15 Leonis Minoris

15 Leonis Minoris is the Flamsteed designation for a single^[14] star in the northern circumpolar constellation of Ursa Major. It has an apparent visual magnitude of 5.08,^[3] making it a fifth magnitude star that is visible to the naked eye. Based on parallax measurements, it is located at a distance of 61.7 light years from the Sun. The star has been examined for an infrared excess, but none was detected.^[15]

15 Leonis Minoris

Location of 15 Leo Minoris (circled)
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Ursa Major[1]
Right ascension	09h 48m 35.37130s[2]
Declination	+46° 01′ 15.6338″[2]
Apparent magnitude (V)	5.08[3]
Characteristics
Spectral type	G0 IV-V[4]
U−B color index	+0.175[5]
B−V color index	0.619±0.007[3]
Astrometry
Radial velocity (Rv)	5.20±0.09[6] km/s
Proper motion (μ)	RA: 221.788[2] mas/yr Dec.: −92.816[2] mas/yr
Parallax (π)	52.8994±0.1260 mas[2]
Distance	61.7 ± 0.1 ly (18.90 ± 0.05 pc)
Absolute magnitude (MV)	3.75[7]
Details
Mass	1.15[8] M☉
Radius	1.52[9] R☉
Luminosity	2.912±0.010[2] L☉
Habitable zone inner limit	1.25[10] AU
Habitable zone outer limit	2.93[10] AU
Surface gravity (log g)	4.04[4] cgs
Temperature	5,859[4] K
Metallicity [Fe/H]	0.01[4] dex
Rotational velocity (v sin i)	3.97[11] km/s
Age	9.3[12] Gyr
Other designations
15 LMi, BD+46°1551, FK5 1255, GJ 368, HD 84737, HIP 48113, HR 3881, SAO 43046[13]
Database references
SIMBAD	data

This star has a stellar classification of G0 IV-V^[4] with an age of about 9.3 billion years,^[12] which suggests that it is an older G-type main sequence star that may be evolving into a subgiant as the hydrogen at its core runs out. The estimated mass of the star is 15% greater than the Sun's mass,^[8] and it is larger in girth than the Sun by +52%.^[9] It is spinning with a projected rotational velocity of 4 km/s.^[11] The star is radiating almost three^[2] times the luminosity of the Sun from its photosphere at an effective temperature of 5,859 K,^[4] giving it the yellow-hued glow of a G-type star.^[16]

15 Leonis Minoris presents a significantly difference on proper motion measurements taken by the Hipparcos and Gaia spacecrafts, suggesting it may have an orbiting giant planet.^[10]