37 Leonis Minoris

37 Leonis Minoris
Observation data; Epoch J2000 Equinox J2000
Constellation	Leo Minor
Right ascension	10h 38m 43.21s
Declination	31° 58′ 34.4″
Apparent magnitude (V)	4.68
Characteristics
Spectral type	G2.5 IIa
B−V color index	0.823±0.008
Astrometry
Radial velocity (Rv)	−8.0±0.3 km/s
Proper motion (μ)	RA: +9.76 mas/yr ; Dec.: −35.56 mas/yr
Parallax (π)	5.58 ± 0.24 mas
Distance	580 ± 30 ly ; (179 ± 8 pc)
Absolute magnitude (MV)	−1.84
Details
Mass	3.72 M☉
Radius	31 R☉
Luminosity	438.33 L☉
Surface gravity (log g)	2.22 cgs
Temperature	5,468 K
Metallicity [Fe/H]	0.03 dex
Rotational velocity (v sin i)	6.4 km/s
Age	200 Myr
Other designations
	37 LMi, BD+32° 2061, FK5 1275, HD 92125, HIP 52098, HR 4166, SAO 62173
Database references
SIMBAD	data

37 Leonis Minoris is a single,^[9] yellow-hued star in the northern constellation of Leo Minor. It is faintly visible to the naked eye with an apparent visual magnitude of 4.68.^[2] The star is moving closer to the Sun with a heliocentric radial velocity of −8 km/s.^[2] The annual parallax shift of 5.58±0.24 mas^[1] provides a distance estimate of roughly 580 light years.

The Bright Star Catalogue lists this star with a stellar classification of G2.5 IIa,^[3] indicating it is an evolved G-type bright giant. Gray et al. (2001) gave it a class of G1 II,^[10] while Keenan and McNeil (1989) assigned this star to the giant class G2.5 IIIa.^[11] It has an estimated 3.72^[5] times the mass of the Sun and about 31^[6] times the Sun's radius. The star is around 200^[7] million years old with a projected rotational velocity of 6.4 km/s.^[7] It is radiating about 438^[2] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,468 K.^[5]

References

^ ^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, S2CID 18759600.
^ ^a ^b ^c ^d ^e ^f ^g 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, S2CID 119257644.
^ ^a ^b Warren, W. H. Jr.; Hoffleit, D. (March 1987), "The Bright Star Catalogue", Bulletin of the American Astronomical Society, 19 (5th revised ed.): 733, Bibcode:1987BAAS...19..733W.
^ Kovtyukh, V. V.; Chekhonadskikh, F. A.; Luck, R. E.; Soubiran, C.; Yasinskaya, M. P.; Belik, S. I. (2010), "Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios", Monthly Notices of the Royal Astronomical Society, 408 (3): 1568–75, Bibcode:2010MNRAS.408.1568K, doi:10.1111/j.1365-2966.2010.17217.x.
^ ^a ^b ^c ^d ^e ^f Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal, 785 (2): 12, arXiv:1404.1687, Bibcode:2014ApJ...785...94L, doi:10.1088/0004-637X/785/2/94, S2CID 119226316, 94.
^ ^a ^b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367: 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
^ ^a ^b ^c ^d Takeda, Yoichi; Tajitsu, Akito (2014), "Spectroscopic study on the beryllium abundances of red giant stars", Publications of the Astronomical Society of Japan, 66 (5): 91, arXiv:1406.7066, Bibcode:2014PASJ...66...91T, doi:10.1093/pasj/psu066.
^ "37 LMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-03-01.
^ 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, S2CID 14878976.
^ Gray, R. O.; et al. (April 2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal, 121 (4): 2148–2158, Bibcode:2001AJ....121.2148G, doi:10.1086/319956.
^ Keenan, P.; McNeil, R. (October 1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245–266, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.

[vanLeeuwen2007-1] ^ ^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, S2CID 18759600.

[Anderson2012-2] ^ ^a ^b ^c ^d ^e ^f ^g 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, S2CID 119257644.

[Hoffleit1987-3] Warren, W. H. Jr.; Hoffleit, D. (March 1987), "The Bright Star Catalogue", Bulletin of the American Astronomical Society, 19 (5th revised ed.): 733, Bibcode:1987BAAS...19..733W.

[Kovtyukh2010-4] Kovtyukh, V. V.; Chekhonadskikh, F. A.; Luck, R. E.; Soubiran, C.; Yasinskaya, M. P.; Belik, S. I. (2010), "Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios", Monthly Notices of the Royal Astronomical Society, 408 (3): 1568–75, Bibcode:2010MNRAS.408.1568K, doi:10.1111/j.1365-2966.2010.17217.x.

[Liu2014-5] ^ ^a ^b ^c ^d ^e ^f Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal, 785 (2): 12, arXiv:1404.1687, Bibcode:2014ApJ...785...94L, doi:10.1088/0004-637X/785/2/94, S2CID 119226316, 94.

[Fracassini2001-6] Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367: 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.

[takeda14-7] Takeda, Yoichi; Tajitsu, Akito (2014), "Spectroscopic study on the beryllium abundances of red giant stars", Publications of the Astronomical Society of Japan, 66 (5): 91, arXiv:1406.7066, Bibcode:2014PASJ...66...91T, doi:10.1093/pasj/psu066.

[SIMBAD-8] "37 LMi". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-03-01.

[Eggleton2008-9] 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, S2CID 14878976.

[Gray2001-10] Gray, R. O.; et al. (April 2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal, 121 (4): 2148–2158, Bibcode:2001AJ....121.2148G, doi:10.1086/319956.

[Keenan1989-11] Keenan, P.; McNeil, R. (October 1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245–266, Bibcode:1989ApJS...71..245K, doi:10.1086/191373.

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37 Leonis Minoris

References

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