century WNC4 — Messier Object 40 Zeta...

spectra. He showed that the broad emission lines seen in Wolf-Rayet and P Cygni-type stars were due to strong stellar winds. Beals was the first astronomer...

39 Cygni is a binary star system near the southern border of the northern constellation of Cygnus, approximately 270 light years away from Earth. It is...

47 Cygni is a triple star system in the northern constellation of Cygnus, and is located around 4,000 light years from the Earth. It is visible to the...

22 Cygni is a binary star system in the northern constellation of Cygnus. It is visible to the naked eye as a faint, blue-white hued star with an apparent...

"swan song" (Ancient Greek: κύκνειον ᾆσμα kýkneion ásma; Latin: carmen cygni) refers to a final gesture, effort, or performance given just before death...

later named Mira, was discovered in the 17th century, followed by Chi Cygni then R Hydrae. By 1786, ten had been documented. Variable star discovery...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Nordstrom, B. (1987). "Absolute dimensions of eclipsing binaries. X - V1143 Cygni". Astronomy & Astrophysics. 174: 107–115. Bibcode:1987A&A...174..107A....

20 Cygni is a single, orange-hued star in the northern constellation of Cygnus. It is a faint star but is visible to the naked eye with an apparent visual...

east-north east of Gamma Cygni, also known as Sadr. It may be physically related with the nebula IC 1318 (also known as the Gamma Cygni Nebula) as it lies at...

72 Cygni is a star in the northern constellation of Cygnus, located 299 light years from the Sun and a member of the Hercules stream. It is visible to...

than HeII, The Balmer series hydrogen lines and some other lines have P Cygni profiles. WR 148 is erratically variable on timescales ranging from seconds...

unchanged over the years, are: Sigma Draconis (K0 V) Epsilon Eridani (K2 V) 61 Cygni A (K5 V) Other primary MK standard stars include: 70 Ophiuchi A (K0 V),...

15 Cygni is a single star in the northern constellation Cygnus. With an apparent visual magnitude of 4.90, it is a faint star but visible to the naked...

Draconis K0III – Pollux K0III – Epsilon Cygni K2V – Epsilon Eridani K2III – Kappa Ophiuchi K3III – Rho Boötis K5V – 61 Cygni A K5III – Gamma Draconis Class M...

earlier heraldic-like emblems of Western Australia sometimes used a motto of Cygnis insignis, which means 'distinguished for swans', being a Latin pun on the...

75 Cygni is a binary star system in the northern constellation of Cygnus. It is visible to the naked eye as a dim, reddish-hued point of light with an...

CY Aquarii 10.42 11.20 0.061 B8 AE Ursae Majoris 10.86 11.52 0.086 A9 XX Cygni 11.28 12.13 0.135 A5-F5 BL Camelopardalis 12.92 13.25 0.039 BX Sculptoris...

orbit of Jupiter. The star is usually compared to another similar star, NML Cygni, and has also been described as 'Betelgeuse on steroids'. The first known-recorded...

simple geometric shapes. The Summer Triangle of Deneb, Altair, and Vega – α Cygni, α Aquilae, and α Lyrae – is prominent in the northern hemisphere summer...

A blue band light curve for V1679 Cygni, plotted from data published by Panov et al. (2000)...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Ae/Be star. MWC 349 is also a variable star with the designation V1478 Cygni. MWC 349 is a resolved double star, with its components separated by 2.4...

the orbital motions of 61 Cygni A and B, suggesting that a third body of about 16 Jupiter masses must be orbiting 61 Cygni A. Multiple further claims...

from Voyager Weekly Reports. In 1992, Voyager 2 observed the nova V1974 Cygni in the far-ultraviolet, first of its kind. The further increase in the brightness...

catalogued had been discovered earlier (30 Eridani, Bradley 757, and 44 Cygni). The stars are sometimes given Winnecke designations (e.g. Winnecke 4)...

Project A-Ko C-Ko is the Fourth Princess from the Lepton Kingdom of Alpha Cygni and the long-lost daughter of the Fifth Queen. Alessandra Bellagamba Puss...

designations, but some have survived to refer to astronomical objects: P Cygni for example is still used as a designation for Nova Cyg 1600. Tycho's Star...

Carinae (V533 Car, y Car, y Carinae) is a A-type supergiant and a Alpha Cygni variable star with a mean apparent magnitude of about +4.6 in the constellation...

into interstellar ships containing Corrupted warriors. Kira flees to 61 Cygni on a shuttle and discovers that the Wranaui have started a war with humanity...

star 61 Cygni is designated "Struve 2758" or "STF 2758". Stars of his catalogue are sometimes indicated by the Greek letter sigma, Σ. Thus, 61 Cygni is also...

2,930 light-years (900 parsecs) from the Earth. Rho Leonis is an Alpha Cygni-type variable star, showing 0.032 magnitude brightness variations with a...

Majoris (G8V). Other primary MK standard stars include HD 115043 (G1V) and 16 Cygni B (G3V). The choices of G4 and G6 dwarf standards have changed slightly...

a change was observed in 2019 with the black hole X-ray binary in V404 Cygni. Pulsars emit rapidly repeating radio pulses with extremely high regularity...

Sheliak, a reclusive alien race: Remove the humans on their planet Tau Cygni V within three days, or the Sheliak will exterminate them. Picard sends...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

compared to the best Cepheid evolution models, something also seen in V1334 Cygni. Polaris's rapid period change and pulsation amplitude variations are still...

"Baby's Eyes"   6:26 12. "C'est la vie (Say the Casualties!)"   3:03 13. "61 Cygni Ave" A. Palomo J. Palomo 4:04 14. "News from the Sun (Live Bootleg)" A....

parallax measurements in 1832–1838, for the stars Alpha Centauri, Vega, and 61 Cygni. Stellar parallax is so small that it was unobservable until the 19th century...

