and Pi Orionis), and instead of an arm marked out by Mu Orionis, he holds a club (Chi Orionis). His right leg is represented by Theta Orionis and his...

asterism consisting of π3 Orionis, ο1 Orionis, ο2 Orionis, 6 Orionis, π1 Orionis, π2 Orionis, π4 Orionis, π5 Orionis and π6 Orionis. Consequently, the Chinese...

Iota Orionis (ι Orionis, abbreviated ι Ori) is a multiple star system in the equatorial constellation of Orion the hunter. It is the eighth-brightest member...

Meissa /ˈmaɪsə/, designated Lambda Orionis (λ Orionis, abbreviated Lambda Ori, λ Ori) is a star system in the constellation of Orion. It is a binary star...

Omicron Orionis refers to two distinct star systems in the constellation Orion: ο1 Orionis (4 Orionis), an M3S semiregular variable star ο2 Orionis (9 Orionis)...

Saiph /ˈseɪf/, designation Kappa Orionis (κ Orionis, abbreviated Kappa Ori, κ Ori) and 53 Orionis (53 Ori), is a blue supergiant star and the sixth-brightest...

Bayer designation Phi Orionis (φ Ori, φ Orionis) is shared by two star systems in the constellation Orion. Phi1 Orionis Phi2 Orionis The two stars are separated...

Bayer designation f Orionis is shared by two star systems in the constellation Orion: f1 Orionis (69 Orionis) f2 Orionis (72 Orionis) This set index article...

Chi Orionis (Chi Ori, χ Orionis, χ Ori) is the name of two stars: χ1 Orionis (54 Orionis, HD 39587) χ2 Orionis (62 Orionis, HD 41117) In Johann Bode’s...

at near-infrared wavelengths. Its Bayer designation is α Orionis, Latinised to Alpha Orionis and abbreviated Alpha Ori or α Ori. With a radius between...

constellation of Orion. It has the Bayer designation ε Orionis, which is Latinised to Epsilon Orionis and abbreviated Epsilon Ori or ε Ori. This is a massive...

GW Orionis is a T Tauri type pre-main sequence hierarchical triple star system. It is associated with the Lambda Orionis star-forming region and has an...

Pi Orionis (π Ori, π Orionis) is a group of fairly widely scattered stars in the constellation Orion that constitute the asterism Orion's Shield or Orion's...

It has the designations ζ Orionis, which is Latinised to Zeta Orionis and abbreviated Zeta Ori or ζ Ori, and 50 Orionis, abbreviated 50 Ori. The system...

Sigma Orionis or Sigma Ori (σ Orionis, σ Ori) is a multiple star system in the constellation Orion, consisting of the brightest members of a young open...

Chi1 Orionis (χ1 Ori, χ1 Orionis) is a star about 28 light years away. It is in the constellation Orion, where it can be seen in the tip of the hunter's...

designation θ Orionis (Theta Orionis) is shared by several astronomical objects, located near RA 05h 35m DEC −05° 24′: θ1 Orionis (41 Orionis), the Trapezium...

Eta Orionis is a multiple star in the constellation Orion. It lies a little to the west of Orion's Belt between Delta Orionis and Rigel, being closer...

Mintaka /ˈmɪntəkə/, designation Delta Orionis (δ Orionis, abbreviated Delta Ori, δ Ori) and 34 Orionis (34 Ori), is a quintuple star system some 1,200...

49 Orionis is a single star in the equatorial constellation of Orion. It has the Bayer designation d Orionis, while 49 Orionis is the Flamsteed designation...

name FU Orionis is a variable star designation in the Argelander system, which are assigned sequentially as new variables are discovered. FU Orionis is about...

Upsilon Orionis (υ Ori, υ Orionis) is a star in the constellation Orion. It has the traditional name Thabit /ˈθeɪbɪt/ or Tabit (ﺛﺎﺑﺖ, Arabic for "the...

Orionis (ψ Ori / ψ Orionis) is shared by two stars in the constellation Orion: 25 Orionis (ψ1), a Be star 30 Orionis (ψ2, often just called ψ Orionis)...

red supergiant Betelgeuse (Alpha Orionis). It has the Bayer designation γ Orionis, which is Latinized to Gamma Orionis. With a slightly variable magnitude...

Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis (θ1 Orionis), is a tight open cluster of stars in the heart of the Orion Nebula...

0.65 d FU Ori FU 05h 45m 22.36s +09° 04′ 12.4″ 9.60 F0Iab prototype FU Orionis star BF Ori BF 26403 05h 37m 13.26s −06° 35′ 00.6″ 9.69 A7III UX Ori star...

Nu Orionis (ν Orionis) is a binary star system in the northeastern part of the constellation Orion. It should not be confused with the variable star NU...

constellation of Orion. It has the Bayer designation β Orionis, which is Latinized to Beta Orionis and abbreviated Beta Ori or β Ori. Rigel is the brightest...

Xi Orionis (ξ Orionis) is a binary star system in the northeastern part of the constellation of Orion, well above the red giant star Betelgeuse in the...

V529 Orionis, also known as Nova Orionis 1678, is a variable star which is usually classified as a nova. It was discovered on 28 March 1678 by Johannes...

Tau Orionis (τ Ori, τ Orionis) is a binary star in the constellation Orion. If an imaginary line is drawn north-west between the stars Rigel and Mintaka...

"Alnilam - ε Orionis (epsilon Orionis) - Star in Orion | TheSkyLive". The Sky Live. Retrieved 3 April 2026. "Alnitak - ζ Orionis (zeta Orionis) - Star in...

of the central pair. θ1 Orionis A has been assigned the variable star designation V1016 Orionis. θ1 Orionis A1 and θ1 Orionis A3 form an eclipsing binary...

classes of pre-main-sequence star, FU Orionis (FUor) and EX Lupi (EXor). Studies have revealed that V1647 Orionis is a young stellar object, presumably...

Pi4 Orionis (π4 Ori, π4 Orionis) is a binary star system in the western part of the Orion constellation. It is visible to the naked eye with an apparent...

θ1 Orionis. Visually, θ2 Orionis consists of three stars in a line, each about an arc-minute from the next. The brightest of the three, θ2 Orionis A,...

Bow shock formed by the magnetosphere of the young star LL Orionis (center) as it collides with the Orion Nebula flow...

Theta1 Orionis C (θ1 Orionis C) is a member of the Trapezium open cluster that lies within the Orion Nebula. The star C is the most massive of the four...

V380 Orionis B, is a small, cool object of spectral type M5 or M6 that is either a red dwarf or brown dwarf. One of the component stars of V380 Orionis appears...

11 Orionis is a solitary Ap star in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked eye with an apparent...

25 Orionis, less commonly known by its Bayer designation Psi1 Orionis (ψ1 Orionis, ψ1 Ori) is a fifth-magnitude star in the constellation Orion. It lies...

the Lambda Orionis Ring seen by the Spitzer Space Telescope. Young stars are forming in this region. Barnard 35, a part of the Lambda Orionis Ring seen...

equatorial constellation of Orion. It has the variable star designation V1046 Orionis; HD 37017 is the identifier from the Henry Draper Catalogue. The system...

a result of its rapid rotation, Omega Orionis is a Be class star. Among the stars of this class, Omega Orionis was the first where the magnetic field...

The Lambda Orionis Cluster (also known as the Collinder 69) is an open star cluster located north-west of the star Betelgeuse in the constellation of...

NU Ori is 3 million years. Hierarchy of components in the NU Orionis system NU Orionis was believed to be a single star until 1991, when spectroscopic...

metal that usually is destroyed by the nuclear fusion in the stars. FU Orionis stars or simply "Fuors", are Orion variables that rise 5–6 magnitudes,...

VV Orionis is an eclipsing binary located in the belt region of the constellation Orion. It is a faint naked eye star. The brightness of VV Orionis dips...

Orion OB1 association Orion's Belt Sigma Ori cluster 25 Ori cluster Lambda Orionis molecular ring (Sh2-264) Lambda Ori cluster Barnard 30 Barnard 35 (Angelfish...

