46 Leonis Minoris

46 Leonis Minoris
Location of 46 Leonis Minoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Leo Minor
Right ascension 10h 53m 18.70487s[1]
Declination +34° 12′ 53.5375″[1]
Apparent magnitude (V) 3.83[2] (3.79–3.84[3])
Characteristics
Evolutionary stage red clump[4]
Spectral type K0+ III-IV[5]
Variable type suspected[3]
Astrometry
Proper motion (μ) RA: +90.625 mas/yr[6]
Dec.: −278.64 mas/yr[6]
Parallax (π)32.921 ± 0.1775 mas[6]
Distance99.1 ± 0.5 ly
(30.4 ± 0.2 pc)
Absolute magnitude (MV)+1.45[7]
Details[8]
Mass1.09±0.04 M☉
Radius8.21±0.06[9] R☉
Luminosity27.42±1.38 L☉
Surface gravity (log g)2.674±0.013 cgs
Temperature4,670[2] K
Metallicity [Fe/H]−0.1 dex
Rotational velocity (v sin i)1.81[10] km/s
Age8.2±1.9 Gyr
Other designations
Praecipua, 46 LMi, BD+34 2172, FK5 412, HD 94264, HIP 53229, HR 4247, SAO 62297
Database references
SIMBADdata

46 Leonis Minoris (abbreviated 46 LMi), also named Praecipua /prɪˈsɪpjʊə/,[11] is the brightest star in the constellation of Leo Minor. It is of spectral class K0+III-IV and of magnitude 3.83. It is a red clump giant.[4] Based upon parallax measurements, its distance from the Sun is approximately 99.1 light-years.[6] It is a suspected variable with an amplitude of about 0.05 magnitudes.[3]

  1. ^ a b Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference aaa526_A100 was invoked but never defined (see the help page).
  3. ^ a b c 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. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  4. ^ a b 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 (1): 91–101. arXiv:0712.1370. Bibcode:2008A&A...480...91S. doi:10.1051/0004-6361:20078788. S2CID 16602121.
  5. ^ 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.
  6. ^ a b c Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  7. ^ 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.
  8. ^ Cite error: The named reference frandsen was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Baines2018 was invoked but never defined (see the help page).
  10. ^ 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. S2CID 10436552.
  11. ^ "Naming Stars". IAU.org. Retrieved 16 December 2017.