Beta Leonis Minoris

β Leonis Minoris
Location of Beta Leonis Minoris (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Leo Minor
Right ascension 10h 27m 53.000s[1]
Declination +36° 42′ 25.96″[1]
Apparent magnitude (V) 4.21 (4.40/6.12)[2]
Characteristics
Spectral type G9III[3]
U−B color index +0.64[2]
B−V color index +0.90[2]
R−I color index +0.46[2]
A
Spectral type G8III-IV[2]
B
Spectral type F8IV[2]
Astrometry
Radial velocity (Rv)8.52[4] km/s
Proper motion (μ) RA: −127.68[1] mas/yr
Dec.: −110.31[1] mas/yr
Parallax (π)21.19 ± 0.50 mas[1]
Distance154 ± 4 ly
(47 ± 1 pc)
Absolute magnitude (MV)+0.85[4]
Orbit[5]
Period (P)13,965±40
Semi-major axis (a)0.3782″±0.0007″
Eccentricity (e)0.680±0.002
Inclination (i)81.4±0.1°
Periastron epoch (T)2451411.1±4.8 JD
Argument of periastron (ω)
(secondary)		215.7±0.2°
Semi-amplitude (K1)
(primary)		7.93±0.05 km/s
Semi-amplitude (K2)
(secondary)		12.32±0.18 km/s
Details
A
Mass2.98±0.10[5] M☉
Radius9.4±0.3[5] R☉
Luminosity (bolometric)50.7±1.8[5] L☉
Surface gravity (log g)2.85[4] cgs
Temperature4,097±927[5] K
Metallicity [Fe/H]+0.09[4] dex
Rotational velocity (v sin i)2.54[4] km/s
Age1.2[4] Gyr
B
Mass1.92±0.04[5] M☉
Radius3.7±1.5[5] R☉
Luminosity (bolometric)9.1±4.1[5] L☉
Temperature5,211±843[5] K
Other designations
Beta Leonis Minoris, Beta LMi, β LMi, Beta LMi, 31 Leonis Minoris, BD+37 2080, FK5 390, GC 14358, HD 90537, HIP 51233, HR 4100, SAO 62053, PPM 75233, ADS 7780, CCDM J10279+3642, WDS 10279+3642[2][6][7]
Database references
SIMBADdata

Beta Leonis Minoris, Latinized from β Leonis Minoris, is a binary star in the constellation of Leo Minor. It has an overall apparent visual magnitude of approximately 4.2. Although it is the only star in Leo Minor with a Bayer designation, it is only the second brightest star in the constellation (the brightest is 46 Leonis Minoris).[8]

  1. ^ a b c d e 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. S2CID 18759600.
  2. ^ a b c d e f g HR 4100, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line October 1, 2008.
  3. ^ Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins Catalog of Revised MK Types for the Cooler Stars". The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373. S2CID 123149047.
  4. ^ a b c d e f Deka-Szymankiewicz, B.; Niedzielski, A.; Adamczyk, M.; Adamów, M.; Nowak, G.; Wolszczan, A. (2018). "The Penn State - Toruń Centre for Astronomy Planet Search stars. IV. Dwarfs and the complete sample". Astronomy and Astrophysics. 615: A31. arXiv:1801.02899. Bibcode:2018A&A...615A..31D. doi:10.1051/0004-6361/201731696. S2CID 85526201.
  5. ^ a b c d e f g h i Cite error: The named reference Wang2020 was invoked but never defined (see the help page).
  6. ^ Entry 10279+3642, The Washington Double Star Catalog Archived 2008-04-13 at the Wayback Machine, United States Naval Observatory. Accessed on line October 1, 2008.
  7. ^ HD 90537 -- Spectroscopic binary, database entry, SIMBAD. Accessed on line October 1, 2008.
  8. ^ Cite error: The named reference kaler was invoked but never defined (see the help page).