69 Orionis is a single star in the equatorial constellation of Orion, positioned a couple of degrees to the north of Xi Orionis. It has the Bayer designation...

star χ1 Orionis and less than an arc-minute from the much fainter eclipsing variable UW Orionis. χ1 Orionis is slightly brighter than U Orionis at its...

Phi1 Orionis is a binary star system in the constellation Orion, positioned less than a degree to the south of Meissa. It is visible to the naked eye...

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...

Pi6 Orionis (π6 Ori, π6 Orionis) is a solitary star in the eastern part of the constellation Orion. It is visible to the naked eye with an apparent visual...

velocity of +6 km/s. A light curve for CI Orionis, plotted from Hipparcos data Orion's Belt, with the orange 31 Orionis towards the west (right) As of 2008...

μ Orionis (Latinised to Mu Orionis, abbreviated to μ Ori or Mu Ori) is a quadruple star system in the constellation Orion, similar to Mizar and Epsilon...

Omicron1 Orionis (ο1 Ori) is a binary star in the northeastern corner of the constellation Orion. It is visible to the naked eye with an apparent visual...

Gliese 208 A visual band light curve for V2689 Orionis, adapted from Kiraga (2012) Observation data Epoch J2000      Equinox ICRS Constellation Orion...

nebula region is likely excited by the hot young star (YSO) called c Orionis, 42 Orionis or HD 37018 in NGC 1977, which appears as a 4.6 magnitude star some...

74 Orionis is a single star in the equatorial constellation of Orion. It has the Bayer designation k Orionis, while 74 Orionis is the Flamsteed designation...

32 Orionis is a triple star system in the equatorial constellation of Orion. It has the Bayer designation A Orionis, while 32 Orionis is the Flamsteed...

Pi1 Orionis (π1 Ori, π1 Orionis) is a star in the equatorial constellation of Orion. It is faintly visible to the naked eye with an apparent visual magnitude...

are some exceptions such as the chain of stars π1, π2, π3, π4, π5 and π6 Orionis. The most stars given the same Bayer designation but with an extra number...

Pi2 Orionis (π2 Ori, π2 Orionis) is the Bayer designation for a solitary star in the equatorial constellation of Orion. Although the Bright Star Catalogue...

S Orionis is an asymptotic giant branch star in the constellation Orion, approximately 480 parsecs (1,600 ly) away. It varies regularly in brightness...

star Mintaka in the constellation Orion (genitive Orionis) is also known as Delta Orionis or 34 Orionis. Many languages have a genitive case, including...

so it is too faint to be seen with the naked eye. UX Orionis is the prototype of the UX Orionis class of variable stars (often called "UXors"), which...

DN Orionis is an Algol variable located in the constellation of Orion. The primary star is a spectral type A0 star and the secondary is an evolved giant...

region that is being ionized by ultraviolet radiation from the nearby Sigma Orionis (σ Ori) multi-star system. An additional half dozen stars provide further...

In stellar evolution, an FU Orionis star (also FU Orionis object, or FUor) is a pre–main-sequence star which displays an extreme change in magnitude and...

Orionis' disc. Artist's impression of the planet-forming disc around V883 Orionis Informative video about the planet-forming disc around V883 Orionis...

of the small birth cluster of four stars. BF Orionis is a Herbig Ae/Be star variable similar to UX Orionis. It is still accreting mass, producing about...

OB1c – the stars in Orion's Sword that are created by 42 Orionis, θ Orionis, and ι Orionis. These stars are about 3–6 million years old. Orion OB1d –...

the constellation Orion. It comprises three stars (42 Orionis, Theta Orionis, and Iota Orionis) and M42, the Orion Nebula, which together are thought...

Pi5 Orionis (π5 Ori, π5 Orionis) is a binary star system in the constellation Orion. It has an apparent visual magnitude of 3.69, which is bright enough...

Omicron2 Orionis (ο2 Ori) is a solitary star in the constellation Orion. It has an apparent visual magnitude of 4.06, which is bright enough to be seen...

but Betelgeuse is only 5° from the neighboring nakshatra Mrigashira (λ Orionis). Alhena is a better match for Ardra's position. The Sun is near Ardra...

42 Orionis, also known as c Orionis or c Ori, is a triple star system in the constellation Orion. Its apparent magnitude is 4.59 and it is approximately...

its variable star designation, W Orionis, in Annie Jump Cannon's 1907 work Second Catalog of Variable Stars. W Orionis is a semiregular variable with an...

Theta1 Orionis B (θ1 Orionis B), also known as BM Orionis, is a multiple star system containing six members. It is also one of the main stars of the Trapezium...

Phi2 Orionis is a star in the constellation Orion, where it forms a small triangle on the celestial sphere with the nearby Meissa and Phi1 Orionis. This...

University Press. p. 170. ISBN 0-521-44921-9. Kaler, James B. "Saiph (Kappa Orionis)". Stars. University of Illinois. Archived from the original on 2012-02-02...

1-023626 is a mid-T type astronomical object in the foreground of the σ Orionis cluster, which is approximately 1,150 light-years from Earth. It was discovered...

Rho Orionis, Latinised from ρ Orionis, is the Bayer designation for an orange-hued binary star system in the equatorial constellation of Orion. It is...

(the other being Upsilon Orionis) marking the top of Orion's right boot. It has the Bayer designation e Orionis, while 29 Orionis is the Flamsteed designation...

V901 Orionis is a variable star in the equatorial constellation of Orion. It is sometimes known as Landstreet's Star and has the designation HD 37776...

This is the list of notable stars in the constellation Monoceros, sorted by decreasing brightness. List of stars by constellation "El Salvador". NameExoWorlds...

on Theta1 Orionis C, which lies on the side of an elongated molecular cloud in a cavity formed by the massive young stars. (Theta1 Orionis C emits 3-4...

Northern Polaris Southern δ Octantis Uranus Northern Sabik Southern 15 Orionis Neptune Northern Sadr Fawaris Southern Regor Other bodies Moon Northern...

h Orionis is a binary star in the constellation Orion. At an apparent magnitude of +5.43, it is faintly visible to the naked eye in locations far from...

orbital period. As of 2021[update], it is suspected that the star system GW Orionis, which contains a large disk of dust and gases and is about 1,300 light...

θ1 Orionis E (Latinised as Theta1 Orionis E) is a double-lined spectroscopic binary located 4' north of θ1 Orionis A in the Trapezium Cluster. The two...

Genentech, a Roche subsidiary agreed a partnership worth $2.1 billion with Orionis Biosciences for the development of a small-molecule protein degrader for...

Wavelengths of the Diameters of alpha Orionis and alpha Scorpii: Changes in Effective Temperature of alpha Orionis and Very Recent Dust Emission". Astrophysical...

Brad (2025-07-03). "VLTI observations of the Orion Belt stars: I. eps Orionis". arXiv:2507.02276 [astro-ph.SR]. Hummel, C. A.; Rivinius, Th.; Nieva,...

Barnard 30 is a dark cloud in the Lambda Orionis ring, north of Lambda Orionis, also called Meissa. The region is about 1300 light years from Earth. The...

Becklin-Neugebauer Object as a Runaway B Star, Ejected 4000 Years Ago from the θ1 Orionis C System" (PDF). Astrophysical Journal. 607 (1): 47–50. arXiv:astro-ph/0401552...

Delta Orionis (Mintaka) which form the belt of Orion. Orion's Sword which hangs from Orion's Belt consists of the stars 42 Orionis, Theta Orionis, Iota...

abbreviations are the first three letters of the constellation name: Ori for Orion/Orionis, Ara for Ara/Arae, and Com for Coma Berenices. Some abbreviations use letters...

V1005 Orionis is a young flare star in the equatorial constellation of Orion. It has the identifier GJ 182 in the Gliese–Jahreiß catalogue; V1005 Ori...

O4I(n)fp Alnilam (Epsilon Orionis) B-type supergiant, spectral type B0Ia, central star of Orion's Belt Saiph (Kappa Orionis) B-type supergiant, spectral...

abbreviated to 2M0535-05 and also known by its variable star designation V2384 Orionis, is a young eclipsing binary brown dwarf system in the Orion Nebula, about...

