Praecipua

Praecipua
Sterrebeeld	Klein Leeu
Spektraaltipe	K0+ III-IV[1]
Waarnemingsdata (Epog J2000)
Regte klimming	10h 53m 18.70487s[2]
Deklinasie	+34° 12′ 53.5375″[2]
Skynmagnitude (m)	3,83[3] (3,79-3,84[4])
Absolute magnitude (M)	1,45[5]
Besonderhede
Massa (M☉)	1,69[6]
Radius (R☉)	8,22 ± 0,22[3]
Ligsterkte (L☉)	34 ± 2[3]
Ouderdom (jaar)	6,76 miljard[7]
Temperatuur (K)	4 670[3]
Afstand (ligjaar)	95
Rotasiespoed (km/s)	1,81[8]
Metaalinhoud [Fe/H]	-0.2[9]
Eienskappe
Veranderlikheid	Vermoedelik
Ander name
BD+34 2172, FK5 412, HD 94264, HIP 53229, HR 4247, SAO 62297
Portaal    Sterrekunde

Praecipua (ook bekend as 46 Leonis Minoris of 46 LMi) is die helderste ster in die sterrebeeld Klein Leeu (Leo Minor). Sy sterreklassifikasie is K0+III-IV, wat aandui dit is ’n rooireus of subreus, en dit het ’n skynbare magnitude van 3,83. Dit is sowat 95 ligjare van die Son af. Dit is vermoedelik ’n veranderlike ster met ’n wisseling van omtrent 0,05 magnitudes.^[4]

1. ↑ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
2. ↑ ^{2,0 2,1} Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa474_2_653
3. ↑ ^{3,0 3,1 3,2 3,3} Verwysingfout: Invalid <ref> tag; no text was provided for refs named aaa526_A100
4. ↑ ^{4,0 4,1} Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013)". VizieR On-line Data Catalog: B/gcvs. Oorpronklik gepubliseer in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
5. ↑ Mullan, D. J.; MacDonald, J. (2003). "Onset of Mass Loss in Red Giants: Association with an Evolutionary Event". The Astrophysical Journal. 591 (2): 1203. Bibcode:2003ApJ...591.1203M. doi:10.1086/375446.
6. ↑ Lyubimkov, L. S.; Poklad, D. B. (2014). "Determining the effective temperatures of G- and K-type giants and supergiants based on observed photometric indices". Kinematics and Physics of Celestial Bodies. 30 (5): 244. arXiv:1412.6950. Bibcode:2014KPCB...30..244L. doi:10.3103/S0884591314050055.
7. ↑ Soubiran, C.; Bienaymé, O.; Mishenina, T. V.; Kovtyukh, V. V. (2008). "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants". Astronomy and Astrophysics. 480: 91. arXiv:0712.1370. Bibcode:2008A&A...480...91S. doi:10.1051/0004-6361:20078788.
8. ↑ Hekker, S.; Meléndez, J. (2007). "Precise radial velocities of giant stars. III. Spectroscopic stellar parameters". Astronomy and Astrophysics. 475 (3): 1003. arXiv:0709.1145. Bibcode:2007A&A...475.1003H. doi:10.1051/0004-6361:20078233.
9. ↑ Wittenmyer, Robert A.; Gao, Dongyang; Hu, Shao Ming; Villaver, Eva; Endl, Michael; Wright, Duncan (2015). "The Weihai Observatory Search for Close-in Planets Orbiting Giant Stars". Publications of the Astronomical Society of the Pacific. 127 (956): 1021. arXiv:1507.06051. Bibcode:2015PASP..127.1021W. doi:10.1086/683258.