"The Monitors" Creed, Edge 2:23 3. "All Data Lost" Creed, Edge 3:25 4. "SS Cygni" Creed, Edge 3:33 5. "Nova Feedback" Edge, John Lambdin, Gary Spain 5:53...

(David Levy, Wendee Levy, Tom Glinos) Nova Cygni 1975, August 30, 1975 (independent discovery) Nova Cygni 1978, September 12, 1978 (independent discovery)...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

times as luminous. The star is slightly and erratically variable, an Alpha Cygni variable. Not all sources consider 6 Cas to be a hypergiant. It is thought...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

atmospheres and mass loss, HD 183143 was found to have Hα lines with P Cygni profiles, but indications of only modest mass loss. Modern high-resolution...

56 Cygni is a single star in the northern constellation of Cygnus, located 135 light years from Earth. It is visible to the naked eye as a white-hued...

appear to line up in sky by the constellation Cygnus and the star Kappa Cygni. The Kappa Cygnids are unusual in that they are absent in most years, but...

74 Cygni is a visual binary star system in the northern constellation Cygnus, located around 249 light years distant from the Sun. It is visible to the...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

image of RSGC1 cluster by Spitzer, with 2MASS image inset Mu Cephei NML Cygni Stephenson 2 DFK 1 – mistakenly referred to as "RSGC1-01" in a 2020 paper...

term ذنب العقاب ðanab al-ʽuqāb meaning "the tail of the eagle". Deneb, α Cygni Deneb (disambiguation) This set index article includes a list of related...

Aries K2 III 4.349 Theta Leonis (Chertan) 165 ± 1 Leo A2 V 3.324 Delta Cygni (Fawaris) 165 ± 4 Cygnus A0 IV 2.87 BD−22 5866 A 166 K7 10.1 B K7 C M1 D...

24 R☉ Luminosity 250,000 L☉ Temperature 63,000 K Other designations V1042 Cygni, WR 135, HD 192103, HIP 99525, BD+35°4013, CCDM J20119+3612, WDS J20119+3612...

Sador can mean: Gamma Cygni, a star commonly known as Sadr or Sador Sador, the chief villain in the movie Battle Beyond the Stars Sador, a fictional place...

solar mass (M☉) (comparable to the members of the binary star system 61 Cygni). This star is relatively near the Sun at a distance of 25.2 light-years...

were no meteors on the photographs) and found a series of images of Nova Cygni 1975 in several stages of brightening. Mayer was a member of the American...

Castle 2024 Contra: Operation Galuga Rocket Knight Adventures: Re-Sparked! CYGNI: All Guns Blazing Castlevania Dominus Collection Powerful Baseball Spirits...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Centauri is a white A-type blue supergiant. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude +5.12 to +5...

astronomy, geodesy and mathematical sciences: 1552 Bessel Bessel's star; see 61 Cygni Bessel (crater) Bessel ellipsoid Besselian elements Besselian epoch Bessel...

a probable member of the 61 Cygni moving group, a group of high velocity stars that share a common motion with 61 Cygni. Anderson, E.; Francis, Ch. (2012)...

(ly) Spectral type Apparent magnitude (V) Comments and references P Cygni (34 Cygni) 5,251 B1-2 Ia-0ep 4.82 The closest luminous blue variable star to...

described the four red supergiant stars, KW Sagittarii, V354 Cephei, KY Cygni and Mu Cephei as the largest and most luminous galactic red supergiants...

 flava Binomial name Amegilla flava (Friese, 1911) Synonyms Anthophora flava Friese, 1911 Asaropoda cygni Rayment, 1931 Asaropoda rickae Rayment, 1951...

in Europe, America, Australia. Species: Catatropis chilinae Catatropis cygni Yamaguti, 1939 Catatropis harwoodi Bullock, 1952 Catatropis hatcheri Catatropis...

1337s −12° 57′ 21.924″ M7.5 B M7.5 C L7.0 WISE 1717+6129 72.7 T8 Epsilon Cygni (Aljanah) 72.7 ± 0.2 Cygnus 20h 46m 12.68236s +33° 58′ 12.9250″ K0III 2...

1838, who used this approach to calculate the 3.5-parsec distance of 61 Cygni. The parallax of a star is defined as half of the angular distance that...

are RA 21h 53.5m , dec +47° 16′. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open cluster M39....

the Pyramid Cluster. It is positioned two degrees south of the star Pi Cygni and around 9° east-northeast of Deneb. The cluster was discovered by Guillaume...

Nu Cygni, Latinized from ν Cygni, is a binary star system in the constellation Cygnus. Its apparent magnitude is 3.94 and it is approximately 374 light...

V1191 Cygni is the variable star designation for an overcontact binary star system in the constellation Cygnus. First found to be variable in 1965, it...

63 Cygni is a single star in the northern constellation of Cygnus, located around 1,030 light years away from Sun. It is visible to the naked eye as an...

Bibcode:1936PA.....44..203D. Duncan, John C. (1929). "The nebulous wreath near η Cygni (abstract)". Popular Astronomy. Vol. 37. p. 580. Bibcode:1929PA.....37Q...

Sumner; Shore, Steven N. (January 1995). "The Birth and Death of Nova V1974 Cygni". Scientific American. 72 (1): 76–81. Bibcode:1995SciAm.272a..76S. doi:10...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Bessel, who published a parallax of 10.3 light years (9.6% too small) for 61 Cygni in 1838. Henderson published his results in 1839, but was relegated to second...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

where he received his Ph.D. in 1978, studying the 1975 explosion of V1500 Cygni at McDonald Observatory. From 1978 to 1980 he was at the Institute of Astronomy...