Theta1 Orionis D (θ1 Orionis D) is a binary star system that is part of the Trapezium open cluster that lies within the Orion Nebula. θ1 Orionis consists...

12 is known as "the hidden planetary" because of the foreground star Mu Orionis making it difficult to observe and Abell 12 being at an apparent magnitude...

69 (1.64–1.74var) Alnilam ε Orionis 1,180 B0 Ia Southern 30 1.74 Alnair α Gruis 0100 B6 V Southern 31 1.77 Alnitak ζ Orionis 01,300 O9.5 Iab, B1 IV, B0...

Orionis A 1,100 ± 80 3 O9.5IVp 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...

22 Orionis is a binary star in the equatorial constellation of Orion. It has the Bayer designation o Orionis, while 22 Orionis is the Flamsteed designation...

4 visibly bright O-type stars are Gamma Velorum, Alnitak (Zeta Orionis), Mintaka (Delta Orionis), and Zeta Puppis. Walborn, N. R.; Fitzpatrick, E.L. (1990)...

confirmed proplyds. It was also the first instance where a B-type star, 42 Orionis is responsible for the photoevaporation. In addition, 4 clear and 4 candidate...

it as: "Dark mass, diam. 4′, on nebulous strip extending south from ζ Orionis", cataloguing the dark nebula as Barnard 33. It has an easily recognizable...

Psi2 Orionis a binary star system in the equatorial constellation of Orion. It has an apparent visual magnitude of 4.6, indicating that it is visible...

var 11 Rigel β Orionis foot (left foot of Orion) 282 S 08° 0.12 12 Capella α Aurigae little she-goat 281 N 46° 0.71 13 Bellatrix γ Orionis female warrior...

Zapatero Osorio et al. discovered iPMOs with Keck spectroscopy in the σ Orionis cluster. The spectroscopy of the objects in the Orion Nebula was published...

51 Orionis is a single star in the equatorial constellation of Orion. It has the Bayer designation b Orionis, while 51 Orionis is the Flamsteed designation...

G 99-47 (V1201 Orionis, EGGR 290) is a nearby degenerate star (white dwarf) of spectral class DAP8 (DAP8.9, or DAP8.7), the single known component of...

stars of which he discovered several, most notably W Cygni in 1884, U Orionis in 1885, and independently discovered Nova Persei. In 2009, the IAU named...

23 Orionis is a double star located around 1,200 light-years (370 parsecs) away from the Sun in the equatorial constellation of Orion. It is visible to...

in 1904, when Johannes Hartmann observed the binary star Mintaka (Delta Orionis) with the Potsdam Great Refractor. Hartmann reported that absorption from...

D. A.; Ohnaka, K.; Driebe, T.; Scholz, M. (2007). "The Mira variable S Orionis: Relationships between the photosphere, molecular layer, dust shell, and...

Pulsations of the Mira variable S Orionis, showing dust production and masers (ESO)...

oscillations White dwarf Eruptive Protostar and PMS Herbig Ae/Be Orion FU Orionis T Tauri Giants and supergiants Luminous blue variable R Coronae Borealis...

Khongjom Nubi (Pleiades) Apaknga (Lunar mansions) Sachung Telheiba (A Orionis) Likla Saphaba (Orion) Chingcharoibi (G Geminorum) Chungshennubi (Cancer)...

split luminosity classes for the O9s. The two MKK O9 V standards were Iota Orionis and 10 Lacertae. The revised Yerkes standards ("MK") presented listed in...

Volans-Carina association Volans + Carina 280 90 formerly Group 30 32 Orionis group 32 Orionis Orion 310 22 η Chamaeleontis moving group η Chamaeleontis Chamaeleon...

vdB 31 vdB 37 V1057 Orionis (M2II-III) vdB 38 HD 34989 (B1V) vdB 42 HD 36412 (kA7hF1VmF3) vdB 47 HD 37387 (K2Ib) vdB 49 Omega Orionis (B3Ve) vdB 67 NGC...

the constellation of Orion. It has the variable-star designation V1149 Orionis (abbreviated to V1149 Ori). With an apparent magnitude of 6.59, it is near...

Cassiopeiae, δ Scorpii, B0.5: β Scorpii, ε Persei B1: ο Persei, β Cephei B2: γ Orionis, π Scorpii, θ Ophiuchi, λ Scorpii, ω Canis Majoris B2.5: γ Pegasi, ζ Cassiopeiae...

204.1 63.8 ± 0.6 GV HIP 38594 63.8 ± 2.0 MV Gliese 3859 63.9 ± 0.7 GV 74 Orionis 64.0 ± 1.1 Orion 06h 16m 26.61911s +12° 16′ 19.7876″ FV Gliese 3383 64...

Pulsations of S Orionis, showing dust production and masers (ESO)...

Triangulum Ruban et al. (2006) 3.52 (Hp) 3.53 (Hp) 0.01 F5 III + M π5 Orionis Orion Ruban et al. (2006) 3.66 3.73 0.07 B2 III + B6 V b Persei Perseus...

brighter than any of the stars in the nearby Orion Nebula such as θ1 Orionis C and θ2 Orionis. HD 36960 forms a close pair with the slightly fainter HD 36959...

stars which had been in the vicinity of Venus, including Chi Orionis, M Tauri, 71 Orionis, Nu Geminorum and Theta Librae.[citation needed] To date, among...

; Jayawardhana, R. (2002-11-01). "Direct detection of the companion of Orionis". Astronomy & Astrophysics. 394 (3): L43–L46. doi:10.1051/0004-6361:20021377...

of the zodiac, and 15 to the south. For instance, the stars nu Orionis and 62 Orionis which are now around ecliptic longitude 91° are attributed longitudes...

+11.48 to 11.55. Ross 47 was given the variable star designation V1352 Orionis in 1997. Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos...

studies in 2013 identified its origin in the quadruple star system V380 Orionis, a multiple system of young stars approximately 0.3 parsecs from the nebula's...

String of Pearls النظم النَّظْم Epsilon Orionis Alnitak an-Niṭāq the Girdle (Orion's Belt) النطاق النِّطَاق Zeta Orionis Alphard al-Fard the Solitary one الفرد...

56 Orionis is a single, variable star in the equatorial constellation of Orion. It has an orange hue and is faintly visible to the naked eye with an apparent...

a blue supergiant star in the Orion constellation, also known as Beta Orionis. Rigel may also refer to: Rigel (comics), a character in a series published...

are all named after stars Alpha Centauri Beta Cygni Gamma Draconis Delta Orionis The cycle was premiered by Gilbert Kalish and Paul Jacobs at the Alice...

prominent dark nebula against the brighter nebular regions of the Lambda Orionis Ring (also known as Sh 2-264). Discovered by astronomer E. E. Barnard in...

Northern Polaris Southern δ Octantis Uranus Northern Sabik Southern 15 Orionis Neptune Northern Sadr Fawaris Southern Regor Other bodies Moon Northern...

15 Orionis is a suspected astrometric binary star system in the equatorial constellation of Orion, near the border with Taurus. It is visible to the naked...

(1981). "The near ultraviolet stellar spectra of alpha Lyrae and beta Orionis". Monthly Notices of the Royal Astronomical Society. 197: 57–74. Bibcode:1981MNRAS...

Michelson, A. A.; Pease, F. G. (1921). "Measurement of the diameter of Alpha Orionis with the interferometer". Astrophysical Journal. 53 (5): 249–259. Bibcode:1921ApJ...

RZ Piscium (or RZ Psc) is a UX Orionis type variable star 608 light-years (186 pc) away, in the constellation Pisces. Over the years, the star has been...

followed by Pipe Nebula and Corona Australis Molecular Cloud). CX330 is a FU Orionis-type protostar undergoing episodic accretion outbursts, making it a unique...

September 17, 2007. A search for substellar members in the Praesepe and σ Orionis clusters, B. M. González-García, M. R. Zapatero Osorio, V. J. S. Béjar...

