Kappa Gruis

Observationsdata Epok: J2000.0
Kappa Gruis (κ)

Stjärnbild	Tranan
Rektascension	23^t 04^m 39,62808^s^[1]
Deklination	-53° 57′ 53,6576″^[1]
Skenbar magnitud ( $V$ )	+5,37^[2]
Stjärntyp
Spektraltyp	K5 III^[3]
B–V	+1,45^[2]
Astrometri
Radialhastighet ( $R_{v}$ )	+17,7 ± 0,8^[4] km/s
Egenrörelse (µ)	RA: +57,74^[1] mas/år Dek.: -106,10^[1] mas/år
Parallax ( $\pi$ )	8,96 ± 0,37^[1]
Avstånd	360 ± 20 lå (112 ± 5 pc)
Absolut magnitud ( $M_{V}$ )	-1,04^[5]
Detaljer
Radie	12,37^[6] R_☉
Luminositet	525^[5] L_☉
Temperatur	4 076^[6] K
Andra beteckningar
κ Kru, CPD-54° 10197, FK5 3845, HD 217902, HIP 113957, HR 8774, SAO 247711 ^[7]

Kappa Gruis (κ Gruis, förkortat Kappa Gru, κ Gru) som är stjärnans Bayerbeteckning, är en ensam stjärna^[8] belägen i den södra delen av stjärnbilden Tranan. Den har en skenbar magnitud på 5,37^[2] och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 9,0^[1] mas, beräknas den befinna sig på ett avstånd på ca 360 ljusår (ca 112 parsek) från solen.

Egenskaper

Kappa Gruis är en orange till röd jättestjärna av spektralklass K5 III^[3] och befinner sig på den asymptotiska jättegrenen. Den har en radie som är ca 12,4^[6] gånger större än solens och utsänder från dess fotosfär ca 525^[5] gånger mera energi än solen vid en effektiv temperatur av ca 4 100^[6] K.

Kappa Gruis ingår i stjärnströmmen Arcturus Moving Group.^[5]

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] Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
^ [a b] Houk, Nancy; Cowley, A. P. (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 1, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
^ Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
^ [a b c d] Eggen, Olin J.; Iben, Icko, Jr. (April 1991), "First giant branch and asymptotic giant branch stars in nearby aggregates", Astronomical Journal, 101: 1377–1407, Bibcode:1991AJ....101.1377E, doi:10.1086/115773.
^ [a b c d] https://www.universeguide.com/star/kappagruis Arkiverad 6 oktober 2018 hämtat från the Wayback Machine.. Hämtad 2018-10-06.
^ "* kap Gru". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 2017-06-26.
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x.

Externa länkar

https://web.archive.org/web/20181006154938/https://www.universeguide.com/star/kappagruis

v • r Stjärnor i Tranan

Bayer	Alnair (α) · Tiaki(β) · Aldhanab (γ) · Delta1 Gruis (δ) · Delta2 Gruis (δ) · Epsilon Gruis (ε) · Zeta Gruis (ζ) · Eta Gruis (η) · Theta Gruis (θ) · Jota Gruis (ι) · Kappa Gruis (κ) · Lambda Gruis (λ) · My1 Gruis (μ) · My2 Gruis (μ) · Ny Gruis (ν) · Xi Gruis (ξ) · Omikron Gruis (ο) · Pi1 Gruis (π1) · Pi2 Gruis (π2) · Rho Gruis (ρ) · Sigma1 Gruis (σ1) · Sigma2 Gruis (σ2) · Tau1 Gruis (τ1) · Tau2 Gruis (τ2) · Tau3 Gruis (τ3) · Ypsilon Gruis (υ) · Fi Gruis (φ)

Variabler	R Gruis · S Gruis · T Gruis · U Gruis · V Gruis · W Gruis · X Gruis · Y Gruis · Z Gruis · RZ Gruis · CE Gruis

HD	HD 207129 · HD 208487 · HD 211415 · HD 213240 · HD 215456

Övriga	2MASS J22282889–4310262 · Gliese 832 · GJ 4248 · PSR J2144-3933 · S5-HVS1 · WASP-95 · WISE 2220-3628

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