7 × 10 − 3 {\displaystyle q=7\times 10^{-3}} for the red supergiant NML Cygni and q = 2 × 10 − 3 {\displaystyle q=2\times 10^{-3}} in the long-period...

Size comparison of Betelgeuse, Mu Cephei, KY Cygni, and V354 Cephei according to Emily Levesque's publication...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

open cluster designated Berkeley 87, 9.5′ south of the red supergiant BC Cygni. In 1982, the WC-OVI stars were grouped as members of the new WO class....

Fomalhaut α Piscis Austrini 0025 A3 V Southern 19 1.25 (1.21–1.29var) Deneb α Cygni 2,600 A2 Ia Northern 20 1.25 (1.23–1.31var) Mimosa β Crucis 0280 B0.5 III...

implied and published for other supergiant stars, such as VX Sagittarii, NML Cygni, MY Cephei, and Stephenson 2 DFK 1. In addition, other leading candidates...

of around 9,600 light years. HD 223960 is tentatively classified as an α Cygni variable; its brightness changes erratically by less than a tenth of a magnitude...

60 ±0.9 A & B flare stars B M? 0.11 13.27 15.58 C M? 0.10 14.03 16.34 61 Cygni A (BD+38°4343)$ 11.4039 ±0.0012 Cyg* 21h 06m 53.9s +38° 44′ 58″ K5.0V 0...

constellation of Cygnus, 15,000 light-years away. The central star, V2513 Cygni, is an F-type post-AGB star. The brightest portion of the nebula shows a...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

in the 1970s by Bengt Westerlund, Nils Olander, and B. Hedin. Like NML Cygni, the "WOH" in the star's name comes from the last names of its three discoverers...

Motto of the City of Westminster custos morum keeper of morals A censor cygnis insignis distinguished by its swans Motto of Western Australia cygnus inter...

Light curve of χ Cygni....

V1057 Cygni is a suspected binary star system in the northern constellation of Cygnus. It is a variable star of the FU Orionis-type, and was the second...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

33 Cygni is a single star located 159 light years away in the northern constellation Cygnus. It is visible to the naked eye as a white-hued star with...

Marcela; Jung, Esther; Brunner, Susanne; Herren, Gerhard; Armbruster, Cygni; et al. (10 December 2023). "Pyramiding of transgenic immune receptors from...

497 days and also a flare star, with the variable star designation V1513 Cygni. The flares occur due to material being occasionally accreted onto the surface...

peculiar stars A-type Peculiar  · Metallic Barium Blue straggler Carbon P Cygni S-type Shell Wolf–Rayet Variables – Extrinsic Rotating Alpha2 CVn Ellipsoidal...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

there are "nearly twenty-five million inhabited planets in the Galaxy". 61 Cygni A star system advanced by Lord Dorwin as the potential site for a planet...

The variations had been thought to be the due to the pulsations of an α Cygni variable, but are too predictable and regular. The eclipse-like light curve...

64 to magnitude 1.74, with no clear period, and it is classified as an α Cygni variable. Its spectrum also varies, possibly due to unpredictable changes...

stellar parallax. In 1838 he published a parallax of 0.314 arcseconds for 61 Cygni, which indicated that the star is 10.3 ly away. Compared with the current...

5IVp 5.02 Mintaka Aa1 (Delta Orionis) 1,200 3 O9.5II 2.5 V2119 Cygni 1203±22.3 1 sdO 60 Cygni 1225±57 1 sdO Upsilon Orionis 1,260±75 1 B0V or O9.7V +4.618±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

considered part of Westerlund 1 that may be instead a foreground giant NML Cygni WOH G64 – Possibly the largest known star, at least well-defined RSGC1-F13...

Chi2 Orionis (Chi2 Ori / χ2 Orionis / χ2 Ori) /kaɪ.tuːˈɒraɪ/ is a B-type blue supergiant star in the constellation of Orion. It has an apparent visual...

jet-producing object responsible for broad hydrogen emission lines with P Cygni profiles was widely considered to be a luminous blue variable ejecting matter...

originally from Arabic: البالع al-bāliʿ ('the swallower'). /ælˈbeɪli/ Albireo β1 Cygni Aa Cygnus unknown The source of the name Albireo is not entirely clear....

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Retrieved 2007-02-07. Nova Cygni 1992 Wikimedia Commons has media related to Faint Object Camera. First FOC image Images of Nova Cygni 1992 With Hubble's Old...

another by a P450 enzyme, RccM, which is unique in the Ramularia collo-cygni. This molecule serves as a precursor for the production of a multitude of...

tens to hundreds of days. The faster variations are characteristic of α Cygni variables, irregular pulsating supergiants. The slower variations are accompanied...

Another prominent member of the cluster is the eclipsing binary star V470 Cygni [mk] (HD 228911). The cluster lies at a distance of about 3500 light years...

decades. The prototype is FU Orionis, and other specimens are V1057 Cygni and V1515 Cygni. Of this diverse class of stars, some Orion variables may exhibit...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

(on vehicle licence plates) K-Y Jelly, a brand of personal lubricant KY Cygni, a red supergiant star Karnali Yaks, a Nepalese Twenty20 cricket franchise...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Earth's atmosphere (extrinsic). Her first variable observation captured SS Cygni, a dwarf nova star in the constellation Cygnus. Dwarf novae are a class...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

approximately 0.2665 AU at apastron. Its eccentricity is about the same as 16 Cygni Bb, a so-called "eccentric Jupiter". Until 2009, HD 17156 b was the transiting...

generation ships was deployed to colonise a planet orbiting the star 61 Cygni (which becomes a major segment of the plot of Chasm City). The flotilla...