CropDesign, ActoGeniX, Pronota (formerly Peakadilly), Agrosavfe, Multiplicom, Orionis, Q-biologicals, SoluCel, Aphea.Bio, Rainbow Crops and Aelin Therapeutics...

77 2.76 Beta Herculis (Kornephoros) Binary star system 2.77 2.76 Iota Orionis Quadruple star system 2.79 2.72 Beta Eridani (Cursa) Star 2.79 2.76 Cor...

Northern Polaris Southern δ Octantis Uranus Northern Sabik Southern 15 Orionis Neptune Northern Sadr Fawaris Southern Regor Other bodies Moon Northern...

Mayrit catalogue is a list of stars and high-mass brown dwarfs in the Sigma Orionis cluster. The catalogue uses DENIS and 2MASS data. Later, the source was...

This is thought to show the solar wind from the star L.L. Orionis generating a bow shock (the bright arc)....

definitive evidence for this identification. Video about the protostar V1647 Orionis and its X-ray emission (2004). Protostar outburst - HOPS 383 (2015). Protostar...

study of mass loss from the mid-ultraviolet spectrum of α Cygni (A2 Ia), β Orionis (B8 Ia), and η Leonis (A0 Ib)". The Astrophysical Journal. 223: 207. Bibcode:1978ApJ...

show hosted by Seifu Fantahun Seifu, New York cocktail Saiph or Kappa Orionis, a star in the constellation Orion This disambiguation page lists articles...

apparent size is 14 × 14 arc minutes and it is located around the star Iota Orionis on the southern tip of the Orion constellation. Herschel made his first...

YSO 244-440 Light curve for V2423 Orionis plotted from ASAS-SN data Observation data Epoch J2000      Equinox ICRS Constellation Orion Right ascension...

HD 142527 is listed in the International Variable star index as a UX Orionis variable, with a visible-light magnitude ranging from 8.27 to 8.60. HD...

erythraeus (Spring) Herter ex Nessel Urostachys kupperi Nessel Urostachys orionis Herter Urostachys pilgerianus Herter ex Nessel Urostachys springii (Klotzsch...

Tropical zodiac: 6° – 19°20′ Gemini 5 Mṛgaśiras "The Deer's Head" λ, φ Orionis Astrological leader: Mangala (Mars) Symbol: Deer's head Deity: Soma, the...

Trapezium Cluster by extreme ultraviolet (EUV) radiation emitted by θ1 Orionis C suggests another possible mechanism for the formation of ice giants....

HD 40372, also known as 59 Orionis, V1004 Orionis and HR 2100, is a variable star in the constellation Orion. Its apparent magnitude varies between magnitude...

Antares, retrieved 18 November 2009: "5.1e+02 solRad" VizeR page for S Orionis, retrieved 18 November 2009: "5.3e+02 solRad" Humphreys, Roberta M.; VY...

star RS Canum Venaticorum (abbreviated RS CVn). A nearby example is χ1 Orionis, at only 28 light years away. Otto Struve (1946) first called attention...

multiple names: authors list (link) Sturz, Friedrich Wilhelm, ed. (1820). Orionis Thebani Etymologicon. Leipzig: Weigel. p. 58. Liddell, H.G. and R. Scott...

like HL Tauri (artist concept). Image of the circumtrinary disc around GW Orionis. An artist's concept of a protoplanetary disk Components of proplyd 177-341W...

physicist and astronomer. In 1904, while studying the spectroscopy of Delta Orionis he noticed that most of the spectrum had a shift, except the calcium lines...

"Orbital Periods for the Unusual Dwarf Novae ER Ursae Majoris and V1159 Orionis", Publications of the Astronomical Society of the Pacific, 109: 477–482...

(2001). "Chandra Discovers a Very High Density X-Ray Plasma on the O Star ζ Orionis". The Astrophysical Journal. 548 (1): L45–L48. arXiv:astro-ph/0012190....

Alexandria und Byzanz (Leipzig; repr. Amsterdam 1964). F. W. Sturz (1820), Orionis Thebani Etymologicon (Leipzig). Etymologicon magnum seu magnum grammaticae...

HD 38529 (138 G. Orionis) is a binary star system approximately 138 light-years away in the constellation of Orion. HD 38529 A is a yellow subgiant star...

"Spatially Resolved Hubble Space Telescope Spectra of the Chromosphere of alpha Orionis". Astronomical Journal. 116 (5): 2501. Bibcode:1998AJ....116.2501U. doi:10...

star UX Orionis. The latter, located about 45' west of the clouds, is the prototype of a particular class of variable stars known as UX Orionis variables...

obscurimpressus N.Ito, 2010 Pterostichus okiensis Nakane, 1989 Pterostichus orionis Jedlicka, 1962 Pterostichus pachinus Bates, 1883 Pterostichus platyocularis...

R. (April 1979). "Spectroscopic and photometric variations of the YY Orionis star S CrA". Astronomy & Astrophysics. 74: 21–29. Bibcode:1979A&A....74...

Audard, Marc (2006). "X-ray Emission from the Pre-Main Sequence Systems FU Orionis and T Tauri". Astrophysics and Space Science. 304 (1–4): 165. Bibcode:2006Ap&SS...

see List of Constellation missions Search for "Orion 2" on Wikipedia. 2 Orionis, a star in the Constellation Orion This disambiguation page lists articles...

37..207N. Lee Mohon (12 November 2015). "More Than Meets the Eye: Delta Orionis in Orion's Belt". Schütz, O.; Meeus, G.; Carmona, A.; Juhász, A.; Sterzik...

7 Collinder 140 07h 24.5m −31° 51′ Canis Major 1,226 35 42' 3.5 Sigma Orionis Cluster 05h 38m −02° 36′ Orion 1,263 IC 4756 (Graff's Cluster) 18h 39.0m...

Ophiuchus 16h 57m 40.09785s +09° 22′ 30.1126″ K2III 3.20# 35.66±0.20 13 Orionis 92 Orion 05h 07m 38.32s +09° 28′ 21.8″ G1IV Theta Pegasi (Biham/26 Pegasi)...

; Zavala, R. T. (2013). "Dynamical mass of the O-type supergiant in ζ Orionis A". Astronomy & Astrophysics. 554: A52. arXiv:1306.0330. Bibcode:2013A&A...

Antares Scorpii 3 Mrigashira Soma Meissa Orionis 17 Mūla Nirṛti Shaula Scorpii 4 Ardra Rudra Betelgeuse Orionis 18 Purva Āshāḍha Āpaḥ Alnasl Sagittarii...

000 50,000 BI 253 O6 09.8 035 180,000 38,000 Theta1 Orionis C B0 07.4 018 020,000 30,000 Phi1 Orionis B5 03.8 006.5 000,800 16,400 Pi Andromedae A A0 02...

04550 Leonis +4.0 1670 CK Vulpeculae +2.6 1673 03846 Puppis +3.0 1678 V529 Orionis +6 1783 WY Sagittae +5.4 1848 V841 Ophiuchi +2.0 1853 00856 Trianguli +9...

Cephei Alpha Cygni RV Tauri Eruptive variables Flare stars T Tauri FU Orionis RCr Borealis Luminous blue Cataclysmic Symbiotics Micronova Dwarf nova...

5 177.1 HD 30562 Eridanus 85.27 ± 0.09 5.77 G2IV or G5V or F8V 178 Pi³ Orionis/Tabit Orion 26.32 ± 0.04 3.16 F6 V 179 Orion 40.48 ± 0.01 11.94 M2V or...

interstellar calcium lines in the spectrum of the spectroscopic binary Delta Orionis by Johannes Hartmann in 1904 and the presence of stellar calcium emission...

particularly extreme example is UX Orionis, which is the prototype of "UXORs"; these protostars vary by 2 to 3 magnitudes. FU Orionis variables A small fraction...

heliacal setting of Taurus] North, J.D. (1990) TM = Betelgeuse (Alpha Orionis) setting, TM knife = Triangulum setting, TM cloak = Capella (Alpha Aurigae)...

