30 Leonis Minoris is a single[11] star in the northern constellation of Leo Minor. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.72.[2] The distance to this star, as estimated from parallax measurements, is 233 light years.[1] It is drifting away from the Earth with a heliocentric radial velocity of +13.7 km/s.[6]

30 Leonis Minoris

Location of 30 Leonis Minoris (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Leo Minor
Right ascension	10h 25m 54.81535s[1]
Declination	33° 47′ 46.0309″[1]
Apparent magnitude (V)	4.72[2]
Characteristics
Spectral type	kF0hF2mF2[3] or A9IIIa[4]
U−B color index	+0.18[5]
B−V color index	+0.25[5]
Astrometry
Radial velocity (Rv)	+13.70[6] km/s
Proper motion (μ)	RA: -73.66[1] mas/yr Dec.: -59.21[1] mas/yr
Parallax (π)	13.98 ± 0.21 mas[1]
Distance	233 ± 4 ly (72 ± 1 pc)
Absolute magnitude (MV)	0.45[2]
Details
Mass	2.28[7] M☉
Radius	4.182[8] R☉
Luminosity	58[7] L☉
Surface gravity (log g)	3.82[9] cgs
Temperature	7,292[9] K
Metallicity [Fe/H]	+0.19[9] dex
Rotational velocity (v sin i)	34[7] km/s
Other designations
30 LMi, BD+34°2128, GC 14315, HD 90277, HIP 51056, HR 4090, SAO 62038[10]
Database references
SIMBAD	data

This object has been catalogued as an Am star[12] and was given a stellar classification of kF0hF2mF2[3] by Abt and Morrell (1995). This notation indicates the calcium K line matches an F0 star, while the hydrogen and metal lines fit an F2 star. However, Gray et al. (2001) assigned it a class of A9IIIa,[4] matching an A-type giant star.

30 Leonis Minoris has 2.3[7] times the mass of the Sun and 4.2[8] times the Sun's radius. It has a moderate rate of spin, showing a projected rotational velocity of 34 km/s.[7] The star is radiating 58[7] times the Sun's luminosity from its photosphere at an effective temperature of 7,292 K.[9]

References