Amidostomum acutum (Lundahl, 1848) Amidostomum anseris (Zeder, 1800) Amidostomum cygni Wehr, 1933 Amidostomum fulicae (Rudolphi, 1819) Amidostomum henryi Skrjabin...

rotation. He also gave the first interpretation of what is now called a P Cygni profile while discussing the spectrum of Nova Persei 1901. While at the...

Size comparison of Betelgeuse, Mu Cephei, KY Cygni, and V354 Cephei, according to Emily Levesque...

J1655-40 GX339-4 KS1731-260 LS I +61 303 LS 5039 Scorpius X-1 SS 433 V404 Cygni V4641 Sgr V691 CrA XMMU J004243.6+412519 XTE J1118+480 XTE J1550-564 List...

binaries include 61 Cygni (a binary in the constellation Cygnus, composed of two K class (orange) main-sequence stars, 61 Cygni A and 61 Cygni B, which is known...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

et al. (PTI Collaboration) (1999). "Differential Astrometry of the 61 Cygni System with the Palomar Testbed Interferometer". Bulletin of the American...

apparent visual magnitude of about 5.7. 3 Geminorum was found to be an α Cygni variable in 1998 and given the designation PU Geminorum. It varies by a...

10 Persei is a blue supergiant star in the constellation Perseus. Its apparent magnitude is 6.26 although it is slightly variable. 10 Persei is located...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

is dwarfed by even larger red supergiants, such as VY Canis Majoris, KY Cygni, RW Cephei or Mu Cephei. Antares, like the similarly sized red supergiant...

motions of stars to find parallax measurement candidates. One of them, 61 Cygni, was specially appointed as a good candidate for measuring a parallax, which...

Similar red supergiants or hypergiants with strong spectral variability BC Cygni KW Sagittarii S Persei VX Sagittarii Westerlund 1 W26 Cutri, Roc M.; Skrutskie...

white dwarf after its outburst. One example of a symbiotic nova is V1016 Cygni, whose outburst in 1971–2007 clearly indicated a thermonuclear explosion...

Mira". Retrieved 2017-11-19. Lacour, S.; et al. (2009). "The Pulsation of χ Cygni Imaged by Optical Interferometry: A Novel Technique to Derive Distance and...

spectral classification F8Ib. b Velorum has been classified as a suspected α Cygni variable star which varies by only 0.06 magnitude. There are possible periods...

2015), but confirmation of being larger than Dimidium is still needed. 16 Cygni Bb is the first eccentric Jupiter and first in a double star system to be...

constellation of Cygnus. It lies roughly 4° East-Northeast of star Sigma Cygni. At the northeastern edge is a small bipolar planetary nebula Kronberger...

KOBE-1 77.89 ± 0.04 Pisces K7V Has two confirmed exoplanet (KOBE-1b & c). 27 Cygni 78.1 ± 0.2 Cygnus 20h 06m 21.76743s +35° 58′ 20.8875″ G8.5IVa 5.38 Lambda...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Centauri Binary star system 2.21 2.14 Lambda Velorum (Suhail) Star 2.23 Gamma Cygni (Sadr) Star Suspected variable star 2.23 Alpha Cassiopeiae (Schedar) Star...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

iron and P Cygni profiles on some lines. By 1970, HR Carinae and the similar variable AG Carinae were recognised as being related to the P Cygni variables...

[genitive form of constellation name] [year of discovery]" format, e.g. "Nova Cygni 1974" and "Nova Scorpii 2010". An official permanent name is usually soon...

categorized as an eccentric Jupiter was confirmed in 1996, orbiting 16 Cygni. The first exoplanet around a main sequence star was discovered in 51 Pegasi...

Observatory Circular. 8: 59–67. Bibcode:1984SAAOC...8...59C. "eSky: 61 Cygni". www.glyphweb.com. Retrieved 2024-01-05. Kervella, Pierre; Mérand, Antoine;...

1839 after Bessel released his own accurately determined parallax for 61 Cygni in 1838. For this reason, Alpha Centauri is sometimes considered as the...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

variable star. 9 Cephei was given the name V337 Cephei and classified as an α Cygni variable in 1979. It varies irregularly between magnitude 4.69 and 4.78...

Zegelaar, I. (1998). "Hipparcos photometry of 24 variable massive stars (α Cygni variables)". Astronomy and Astrophysics Supplement Series. 128: 117–129...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

rapidly changing jet orientation in the stellar-mass black-hole system V404 Cygni" (PDF). Nature. 569 (7756): 374–377. arXiv:1906.05400. Bibcode:2019Natur...

Eggen, O. J. (1958). "Stellar groups. II. The ζ Herculis, ε Indi and 61 Cygni groups of high-velocity stars". Monthly Notices of the Royal Astronomical...

Cygnus X-2, also known as V1341 Cygni, is a low-mass X-ray binary (LMXB) containing a neutron star as the compact object. It is located in the constellation...

spectral type of S3,4e-S5,8e, S Cassiopeiae is an S-type star similar to χ Cygni; these are asymptotic giant branch (AGB) stars similar to those of class...

the blue-white hue of a B-type star. This star is classified as an Alpha Cygni-type variable star that undergoes periodic non-radial pulsations, which...

referred to as G266 and R92, is a rare yellow hypergiant (YHG) and an Alpha Cygni variable. It is one of the brightest stars in the Large Magellanic Cloud...

Bibcode:1999A&A...352..495M Hauser, H.; Marcy, G. (1999). "The Orbit of 16 Cygni AB". Publications of the Astronomical Society of the Pacific. 111 (757):...