B8 V 2.61 Xi Aquilae (Libertas) 186 ± 1 Aquila G9.5 IIIb 4.722 Omicron² Orionis 186 ± Orion K2 IIIb 4.06 Gamma Pictoris 186 ± 2 Pictor 05h 49m 49.66006s...

4U 0614+091 A broadband optical light curve for V1055 Orionis, adapted from Zhang et al. (2012) Observation data Epoch J2000.0      Equinox ICRS Constellation...

stars that have remain unchanged since at least the 1940s, are Upsilon Orionis (B0 V), Eta Aurigae (B3 V), and Alkaid (B3 V). Besides these anchor standards...

Lenticular galaxy Caelum 05h 34m 23.4s −30° 48′ 04″ 14.10 1990 Epsilon Orionis Nebula Reflection nebula Orion 05h 36m 12.8s −01° 12′ 07″ 1991 (Within...

Masion Pauri II Ruhini Consisting of 5 stars ꯁꯥꯆꯨꯡ ꯇꯦꯜꯍꯩꯕ Sachungtelheiba Orionis Mrigisera Consisting of 3 stars ꯂꯤꯛꯂꯥ ꯁꯥꯐꯕ Likla Saphaba Orion Adra Consisting...

A.; Kuhn, Michael A. (January 2022). "Age Spreads and Systematics in λ Orionis with Gaia DR2 and the SPOTS Tracks". The Astrophysical Journal. 924 (2):...

These include free-floating planetary-mass objects discovered in the Sigma Orionis cluster, discovery of new gravitational lenses, and the discovery of a...

bellator, the Latin word for warrior. It can also mean: Bellatrix (Gamma Orionis), a star in the constellation of Orion Bellatrix (band) (1992–2001), a...

observed the star cluster within it (previously cataloged as a single star, θ Orionis, by Johann Bayer). The French observer Nicolas-Claude Fabri de Peiresc...

GJ 3379 (Giclas 99-49) is the nearest star in the Orion constellation, located at a distance of 17 light years from the Sun based on parallax. It is a...

also refer to: The Ensis, a mythical sword represented by the star Eta Orionis in the constellation Orion Ensis ensis All pages with titles containing...

PDS 110 itself. Larger-scale aperiodic dimmings have been observed as UX Orionis variables, and PDS 110 may be similar. An independent 2021 study, assuming...

0.5 G 11.72 Has 1 confirmed exoplanet (Kepler-78b). Betelgeuse (Alpha Orionis) A 408 – 548+90 −49 Orion M1–M2 Ia–ab +0.50 The closest red supergiant...

author of Celestial Objects for Common Telescopes and discoverer of S Orionis MPC · 3041 3042 Zelinsky 1981 EF10 David S. Zelinsky, American mathematician...

Balmer jump of two stars: Epsilon Orionis (O9.7 V) on the top and Beta Tauri (B7 III) on the bottom. The vertical blue line represents the limit of the...

mathematician and astronomer Thabit number Tabit (town) (or Thabit), Sudan Upsilon Orionis or Thabit – a star in the constellation Orion Sabit, the Turkish equivalent...

most distant edge of the Orion–Eridanus Superbubble, assuming that the λ Orionis Nebula lies outside. More recent studies suggest that the superbubble extends...

doi:10.1086/105404. Hertzsprung, E. (1922). "Remark on the period of VV Orionis". Bulletin of the Astronomical Institutes of the Netherlands. 1: 22. Bibcode:1922BAN...

Siqueira (Tom Mix) Marilu Bueno Maria Antonieta Siqueira (Mariinha) Luiz Orioni [pt] Miguel Medeiros Ida Gomes Mother Encarnación Antônio Patiño [pt] Father...

constellation of Cygnus. It is a variable star of the FU Orionis-type, and was the second FU Orionis-type variable to be discovered. The system is located...

Haas SAP AG, SAP Labs France Scaleo chip Sequans Communications Sigma Orionis SA, the oldest spin-off company of Sophia Antipolis (founded in 1984 by...

Hayashi track Hayashi limit Henyey track Orion variable T Tauri star FU Orionis star Herbig Ae/Be Luminosity class Subdwarf star Dwarf star Blue dwarf...

(March 2008), "Masses, Luminosities, and Orbital Coplanarities of the μ Orionis Quadruple-Star System from Phases Differential Astrometry", The Astronomical...

0062 Centaurus 12h 40m 46.3s +43° 33′ 59″ M3V 12.239 124.1851±0.0295 Pi3 Orionis (Tabit)$ 26.316±0.036 Orion 04h 49m 50.4s +06° 57′ 41″ F6V 3.16# 123.94±0...

297, been found to have a dusty disk surrounding it, and is also a UX Orionis star, meaning that it shows irregular variations in its brightness. The...

eclipsing binaries - Into the G stars with HS Aurigae, FL Lyrae, and EW Orionis". The Astronomical Journal. 91: 383. Bibcode:1986AJ.....91..383P. doi:10...

the measurement. Variable nebula List of reflected light sources V1647 Orionis Kaler, 1997. "A Star's Moment in the Spotlight". Retrieved 10 February...

B2Vn 0.52 273 HD 145792 6.42 B6IV 1.70 144 HD 37017 6.56 B1.5V 380 Sigma Orionis E 6.61 B2Vp 1.19 329 HD 37776 6.96 B2V 1.54 330 HD 37058 7.30 B3Vp 15.26...

Upper part: Gamma Orionis, Algol B, the Sun (centre), and other objects to scale....

the constellation name (e.g. Centaurus becomes Centauri, Orion becomes Orionis) to get the star name. In the early 19th century few variable stars were...

Northern Polaris Southern δ Octantis Uranus Northern Sabik Southern 15 Orionis Neptune Northern Sadr Fawaris Southern Regor Other bodies Moon Northern...

Northern Polaris Southern δ Octantis Uranus Northern Sabik Southern 15 Orionis Neptune Northern Sadr Fawaris Southern Regor Other bodies Moon Northern...

113.2 ± 0.4 Carina 09h 13m 11.97746s −69° 43′ 01.9473″ A1 III +1.69 Phi² Orionis 113.8 ± 0.7 Orion 05h 36m 54.389s +09° 17′ 26.42″ G8 III-IV +4.081 HD 45652...

Mrigashira – "the deer's head". Also known as āgrahāyaṇī λ "Meissa", φ Orionis Lord: Mangala (Mars) Symbol: Deer's head Deity: Soma, Chandra, the Moon...

10472, DK Ceti, CPD-74 192, HD 21997, HD 32195, HD 37484, HD 38206, V1358 Orionis and HD 85672. The star HD 202917 has a debris disk that was directly imaged...

define the system, are considered to be 78 Ursae Majoris (F2 V) and Pi3 Orionis (F6 V). In addition to those two standards, Morgan & Keenan (1973) considered...

addition of another subgroup, INT, for T Tauri stars, or INT(YY) for YY Orionis stars. The third category of eruptive irregulars are the IS stars, which...

in astrophysics at the Institute of Astronomy Cambridge, researching FU Orionis. While an undergraduate at the University of Southampton she spent a year...

moderately concentrated. The cluster lies 33 arcminutes west-northwest of 73 Orionis. It was discovered by William Herschel on 11 February 1784, and it was...

velocity of over 200 km/s. Their common point of origin intersects with Iota Orionis in the Trapezium cluster, some two and half million years in the past....

(1997). "Abundance Analyses of the Field RV Tauri Variables: EP Lyrae, DY Orionis, AR Puppis, and R Sagittae". The Astrophysical Journal. 479 (1): 427–440...

"Orbital Periods for the Unusual Dwarf Novae ER Ursae Majoris and V1159 Orionis", Publications of the Astronomical Society of the Pacific, 109: 477–482...

confirmed in 1976. A 1993 paper said that it might be a weak-lined YY Orionis star. T Cha might be either a member of the young ε Chamaeleontis association...

The main ionizing star in this nebula is the quadruple star system NU Orionis (HD 37061), the focus of the H II region, 1,360 ± 30 ly (417.0 ± 9.2 pc)...

become peculiar[clarification needed] blue giants. Examples: Meissa (λ Orionis A), an O-type giant. Alcyone (η Tauri), a B-type giant, the brightest star...

