37 Leonis Minoris

37 Leonis Minoris
Observation data
Epoch J2000      Equinox J2000
Constellation Leo Minor
Right ascension 11h 01m 49.67462s[1]
Declination −02° 29′ 04.5007″[1]
Apparent magnitude (V) 4.68[2]
Characteristics
Spectral type G2.5 IIa[3]
B−V color index 0.823±0.008[2]
Astrometry
Radial velocity (Rv)−8.0±0.3[2] km/s
Proper motion (μ) RA: +9.76[1] mas/yr
Dec.: −35.56[1] mas/yr
Parallax (π)5.58 ± 0.24 mas[1]
Distance580 ± 30 ly
(179 ± 8 pc)
Absolute magnitude (MV)−1.84[4]
Details
Mass3.72[5] M☉
Radius31[6] R☉
Luminosity438.33[2] L☉
Surface gravity (log g)2.22[5] cgs
Temperature5,468[5] K
Metallicity [Fe/H]0.03[5] dex
Rotational velocity (v sin i)6.4[7] km/s
Age200[7] Myr
Other designations
37 LMi, BD+32° 2061, FK5 1275, HD 92125, HIP 52098, HR 4166, SAO 62173[8]
Database references
SIMBADdata

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]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Hoffleit1987 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Kovtyukh2010 was invoked but never defined (see the help page).
  5. ^ a b c d e f Cite error: The named reference Liu2014 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Fracassini2001 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference takeda14 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Gray2001 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).