37 Leonis Minoris
Star in the constellation Leo Minor
From Wikipedia, the free encyclopedia
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.[1] The star is moving closer to the Sun with a heliocentric radial velocity of −8 km/s.[1] The annual parallax shift of 5.58±0.24 mas[2] provides a distance estimate of roughly 580 light years.
 | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo Minor[1] |
| Right ascension | 10h 38m 43.21s[2] |
| Declination | +31° 58′ 34.4″[2] |
| Apparent magnitude (V) | 4.68[1] |
| Characteristics | |
| Spectral type | G2.5 IIa[3] |
| B−V color index | 0.823±0.008[1] |
| Astrometry | |
| Radial velocity (Rv) | −8.0±0.3[1] km/s |
| Proper motion (μ) | RA: +9.76[2] mas/yr Dec.: −35.56[2] mas/yr |
| Parallax (π) | 5.58±0.24 mas[2] |
| Distance | 580 ± 30 ly (179 ± 8 pc) |
| Absolute magnitude (MV) | −1.84[4] |
| Details | |
| Mass | 3.72[5] M☉ |
| Radius | 24[6] R☉ |
| Luminosity | 438[1] L☉ |
| Surface gravity (log g) | 2.22[5] cgs |
| Temperature | 5,468[5] K |
| Metallicity [Fe/H] | 0.03[5] dex |
| Rotational velocity (v sin i) | 6.4[7] km/s |
| Age | 200[7] Myr |
| Other designations | |
| 37 LMi, BD+32°2061, FK5 1275, HD 92125, HIP 52098, HR 4166, SAO 62173[8] | |
| Database references | |
| SIMBAD | data |
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 times the mass of the Sun[5] and about 24 times the Sun's radius.[6] The star is around 200 million years old with a projected rotational velocity of 6.4 km/s.[7] It is radiating about 438 times the Sun's luminosity[1] from its enlarged photosphere at an effective temperature of 5,468 K.[5]