Groot, Martin Jan Hugo, doctoral advisor On the Spectrum and Nature of P Cygni 1970 Lamers, Hermanus Johannes Gerardus Lambertus Maria, copromotor, with...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

consists of hot, massive O-type stars with a peculiar spectrum displaying P Cygni profile hydrogen lines plus specific emission lines for doubly-ionized carbon...

of expelled circumstellar materials, which can produce emission lines, P Cygni profiles, or forbidden lines. The MK system assigns stars to luminosity...

motion of any star visible to the unaided eye, after Groombridge 1830 and 61 Cygni, and the ninth highest overall. This motion will move the star into the...

absolute magnitude of -10 and a luminosity of 787,000 L☉. The star has a P Cygni profile. This is commonly thought to be a characteristic of luminous blue...

astronomy at the University. He calculated the orbit of the double star 61 Cygni and for sometime was involved in geodetical determinations of longitude...

given its variable star designation in 1999. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude 4.19m to 4.23m...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

4800 years ago Thuban (α Draconis) lay a mere 0°.1 from the pole. Deneb (α Cygni) will be the brightest star near the pole in about 8000 years' time, at...

have shown it possesses an emission line profile similar to that of a P Cygni-type, featuring Lyman α and β line pairs. "Your NED Search Results". ned...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1086/145737. Schulte, D. H. (1956). "New Members of the Association VI Cygni". Astrophysical Journal. 124: 530. Bibcode:1956ApJ...124..530S. doi:10.1086/146256...

features typical of Type Ic supernovae, with iron, calcium and sodium P Cygni profiles. The velocities derived from Fe II lines are initially high at...

41 Cygni is a single star in the northern constellation of Cygnus, located near the southern border with Vulpecula. It is visible to the naked eye as...

early 1900s. The first direct measurement of the distance to a star (61 Cygni at 11.4 light-years) was made in 1838 by Friedrich Bessel using the parallax...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

interested in variable stars of which he discovered several, most notably W Cygni in 1884, U Orionis in 1885, and independently discovered Nova Persei. In...

follows: O + S2 → S + SO SO2 → SO + O Sulfur monoxide has been found in NML Cygni. Sulfur monoxide may have some biological activity. The formation of transient...

absorption instead of emission; the Hi lines are unusually narrow and have no P Cygni profile; a lack of any significant absorption features near Hδ; a number...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

(2012). "A new interferometric study of four exoplanet host stars : θ Cygni, 14 Andromedae, υ Andromedae and 42 Draconis". Astronomy & Astrophysics...

variable by about a tenth of a magnitude. It is thought likely to be an α Cygni-type variable. Roman, Nancy G. (1987). "Identification of a constellation...

bright open cluster of stars just south of the central bright star Gamma Cygni of a northerly zone of the sky, Cygnus. It was discovered by Charles Messier...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

usually referred to by their Flamsteed numbers include 51 Pegasi, and 61 Cygni. Flamsteed designations are often used instead of the Bayer designation...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

35 Cygni is a spectroscopic binary star in the constellation Cygnus. Its apparent magnitude is 5.18. Located around 1,000 parsecs (3,300 ly) distant,...

spectrograms - XIX. The superficially normal B stars ζ Draconis, η Lyrae, 8 Cygni and 22 Cygni". Monthly Notices of the Royal Astronomical Society. 296 (4): 856–862...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Zegelaar, I. (1998). "Hipparcos photometry of 24 variable massive stars (α Cygni variables)". Astronomy and Astrophysics Supplement Series. 128: 117–129...

an asterism consisting of λ Andromedae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, β Lacertae, σ Cassiopeiae, ρ Cassiopeiae, τ Cassiopeiae...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

visual magnitude between 4.87 and 4.98, and is suspected of being an Alpha Cygni variable, which are named after Deneb. It is in the same direction and at...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

of the disk. The prototypes of this class are: FU Orionis, V1057 Cygni, V1515 Cygni, and the embedded protostar V1647 Orionis, which erupted in January...

astronomical unit to 200 feet. Friedrich Bessel measured the parallax of 61 Cygni, concluding a distance of 10 light years, making him "the first man who...

likely had a mass of 20 to 25 solar masses when it formed. WOH G64 B90 NML Cygni S Persei The radius of IRAS 05280−6910 can be calculated using the Stefan–Boltzmann...

17 Cygni is the Flamsteed designation for a multiple star system in the northern constellation of Cygnus. It has an apparent visual magnitude of 5.00...

dwarfs. Other stars observed included, Proxima Centauri (a Red Dwarf), SS Cygni (a Binary star), and Sirius (also a Binary star). A third possible discovery...

observations taken with the instrument is ultraviolet photometry of Nova Cygni 1992. Wavelengths of light detected 115 nm to 870 nm Mass : 300 kg or 273...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Mysterious nearly periodic radial velocity variations in the eccentric binary ε Cygni", Astronomy & Astrophysics, 647: A160, arXiv:2102.01999, Bibcode:2021A&A...

Brunthaler, A. (2012). "The distance and size of the red hypergiant NML Cygni from VLBA and VLA astrometry". Astronomy & Astrophysics. 544: A42. arXiv:1207...

already in the final stages of its life. The star is classified as an Alpha Cygni-type variable star and its brightness varies from magnitude +2.38 to +2...

Weigelt Blobs. Most lines show a P Cygni profile but with the absorption wing much weaker than the emission. The broad P Cygni lines are typical of strong stellar...

and, when Bessel published a parallax of 0.314″ for the star system 61 Cygni, Struve revised his value for Vega's parallax to nearly double the original...

Head Studios Yacht Club Games Unreleased Jan 26, 2021 Jan 26, 2021  CB  CYGNI: All Guns Blazing Shoot 'em up KeelWorks KeelWorks Aug 6, 2024 Aug 6, 2024...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

up its core hydrogen and is now fusing heavier elements. It is an Alpha Cygni variable (designated V474 Persei), a type of non-radial pulsating variable...