Structures in the constellation Orion: Lambda Orionis, binary star Collinder 69, star cluster including Lambda Orionis This disambiguation page lists articles...

Hipparchos have magnitudes between -1.5 (Sirius) and +1.6 (Bellatrix, γ Orionis). The table below shows 22 stars brighter than +1.5 magnitude, but 5 of...

Hemílcio Fróes Alfredo Bastos Neila Tavares Anabela Fernandes Prado Luiz Orioni João Fulgêncio Paulo Gonçalves Maurício Caíres Ana Ariel Idalina Tavares...

Philodendron opacum Croat & Grayum – S.E. Nicaragua to Ecuador Philodendron orionis G.S.Bunting – N.W. Venezuela Philodendron ornatum Schott – Trinidad-Tobago...

recondensation of water could occur over a broader region following an FU Orionis event. At greater distances the growth of solids could again be limited...

Cygni was classified as a Herbig Ae/Be star in 1999 in a catalog of UX Orionis stars. However, this proved incorrect because of the star's its fast rotation...

program Orion I, a transit bus manufactured by Ontario Bus Industries 1 Orionis, a star in the constellation of Orion This disambiguation page lists articles...

be about 400 million years old. NGC 1662 lies 1.7º NE of the star Pi1 Orionis. "NGC 1662". sim-id. Retrieved 2020-07-13. CCD image of NGC 1662, Velimir...

Antholognomici Friedrich Wilhelm Schneidewin (ed.), Coniectanea critica: insunt Orionis Thebani Antholognomici Tituli VIII, Göttingen (1839)  One or more of the...

Aphrodite Stakes 2026 Brielle Club Class Orionis...

An example of a visual binary: Theta1 Orionis C1 (lower) and C2 (upper), as imaged by VLT/GRAVITY....

Orion variables, pre-main-sequence stars, including T Tauri stars and YY Orionis stars Rapid irregular variables, possibly similar to Orion variables with...

216259 68.6 ± 1.7 KV Gliese 396 68.6 ± 0.9 KV HD 124580 68.7 ± 1.2 FV 71 Orionis 68.9 ± 1.3 Orion 06h 14m 50.94s +19° 09′ 24.8″ FV Gliese 889 68.9 ± 2.8...

Northern Polaris Southern δ Octantis Uranus Northern Sabik Southern 15 Orionis Neptune Northern Sadr Fawaris Southern Regor Other bodies Moon Northern...

V1647 Ori, a pre-main sequence star, experienced an outburst called a FU Orionis or EX Lupii type event. Most stars are believed to undergo such events...

tribe of braconid wasps in the subfamily Euphorinae. Shaw, S.R. 1987: Orionis, a new genus from Central America, with an analysis of its phylogenetic...

worlds Vulcan (40 Eridani), Andoria (Procyon), Risa, and the Rigel (Beta Orionis) systems; the Alpha Quadrant contains Tellar (61 Cygni), Trill, and Betazed...

(2000-10-06). "Discovery of Young, Isolated Planetary Mass Objects in the σ Orionis Star Cluster". Science. 290 (5489): 103–107. Bibcode:2000Sci...290..103Z...

Reiland, C.T., & Pourbaix, D. 2002 “A Precise Orbit Determination of chi 1 Orionis from Astrometric and Radial Velocity Data”, PASP 114, 224. Han, I. and...

Cepheus, about six degrees from Polaris Delta Octantis Uranus Eta Ophiuchi 15 Orionis Neptune midway between Gamma Cygni and Delta Cygni Gamma Velorum...

Named after Joseph Algernon Pearce. Persson's Star is V733 Cephei, an FU Orionis type object. Named after R. Persson. Piazzi's Flying Star, see Bessel's...

other planetary systems. There are human colonies on Bellatrix (Gamma Orionis), Sirius 8 and 9, and "Orionus." On these worlds, intensive labour is required...

in the constellation Orion. It corresponds to the stars λ, φ1, and φ2 Orionis. Its position is described in the Surya Siddhānta. The asterism's names...

S2CID 14881959. Tsuji, T. (2000). "Water on the Early M Supergiant Stars α Orionis and μ Cephei". The Astrophysical Journal. 538 (2): 801–807. Bibcode:2000ApJ...

spectra of FU Orionis objects. Aside from explaining many details in the spectra of FUors, observations of the size of the disk in FU Orionis match model...

Aikman, G.C.L; Goldberg, B.A. (1974). "The Orbit and Nature of θ2 Orionis A". Journal of the Royal Astronomical Society of Canada. 68: 205–212. Bibcode:1974JRASC...

Herbig Ae/Be stars Herbig–Haro objects "High-Resolution Spectroscopy of FU Orionis Stars", ApJ 595 (2003) 384–411 "The Young Cluster IC 5146", AJ 123 (2002)...

mechanics. Example spectral standards: B0V – Upsilon Orionis B0Ia – Alnilam B2Ia – Chi2 Orionis B2Ib – 9 Cephei B3V – Alkaid B3V – Eta Aurigae B3Ia –...

typically found in oxygen-rich M-type AGB stars such as R Cassiopeiae and U Orionis, while HCN and SiS masers are generally found in carbon stars such as IRC...

spectrum of C shows very strong, broad hydrogen lines resembling that of θ1 Orionis C, characteristic of very young stars. The star (or at least one of its...

2011). "Spectroscopy of very low mass stars and brown dwarfs in the Lambda Orionis star forming region. I. Enlarging the census down to the planetary mass...

Prince's doctoral thesis was entitled "A Study of the Spectrum of 25 Orionis". Prince served as an assistant professor of astronomy at Wellesley College...

(Nu Draconis), Deneb (Alpha Cygni), Propus (Eta Geminorum), Heka (Lambda Orionis), Rana (Delta Eridani), Regor (Gamma Velorum) Opteron CPUs: Barcelona,...

Impacts between molten planetesimals Meteor ablation Hot inner nebula FU Orionis-type outburst of the early sun Energetic bipolar-shaped outflows Nebular...

(1988). "A white dwarf companion to the main-sequence star 4 Omicron(1) Orionis and the binary hypothesis for the origin of peculiar red giants". Astrophysical...

Earth Peak magnitude Distance (ly) Type Galaxy Remnant Sh2-264 or Lambda Orionis Ring 05h 37m +09° 30′ ~1 million years ago ? 1,100 ? Milky Way ? SNR G000...

Journal, 51 (1920), 4–12, with 4 plates; “Bright and Dark Nebulae near ζ Orionis, Photographed with the 100-inch Hooker Telescope,” ibid., 53 (1921), 392–396...

melasmus Katothrips mitchelli Katothrips neottus Katothrips nodus Katothrips orionis Katothrips papulus Katothrips pendulae Katothrips peratus Katothrips sifrus...

Khongjom Nubi (Pleiades) Apaknga (Lunar mansions) Sachung Telheiba (A Orionis) Likla Saphaba (Orion) Chingcharoibi (G Geminorum) Chungshennubi (Cancer)...

lightning goddess Pakhangba, celestial dragon god Sachung Telheiba (A Orionis) Sajik (Arietis) Salailen (Soraren), father sky who help humans to build...

variability of 1–2 magnitudes due to variations in the rate of accretion. FU Orionis star Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data...

Ophiuchi), a magnitude 2.4 star. Uranus also has a southern polar star, 15 Orionis, a magnitude 4.8 star. Both are fainter than Earth's Polaris (α Ursae Minoris)...

Astronomico del Colegio Cristo Rey I32 Beta Orionis Observatory (Observatorio Beta Orionis) S Observatorio Beta Orionis, Rosario I33 Southern Astrophysical Research...

Michelson, A. A.; Pease, F. G. (1921). "Measurement of the diameter of Alpha Orionis with the interferometer". Astrophysical Journal. 53 (5): 249–259. Bibcode:1921ApJ...

et al. (2006). "A search for substellar members in the Praesepe and Sigma Orionis clusters". Astronomy & Astrophysics. 460 (3): 799–810. arXiv:astro-ph/0609283...

