60 Leonis

This article is about b Leonis and is not to be confused with β Leonis.

60 Leonis is a star in the zodiac constellation of Leo, located 127 light years from the Sun. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 4.4.^[2] The star is moving closer to the Earth with a heliocentric radial velocity of −11 km/s.^[5]

60 Leonis

Observation data Epoch J2000      Equinox J2000
Constellation	Leo
Right ascension	11h 02m 19.77577s[1]
Declination	+20° 10′ 47.4265″[1]
Apparent magnitude (V)	4.398[2]
Characteristics
Spectral type	A1 Vm[3]
U−B color index	+0.05[4]
B−V color index	+0.07[4]
Astrometry
Radial velocity (Rv)	−11.10±0.7[5] km/s
Proper motion (μ)	RA: −8.67[1] mas/yr Dec.: 39.07[1] mas/yr
Parallax (π)	25.73±0.18 mas[1]
Distance	126.8 ± 0.9 ly (38.9 ± 0.3 pc)
Details[6]
Mass	2.11±0.06 M☉
Radius	1.80±0.07 R☉
Luminosity	24.1±1.4 L☉
Surface gravity (log g)	4.22±0.20 cgs
Temperature	9,540±180 K
Metallicity [Fe/H]	0.00±0.10 dex
Rotational velocity (v sin i)	17.2±2.0[7] km/s
Age	195±15 Myr
Other designations
b Leo, 60 Leo, NSV 18592, AAVSO 1057+20, BD+20°2547, FK5 2880, HD 95608, HIP 53954, HR 4300, SAO 81637[8]
Database references
SIMBAD	data

This is an Am star^[9] with a stellar classification of A1 Vm,^[3] although LeBlanc et al. (2015) consider it an Ap star.^[7] The atmosphere displays clear indications of stratification of iron with no significant magnetic field detected.^[7] It is 195 million years old with a relatively low projected rotational velocity of 17 km/s.^[7] The star has 2.11 times the mass of the Sun and 1.80 times the Sun's radius. It is radiating 24.1 times the Sun's luminosity from its photosphere at an effective temperature of 9,540 K.^[6]