78 000,000.40 05,240 70 Ophiuchi A K5 00.74 000.69 000,000.16 04,410 61 Cygni A M0 00.51 000.60 000,000.072 03,800 Lacaille 8760 M5 00.18 000.15 000,000...

(May 1957). "The Orbits of the Spectroscopic Binaries 52 Persei and 35 Cygni". Astrophysical Journal. 125: 707. Bibcode:1957ApJ...125..707O. doi:10.1086/146344...

scholar Source-address dependent routing or source-specific routing Gamma Cygni or Sadr, a star The Urdu word for president, used to refer to the President...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

to a star) were made by Friedrich Wilhelm Bessel in 1838 for the star 61 Cygni using a Fraunhofer heliometer. This was the 6.2-inch (157.5 mm) aperture...

"Alhena" Almighzal al-Miġzal the Wool spindle المِغْزَل المِغْزَل Eta Cygni Alnair an-Nayyir the Bright one النير النّيّر Alpha Gruis Alnasl an-Naşl...

many times over the following decades. In 1924, it was described as "P Cygni class" and recorded at photographic magnitude 9.5 In 1925, its absolute...

Wilhelm Bessel makes the first accurate measurement of distance to a star, 61 Cygni, using parallax. Thomas Henderson (Alpha Centauri) and Friedrich Georg Wilhelm...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

examples of supernova impostors include the Great Eruption of Eta Carinae, P Cygni, SN 1961V, SN 1954J, SN 1997bs, SN 2008S, and SN 2010dn where detections...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

an asterism consisting of ι Andromedae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, β Lacertae, σ Cassiopeiae, ρ Cassiopeiae, τ Cassiopeiae...

III + B6 V b Persei Perseus Ruban et al. (2006) 4.52 4.68 0.07 A2 V 68 Cygni (V1809 Cyg) Cygnus 4.98 5.09 0.11 O7.5 IIIn((f)) Variability is disputable...

around a K-type star PDS 70b around a K-type star Orion variable EX Lupi P Cygni profile Appenzeller, I; Mundt, R (1989). "T Tauri stars". The Astronomy...

constellation Cygnus, less than a degree to the southwest of the star Ο1 Cygni. It lies at a distance of approximately 12.5 kly from the Sun. The nebula...

183143 HT 183143 95657 19h 27m 26.56s +18° 17′ 45.2″ 6.86 7100 B7Iae Alpha Cygni variable, Vmax = 6.71m, Vmin = 6.95m, P = 40.44 d θ Sge B θ 17 191571 20h...

unnamed astronaut protagonist, returns from a failed 100-year voyage to 61 Cygni to find the Earth devoid of humans. Cars are rusted and covered with moss...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

automated classification from Hipparos photometry suggested it is an α Cygni variable. The observed brightness varies from magnitude +4.63 to +4.72....

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

to the Sun. He also discovered the proper motion of the double star 61 Cygni. The asteroid 1000 Piazzia and a Moon's crater have been christened with...

with a hotter companion which may also be variable. The Mira variable Chi Cygni is an intrinsic S star. When near maximum light, it is the sky's brightest...

history and computer programming. Now he devotes his time to writing. Novel Cygnis, L'Atalante, La Dentelle du cygne, 2010. Mimosa, L'Atalante, La Dentelle...

peculiar spectrum by W. P. Fleming in 1892, matching the profile of a P Cygni star with bright emission lines of hydrogen. In 1930, the brightness of...

being a red supergiant. Extreme red hypergiants VY Canis Majoris and NML Cygni are two such known candidates for a star within a second red supergiant...

National Radio Astronomy Observatory in 1988, which used outbursts of Nova Cygni 1975 as the timer. Fifteen days of observation showed no anomalous radio...

the Rigel (Beta Orionis) systems; the Alpha Quadrant contains Tellar (61 Cygni), Trill, and Betazed. The Dominion, which is one of the most aggressive...

gamma ray repeater) HR 6819 black hole hypothesis PHL 293B ending of P Cygni profile hydrogen emission lines Swift J1818.0–1607 (young magnetar) GW190814...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

Blagg, Mary; Turner, H H (November 1919). "The Long-period Variable W Cygni". Monthly Notices of the Royal Astronomical Society. 80: 41–64. Bibcode:1919MNRAS...

The star has a peculiar variable spectral type with emission lines and P Cygni profiles. At visual maximum it is similar to an A9 star and at minimum close...

R. C.; et al. (July 1978), "Infrared spectra of HM Sagittae and V1016 Cygni", Astrophysical Journal, 223: L93–L95, Bibcode:1978ApJ...223L..93P, doi:10...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

time in the early hours of July 12, 2025 using the bright star Epsilon Cygni. The New Mexico Exoplanet Spectroscopic Survey Instrument (NESSI) is a ground-based...

(Mg+). In this regard, it is similar to the symbiotic star CH Cygni, except that CH Cygni also has neutral oxygen lines. Excess infrared emission signifies...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

between the bright stars Deneb and Delta Cygni as part of the Northern Cross. It is situated south of 31 Cygni, and northeast of the star cluster NGC 6866...

with a stellar classification of B5 Ia. It is suspected to be an Alpha Cygni-type pulsating variable and ranges in brightness from 4.97 down to 5.04...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

the starlight scattered by the dust reveal that the central star V1610 Cygni has a spectral type of F5. The photosphere of an F5 star is about 900 K...

the Cygnus (constellation), discovered again, This refers to the star P Cygni. Favino, Federica (2013). "ODIERNA, Giovan Battista". Dizionario Biografico...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

comets of that year. In the same year he discovered the Mira variable χ Cygni. He also dedicated much time to observing the double star Mizar. He introduced...

to an asterism consisting of β Lacertae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, σ Cassiopeiae, ρ Cassiopeiae, τ Cassiopeiae,...

and planctus on biblical or classical themes (like the Latin Planctus cygni, which is possibly derived from Germanic models). The earliest examples...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Wolf–Rayet emission lines frequently have a broadened absorption wing (P Cygni profile) suggesting circumstellar material. A WO sequence has also been...

naked eye (conservatively limiting unaided visual magnitude to 6.0), 61 Cygni A (magnitude V=5.20) has the highest proper motion at 5.281″ yr−1, discounting...