Apparent magnitude (V) Parallax (mas) Notes and additional references Rho Orionis 350 Orion K0 III +4.44 HD 2 350.55 F5 8.2 Zeta¹ Antliae A 350 ± 2 Antlia...

Resolution ALMA Observations of Richly Structured Protoplanetary Disks in σ Orionis". The Astrophysical Journal. 976 (1): 132. arXiv:2410.03823. Bibcode:2024ApJ...

others (link) Mohon, Lee (2015-11-12). "More Than Meets the Eye: Delta Orionis in Orion's Belt". NASA. Retrieved 2018-06-02. "Alert Notice 474: Multiwavelength...

in the rotation of the chemically peculiar stars CU Virginis and V901 Orionis", Astronomy & Astrophysics, 534: 5, arXiv:1110.1104, Bibcode:2011A&A.....

Kléber Macedo Orozimba Sodré Lutero Luiz Cláudio Cidinha Milan Yara Luiz Orioni Juvenal Irma Alvarez Mabel Sebastião Vasconcelos Nilo Sodré Joana Fomm Hilda...

(聖域の始まりと、崩壊の始まり, Seiiki no Hajimari to, Hōkai no Hajimari) "The Day Alpha Orionis Laughed" (平家星の笑った日, Heikeboshi no Waratta Hi) "The Eternal Freezing of...

Observatory, where I looked through the large Fraunhofer refractor at the nebula Orionis, at the cluster of spangles in Auriga, at the blazing light of Sirius,...

"The Eclipsing Variables AG Virginis, AR Lacertae, TX Ursae Majoris, VV Orionis, R Canis Majoris, SV Camelopardalis, ST Persei, RY Persei, VZ Hydrae"....

Mount Wilson to determine the size of the red giant Betelgeuse (Alpha Orionis). Betelgeuse was found to be 300 times larger than the Sun, with a diameter...

APIN, this name was also applied to the pairs of Pi3 and Pi4 Orionis and Zeta and Xi Orionis. The meaning of MASH.TAB.BA evolved as well, becoming the twin...

Abraham; Pease, Francis G. (1921). "Measurement of the diameter of alpha Orionis with the interferometer". Astrophysical Journal. 53 (5): 249–59. Bibcode:1921ApJ...

Orion B complexes and the Orion Nebula, which also includes the Lambda Orionis ring and some of the peripheral regions of the complex, such as gas filaments...

Diana Ênio Santos Koburi Darcy de Souza Norma Emiliano Queiroz Thomaz Luiz Orioni Percy Harrison Gracinda Freire Milenne Márcia de Windsor Josui Álvaro Aguiar...

about him all the time, and the nephew of the thoughtful farmer Tião (Luiz Orioni), who supports him and keeps him in Rio, as well as trying unsuccessfully...

G0V 5 Beta Hydri Hydrus 24.3 G2IV 6 Delta Pavonis Pavo 19.8 G8V 7 Pi3 Orionis Orion 26.3 F6V 8 Gamma Leporis Lepus 29.04 F7V 9 Ran Eridanus 10.5 K2V...

were many undiscovered ones. He soon found that Beta Aurigae and Delta Orionis were eclipsing binaries. Further discoveries followed. The development...

formed T Tauri star in the 3-million-year-old star cluster surrounding 25 Orionis. Ciardi completed his PhD at the University of Wyoming in 1997, and remained...

Bertiau, F. C. (May 1957). "The Orbits of the Spectroscopic Binaries Rho Orionis, Eta Bootis, and 32 Virginis". Astrophysical Journal. 125: 696. Bibcode:1957ApJ...

eclipsing binary stars: Beta Aurigae, Spica, Alpha Coronae Borealis and Delta Orionis. Although the selenium cell photometer was proving successful, it was difficult...

closest core-collapse supernova candidates to Earth. B B2V Bellatrix (Gamma Orionis) 250 ± 10 Orion B2 III 1.64 One of the closest core-collapse supernova...

(4): 71. doi:10.3847/2515-5172/adc739. Kaler, James B. "BELLATRIX (Gamma Orionis)". Stars. University of Illinois. Retrieved 2012-12-27. van Leeuwen, F...

consisting of this star along with Lambda Eridani, Psi Eridani and Tau Orionis. According to a NASA catalogue of stars, Al Kursiyy al Jauzah was the title...

predicted highly evaporating planet was proposed to orbit the star FU Orionis with a density of about 0.0042 g/cm3. Highest planetary rotation rate Kappa...

(November 1994), "Orbital studies of the cataclysmic variables CZ Orionis, V1193 Orionis and BZ Ursae Majoris", Monthly Notices of the Royal Astronomical...

"strongly romantic and lyrical". It was followed by his short story "Zeta Orionis", extracted from his then-unpublished second novel, which won the top award...

(2000). "Discovery of Young, Isolated Planetary Mass Objects in the σ Orionis Star Cluster". Science. 290 (5489): 103–107. Bibcode:2000Sci...290..103Z...

a mere 300,000 years old composed of two pre-main-sequence stars—a FU Orionis star and a Herbig Ae/Be star, which has brightened episodically by two...

Wesmael, 1835 Notioperilitus Belokobylskij, 2018 †Onychoura Brues, 1933 Orionis Shaw, 1987 Perilitus Nees, 1818 Rilipertus Haeselbarth, 1996 Spathicopis...

in 1935. According to the Miramar Ship Index, the vessel was renamed Orionis (1950), Seacastle (1951), Audacious (1951), and Platanos (1953). It was...

light FUOR – (celestial object) FU Orionis objects, a class of variable pre–main sequence stars named after FU Orionis, the archetype for the class also...

ˈkɛnt/) or even Rigil, though the latter name is better known for Rigel (β Orionis). An alternative name found in European sources, Toliman, is an approximation...

(2014). "Spectral Energy Distribution Analysis of Class I and Class II FU Orionis Stars". The Astronomical Journal. 147 (6): 140. arXiv:1402.3240. Bibcode:2014AJ...

semicircular indentation 5 minutes in diameter 30 minutes south of Zeta Orionis". Subsequent professional publications neglected to give credit to Fleming...

Fang, Min; Facchini, Stefano (2016-07-20). "Proplyds Around a B1 Star: 42 Orionis in NGC 1977". The Astrophysical Journal. 826 (1): L15. arXiv:1606.08271...

lower magnitude (0.2). The dingo puppy barrier would be emblematic of 15 Orionis and the contiguous star cluster of π1,2,3,4,5 etc. The Ngarrindjeri have...

Vivas, A. Katherina; Furesz, Gabor; Szentgyorgyi, Andrew (June 2007). "25 Orionis: A Kinematically Distinct 10 Myr Old Group in Orion OB1a". The Astrophysical...

objects really isolated?. A brown dwarf-exoplanet system candidate in the σ Orionis cluster". Astronomy and Astrophysics. 460 (2): 635–640. arXiv:astro-ph/0608659...

image of the λ Orionis ring (Sh2-264), HD 34989 is visible near the right-hand border, above the brilliant star Bellatrix (γ Orionis). HD 34989 in the...

magic and medicine in ancient Egypt Heka, Qinghai, a town in China Lambda Orionis, a star in the constellation of Orion, also known by the traditional names...

1.02 170 HD 34798 6.39 B5Vs 1.28 263 HD 176582 6.40 B5V 1.58 292 V1377 Orionis 6.41 B3III 1.01 476 HR 8768 6.42 B2V 3.25 326 GY Eridani 6.42 B3V 1.33...

reflection nebula, and shines from the light of the variable star V380 Orionis. It was previously believed that the black patch was a dense cloud of dust...

