Psi Aquilae

Observationsdata Epok: J2000.0
Psi Aquilae (ψ)

Stjärnbild	Örnen
Rektascension	19^t 42^m 34,19197^s^[1]
Deklination	+13° 18′ 10,0203″^[1]
Skenbar magnitud ( $V$ )	+6,25^[2]
Stjärntyp
Spektraltyp	B9 III-IV^[3]
U–B	-0,22^[4]
B–V	-0,04^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	-18,3^[5] km/s
Egenrörelse (µ)	RA: +2,17^[1] mas/år Dek.: -10,56^[1] mas/år
Parallax ( $\pi$ )	3,22 ± 0,41^[1]
Avstånd	ca 1 000 lå (ca 310 pc)
Absolut magnitud ( $M_{V}$ )	-1,17^[6]
Detaljer
Radie	3,7^[7] R_☉
Luminositet	341^[6] L_☉
Temperatur	10 814 ± 232^[8] K
Vinkelhastighet	20^[9] km/s
Andra beteckningar
ψ Aql, 48 Aquilae, BD+12° 4059, HD 186547, HIP 97139, HR 7511, SAO 105199.^[2]

Psi Aquilae (ψ Aqulilae, förkortat Psi Aql, ψ Aql) är en ensam stjärna belägen i den nordöstra delen av stjärnbilden Örnen. Den har en skenbar magnitud på 6,25^[2] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 3,2^[1] mas, beräknas den befinna sig på ett avstånd på ca 1 000 ljusår (ca 310 parsek) från solen.

Egenskaper

Psi Aquilae är en blå till vit jättestjärna av spektralklass B9 III-IV^[3], som anger att spektret till olika delar ligger i området mellan en underjätte och en jättestjärna. Den har en radie som är ca 3,7^[7] gånger större än solens och utsänder från dess fotosfär ca 340^[6] gånger mera energi än solen vid en effektiv temperatur av ca 10 800^[8] K.

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, tidigare version.

Noter

^ [a b c d e f] van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357.
^ [a b c] "psi Aql -- Star", SIMBAD, Centre de Données astronomiques de Strasbourg, hämtad 2012-07-21.
^ [a b] Cowley, A. (November 1972), "Spectral classification of the bright B8 stars", Astronomical Journal, 77: 750–755, Bibcode:1972AJ.....77..750C, doi:10.1086/111348.
^ [a b] Crawford, D. L. (February 1963), "U, b, v, and Hβ Photometry for the Bright B8- and B9-TYPE Stars", Astrophysical Journal, 137: 530, Bibcode:1963ApJ...137..530C, doi:10.1086/147526.
^ Evans, D. S. (June 20–24, 1966), Batten, Alan Henry; Heard, John Frederick, eds., The Revision of the General Catalogue of Radial Velocities, University of Toronto: International Astronomical Union, Bibcode:1967IAUS...30...57E.
^ [a b c] Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
^ [a b] Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367: 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
^ [a b] Paunzen, E.; Schnell, A.; Maitzen, H. M. (December 2005), "An empirical temperature calibration for the Δa photometric system. I. The B-type stars", Astronomy and Astrophysics, 444 (3): 941–946, arXiv:astro-ph/0509049, Bibcode:2005A&A...444..941P, doi:10.1051/0004-6361:20053546.
^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590.

Externa länkar

https://www.universeguide.com/star/psiaquilae

v • r Stjärnor i Örnen

Bayer	Altair (α) · Alshain (β) · Tarazed (γ) · Delta Aquilae (δ) · Epsilon Aquilae (ε) · Okab (ζ) · Eta Aquilae (η) · Tseen Foo (θ) · Al Thalimain (ι) · Kappa Aquilae (κ) · Lambda Aquilae (λ) · My Aquilae (μ) · Ny Aquilae (ν) · Xi Aquilae (ξ) · Omikron Aquilae (ο) · Pi Aquilae (π) · Sigma Aquilae (σ) · Tau Aquilae (τ) · Ypsilon Aquilae (υ) · Fi Aquilae (φ) · Chi Aquilae (χ) · Psi Aquilae (ψ) · Omega1 Aquilae (ω¹) · Omega2 Aquilae (ω²)

Flamsteed	4 Aquilae · 5 Aquilae · 7 Aquilae · 8 Aquilae · 10 Aquilae · 11 Aquilae · 12 Aquilae · 14 Aquilae · 15 Aquilae · 18 Aquilae · 19 Aquilae · 20 Aquilae · 21 Aquilae · 22 Aquilae · 23 Aquilae · 24 Aquilae · 26 Aquilae · 27 Aquilae · 28 Aquilae · 31 Aquilae · 35 Aquilae · 36 Aquilae · 37 Aquilae · 42 Aquilae · 45 Aquilae · 46 Aquilae · 51 Aquilae · 56 Aquilae · 57 Aquilae · 58 Aquilae · 62 Aquilae · 64 Aquilae · 66 Aquilae · 68 Aquilae · 69 Aquilae · 70 Aquilae · 71 Aquilae · 14 Sagittae · 62 Serpentis

Variabler	R Aquilae · S Aquilae · T Aquilae · U Aquilae · V Aquilae · W Aquilae · X Aquilae · Y Aquilae · Z Aquilae · CI Aquilae

HD	HD 179079 · HD 179791 · HD 180262 · HD 180555 · HD 183144 · HD 183263 · HD 185018 · HD 185966 · HD 187734 · HD 187923 · HD 188385 · HD 188405 · HD 190007 · HD 191104 · HD 191984 · HD 192699 · HD 194244

Övriga	CoRoT-2 · Gliese 752 · GRS 1915+105 · PSR B1913+16 · SS 433 · Van Biesbroecks stjärna · W43A · Wolf 1055

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