364 ± 1 G8 IV 7.6±0.01 Mu² Crucis 364 ± 9 Crux B5Vne 5.19 Albireo (Beta¹ Cygni) Aa 364.8+15.6 −15.3 Cygnus K2II 3.21 + 5.85 Ab B8:p Lambda Aquarii (Hydor/Shatabhisha)...

astronomer Friedrich Wilhelm Bessel measured the parallax of the star 61 Cygni successfully, and disproved Ptolemy's claim that parallax motion did not...

(2010). "The detached dust shells of AQ Andromedae, U Antliae, and TT Cygni". Astronomy and Astrophysics. 518: L140. arXiv:1005.2689. Bibcode:2010A&A...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

RW Cephei, an orange hypergiant located in the constellation Cepheus RW Cygni, a red supergiant located in the constellation Cygnus RW Leonis Minoris...

145A, doi:10.1093/mnras/161.2.145. Kuan, P.; Huhi, L. V. (July 1975), "P Cygni stars and mass loss.", Astrophysical Journal, 199: 148–149, Bibcode:1975ApJ...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

designations mark them as variable stars. Examples include R Cygni, RR Lyrae, and V1331 Cygni. The International Astronomical Union delegates the task to...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

being slightly hotter than a standard B1 star. It is classified as an Alpha Cygni type variable star and its brightness varies by a few hundredths of a magnitude...

designation HD 37836. In 1957 it was noted that its spectral lines show a P Cygni profile. HD 37836 is an extremely luminous blue supergiant with parameters...

stars with high proper motion: Piazzi's Flying Star, otherwise known as 61 Cygni Groombridge 1830 This disambiguation page lists articles associated with...

Map centered on the Cygnus molecular complex around the star Sadr (Gamma Cygni); however, much of the complex remains hidden by the dense clouds of dark...

HDE 316825. HD 316285 was identified in 1925 as an unusual star having P Cygni lines in its spectrum, lines with both emission and absorption components...

Georgy, Cyril; Meynet, Georges (2013). "Evolution of blue supergiants and α Cygni variables: Puzzling CNO surface abundances". Monthly Notices of the Royal...

Apocalypse Forrest Griffin A comedy survivalist book Novel 2010 Unspecified Cygnis Vincent Gessler A novel in which Syn the trapper and Ack, his cybernetic...

emission lines and eventually to inverted P Cygni profiles. Hβ shows much weaker emission wings to the inverted P Cygni profiles, and other hydrogen lines show...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

variable Cyg OB2 #12. It also includes one of the largest known stars, NML Cygni. The region is embedded within a wider one of star formation known as Cygnus...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

the high excitation "nebular" lines and developed absorption lines with P Cygni profiles. These spectra were readily identified as being due to a hot nova-like...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

HD 21389 is a supergiant variable star in reflection nebula VdB 15, in the constellation Camelopardalis. It has the variable star designation CE Camelopardalis...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

something to do with the approach of the Alpha Cygnans. It reads that Alpha-Cygni's alien princess will be claimed and demons will be unleashed on the Earth...

oxygen abundance. The same paper described an overabundance of xenon. Weak P Cygni emission features were confirmed in 1984, evidence of stellar winds radiating...

planetary companions: upsilon Andromedae, rho (1) Cancri, tau Bootis, 16 Cygni and rho Coronae Borealis". Astronomy and Astrophysics. 336: 942–952. Bibcode:1998A&A...

hemisphere. It lies approximately 2–2.5° northwest of the bright star Deneb (α Cygni) and is part of the extensive star-forming complexes in the Orion Arm of...

00 II Bp HD 124448 9.94 10.03 II B3p NO Serpentis 10.27 10.39 I B V1920 Cygni 10.30 10.41 I B2/3 CPD -58 2721 10.40 10.60 I B+... BD -9 4395 10.44 10...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

be conspicuous to the unaided eye. The brightest recent example was Nova Cygni 1975. This nova appeared on 29 August 1975, in the constellation Cygnus...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

still possible, allowing for the possibility of a habitable planet. 61 Cygni Barnard's Star List of nearest stars List of nearest K-type stars van Leeuwen...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

gamma ray repeater) HR 6819 black hole hypothesis PHL 293B ending of P Cygni profile hydrogen emission lines Swift J1818.0–1607 (young magnetar) GW190814...

gap include: Epsilon Pegasi Pi Puppis Epsilon Geminorum Beta Arae Gamma Cygni Capella B Canopus, Iota Carinae, and Upsilon Carinae are also starting to...

intensity interferometry to determine the distances of the blue supergiants P Cygni and Rigel". Monthly Notices of the Royal Astronomical Society. 515 (1):...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Aurigae) Schedar (α Cassiopeiae) δ Andromedae ρ Persei Mira (ο Ceti) χ Cygni Rasalgethi (α Herculis) The Sun will exit the main sequence in approximately...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

and almost comparable to OH/IR red hypergiants VY Canis Majoris and NML Cygni. This forms a cometary tail north of the star. It formed some 6.5 to 10...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

consistent with those of red supergiants. AH Scorpii BC Cygni HV 11423 IRC −10414 MY Cephei NML Cygni S Persei Stephenson 2 DFK 1 VY Canis Majoris Westerlund...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

his 1942 and 1957 claims of a planetary system around the nearby star 61 Cygni while working under the direction of Peter van de Kamp at the Sproul Observatory...