Leading to a CME Associated with a Superflare on the RS CVn-type Star V1355 Orionis". The Astrophysical Journal. 948 (1): 9. arXiv:2301.13453. Bibcode:2023ApJ...

examples include: Sigma Canis Majoris Sigma Draconis Sigma Octantis Sigma Orionis Sigma FC, a Canadian soccer team SK Sigma Olomouc, a Czech association...

light-years (0.26 parsec) and is located in the vicinity of the sigma Orionis cluster. Previously only small mini-jets (≤0.03 parsec) were found around...

directly, not via a reflection. Holoea is similar to L1551 IRS 5, an FU Orionis star. It has a large circumstellar disk that extends from 24.5±0.15 au...

survey Briceno (open star clusters) (for example: Briceno 1 at the star 25 Orionis) Brosch — (open star clusters) Brso/Bso — Brisbane Observatory, Australia...

about 2.6 million years ago this star, μ Columbae and the bright binary ι Orionis were in the same position in space; it was thus hypothesized that these...

among fans as cosplay. The Orions' homeworld, Orion, is located in the Orionis system, in the Orion sector of the Alpha Quadrant. It is an M class world...

1891, Sawyer made observations of the variable stars 1072 Persei, 2100 Orionis, 4940 Hydrae, 5667 Coronae, 5912 Herculis, 6189 Ophiuchi, 6733 Scuti, and...

the Dearborn Observatory; he was certain people were looking at Alpha Orionis (Betelgeuse) a prominent star in the Constellation of Orion. Other astronomers...

team found disk masses similar to disks in Chamaeleon I and the Sigma Orionis Cluster. 20 disks (about 5%) are massive enough to form giant planets....

hydrogen-deficient stars in the 1980s. Helium-rich B stars, such as σ Orionis E, are chemically unusual spectral B or OB main sequence stars that show...

Abraham; Pease, Francis G. (1921). "Measurement of the diameter of alpha Orionis with the interferometer". Astrophysical Journal (PDF). 53 (5): 249–59....

major dimming event started. The companion star is itself a variable of UX Orionis type, exhibiting both chaotic variations of brightness and short (less...

K.; Turner, G. W. (1995). "RZ Leonis Minoris, PG 0943+521, and V1159 Orionis: Three Cataclysmic Variables with Similar and Unusual Outburst Behavior"...

notable works were studies of the Tarantula Nebula, Eta Carinae, Theta1 Orionis C, and the properties of young, massive star clusters. During the 1980s...

Observatory. The first light images included the discovery that Theta1 Orionis F in the Trapezium Cluster is a binary. GRAVITY can operate in single-field...

second O-type star found to have a strong magnetic field, after Theta1 Orionis C. The polar field strength was estimated at −1.5 kG. This detection suggested...

FLUKA FOMP FP420 experiment FRS Fragment Separator FTCS scheme FUTBOLIN FU Orionis star Fabiola Gianotti Fabrication and testing of optical components Fabry–Pérot...

Trapezium cluster in the Orion Nebula two million years ago. The binary Iota Orionis may have been the other half of this collision. AE Aur is seen to light...

This image shows the wind from the star LL Orionis generating a bow shock (the bright arc) as it collides with material in the surrounding Orion Nebula...

Aphaenops michaeli Foures, 1954 Aphaenops ochsi L. Gaudin, 1925 Aphaenops orionis Fagniez, 1913 Aphaenops parallelus Coiffait, 1955 Aphaenops parvulus Faille...

L.; Edwin, R. P. (February 1991). "The eccentric-orbit binaries Iota Orionis and HR 1952: a cautionary tale". The Observatory. 111: 14–20. Bibcode:1991Obs...

318B. doi:10.1086/111748. Heintz, W. D. (May 1989). "The Orbits of MU Orionis and 9 Puppis". Publications of the Astronomical Society of the Pacific...

from its photosphere. CU Virginis, another rapidly rotating Bp star σ Orionis E, another rapidly spinning helium-rich star Anderson, E.; Francis, Ch...

LL Orionis bow shock in Orion Nebula. The star's wind collides with the nebula flow. Hubble, 1995...

spectroscopic observations of the supergiants 67 Ophiuchi, 55 Cygni and χ2 Orionis". Publ. Dominion Astrophys. Obs. 11: 353–361. Bibcode:1960PDAO...11..353U...

type by Burki et al. (1982) due to similarities to other stars such as 32 Orionis, Lambda Columbae, HW Velorum, and HD 186837, all of type B5V. They simultaneously...

equivalent to 0.2 parsecs, lies a fainter second object, RNO1B, a FU Orionis variable, correlated with another star of the same type, RNO1C, with which...

Leckrone, D. S.; Linsky, J. L.; Maran, S. P. (1995). "An Atlas of Alpha Orionis Obtained with the Goddard High Resolution Spectrograph on the Hubble Space...

cluster Auriga 6.4 Cr 68 NGC 1931 Open cluster Auriga 10.1 Cr 69 - Lambda Orionis Cluster Open cluster Orion 2.8 Cr 70 - Orion's Belt Open cluster Orion...

Netherlands and eventually becomes part of Belgium. March 28 – The nova V529 Orionis is discovered by Polish astronomer Johannes Hevelius (Jan Heweliusz). April...

Close Binaries: EP Andromedae, V724 Aquilae, SS Comae, AM Eridani, FZ Orionis, BY Pegasi, EQ Tauri, and NO Vulpeculae", The Publications of the Astronomical...

Intermediate-mass Stars. XXXVII. Uncovering a 0.53M⊙, 0.75 au Companion to h Orionis". Research Notes of the American Astronomical Society. 10 (5): 125. Bibcode:2026RNAAS...

preceding along the 'river' from east to west, starting from β (Supra pedem Orionis in flumine, prima, meaning above the foot of Orion in the river, the first)...

150 L/Teff TT Centauri 740 L/Teff Stephenson 2 DFK 10 730 L/Teff V1259 Orionis 730 L/Teff RSGC3-S15 730 ± 140 L/Teff VdBH 222#566 725 L/Teff May be larger...

by about 250 astronomical units (AU). The southeast component is an FU Orionis star (a type of pre-main-sequence star in a phase of very high mass accretion...

2001), "Constraints on Properties of the Protoplanetary Disks around UX Orionis and CQ Tauri", The Astrophysical Journal, 554 (2): 1087–1094, arXiv:astro-ph/0102473...

Netherlands and eventually becomes part of Belgium. March 28 – The nova V529 Orionis is discovered by Polish astronomer Johannes Hevelius (Jan Heweliusz). April...

existence is not proven, but is believed by some to exist. Planet Nine, FU Orionis Ab Protoplanet A large planetary embryo that originates within protoplanetary...

supposition that the source was associated with a young EX Lupi star or a FU Orionis star, whose main characteristic is precisely a sudden increase in luminosity...

Tomography of the Massive Compact Binary Stars in the Multiple Star Systems δ Orionis and HD 206267". The Publications of the Astronomical Society of the Pacific...

com/conversazione-nottoli/ Nottoli, G.; Costantini, G. (May 1998). Betel Orionis: a real time, multiprocessing sound synthesis system. Journées d'informatique...

(1997). "Abundance Analyses of the Field RV Tauri Variables: EP Lyrae, DY Orionis, AR Puppis, and R Sagittae". The Astrophysical Journal. 479 (1): 427–440...

contains several other variable stars, such as V1358 Orionis, RT Pictoris, DK Leonis, V909 Orionis and GJ 1284. The stars HD 30447 and HD 35847 are members...

The HH 1165 jet launched by the brown dwarf Mayrit 1701117 in the outer periphery of the sigma Orionis cluster...

study of mass loss from the mid-ultraviolet spectrum of α Cygni (A2 Ia), β Orionis (B8 Ia), and η Leonis (A0 Ib)". The Astrophysical Journal. 223: 207. Bibcode:1978ApJ...

Scorpiops novaki (Kovarik, 2005) Scorpiops oligotrichus Fage, 1933 Scorpiops orioni (Kovarik, Košulič, Stahlavsky, Dongkhamfu & Wongprom 2015) Scorpiops pachmarhicus...

A K0V 5.82 6.27 01h 39m 47.54s −56° 11′ 47.0″ 25.5 B K5V 5.95 6.40 π3 Orionis (Tabit) F6V 3.19 3.67 04h 49m 50.41s +06° 57′ 40.6″ 26.3 χ Draconis A F7V...