1855). NGC 2363-V1 shows an extreme B hypergiant spectrum similar to P Cygni rather than the presently cool Eta Carinae outburst spectrum. Drissen, Laurent;...

Dylan; Waelkens, Christoffel (2019). "Spectroscopic binaries RV Tauri and DF Cygni". Astronomy & Astrophysics. 628: A40. arXiv:1906.10492. Bibcode:2019A&A...

gamma ray repeater) HR 6819 black hole hypothesis PHL 293B ending of P Cygni profile hydrogen emission lines Swift J1818.0–1607 (young magnetar) GW190814...

would have a visual magnitude about 1.5, nearly as bright as Deneb (Alpha Cygni), but because of the dust the observed visual magnitude is 11.4 so that...

contains extra nitrogen and helium emission in its spectrum as well as a P Cygni profile. Assuming a distance of 8,000 pc (appropriate as the massive star...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

members with portable telescopes first viewing from Chews Ridge site - Nova Cygni seen. 1978, September 15 - Fundraising organization, Friends of MIRA formed...

that are BY Draconis variables include Barnard's Star, Kapteyn's Star, 61 Cygni, Ross 248, Lacaille 8760, Lalande 21185, Epsilon Eridani and Luyten 726-8...

analysed. It was given its variable star designation in 1999. It is an α Cygni variable; a supergiant that pulsates erratically on a timescale of days...

designated SN 2011dh, showed a spectrum much bluer than average, with P Cygni profiles, which indicate rapidly expanding material, in its hydrogen-Balmer...

accepted to be a black hole. HDE 226868 O 30±10 7,800±460 2.39±0.14 V404 Cygni Binary star system with orbit t=6.5 d 20h 24m 03.83s +33° 52′ 02.2″ 1989...

3.02 176 HD 125823 4.42 B7IIIpv 8.82 140 HR 2949 4.43 B5IV 1.90 113 28 Cygni 4.93 B2.5Ve 0.70 317 36 Lyncis 5.29 B9 3.83 178 HD 142990 5.43 B5V 0.98...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

96). In addition, it shows more irregular variations typical of an Alpha Cygni variable, irregularly pulsating hot supergiant stars. Mu Sagittarii A appears...

"Spectral Observations, 1965-1968, of the Peculiar Emission Object V1016 Cygni (MH?328-116)" Astrophysical Journal 159 (1970): 963. McCuskey, W. W.; Houk...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

gamma ray repeater) HR 6819 black hole hypothesis PHL 293B ending of P Cygni profile hydrogen emission lines Swift J1818.0–1607 (young magnetar) GW190814...

following stars in the constellation Cetus: Beta Ceti Iota Ceti Deneb, α Cygni Deneb (disambiguation) This disambiguation page lists articles associated...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

23 Cygni is a single, blue-white hued star in the northern constellation Cygnus. It is a faint star, visible to the naked eye, with an apparent visual...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

that Algol's brightness varies 1686 — Gottfried Kirch notices that Chi Cygni's brightness varies 1718 — Edmund Halley discovers stellar proper motions...

Holes, astronomer Phil Charles; the Japanese Ginga (satellite) and V404 Cygni, which orbits a black hole; the William Herschel Telescope in La Palma;...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

have a highly elliptical orbit that crosses the habitable zone (like 16 Cygni B) make it very difficult for an independent Earth-like planet to exist...

; Bechis, K. P. (November 1977). "Variable 2.5 mm CO emission from chi Cygni and Mira". Astrophysical Journal. 218 (L27–L30): L27. Bibcode:1977ApJ.....

analysed. A white supergiant of spectral type A2/A3Iab, it is an Alpha Cygni variable that varies between apparent photographic magnitudes 6.57 and 6...

used the family telescope in 1943–1944 to study the variable red giant RT Cygni. Her thesis research was published by the Astronomical Society of the Pacific...

obtained the spectrograms of the eclipse system with extended atmosphere 32 Cygni. During the solar eclipse of 25 February 1952, observed in Sudan, he obtained...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

Cyg (Nova Cygni 1975)", American Association of Variable Star Observers "The interstellar reddening and distance of Nova Cygni 1975 /V1500 Cygni/", by G...

magnitude with a main period of 2 days 21 hours It was classified as an α Cygni variable. Shortly afterwards it received its variable star designation of...

Plancius, split from Centaurus cross Acrux 0.76 68 Cygnus /ˈsɪɡnəs/ Cyg Cygn Cygni ancient (Ptolemy) swan Deneb 1.25 804 Delphinus /dɛlˈfaɪnəs/ Del Dlph Delphini...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

an asterism consisting of κ Andromedae, α Lacertae, 4 Lacertae, π2 Cygni, π1 Cygni, HD 206267, ε Cephei, β Lacertae, σ Cassiopeiae, ρ Cassiopeiae, τ Cassiopeiae...

'Sevi later transmits a report on these developments to Admiral Jilan al-Cygni who plans to rendezvous with him. Nizat 'Kvarosee is a former Covenant Fleetmaster...

was the instrument with which Bessel measured the annual parallax of 61 Cygni in 1837–38. Utzschneider moved the institute to premises in Müllerstraße...

1544b 1625b 1647b 1649b c 1652b 1708b KOI-868.01 (unconfirmed) Other 16 Cygni Bb Gliese 777 Ab Gliese 777 Ac HD 185269 b HD 187123 b c HD 191806 b HIP...

h? K-type Epsilon Eridani (Ran) (10.4749±0.0037 ly) planet b (Ægir) 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0...