28 Leonis Minoris (28 LMi) is a solitary,[10] orange hued star located in the northern constellation Leo Minor, the lesser lion. It has an apparent magnitude of 5.5,[2] allowing it to be faintly visible to the naked eye. Based on parallax measurements from the Gaia satellite, it is estimated to be 480 light years distant.[1] 28 LMi is approaching the Solar System with a heliocentric radial velocity of −24 km/s.[5] At its current distance, the star brightness is diminished by 0.14 magnitudes due to interstellar dust.[11]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Leo Minor |
| Right ascension | 10h 24m 08.60391s[1] |
| Declination | +33° 43′ 06.7069″[1] |
| Apparent magnitude (V) | 5.50±0.01[2] |
| Characteristics | |
| Spectral type | K1 III[3] |
| B−V color index | +1.18[4] |
| Astrometry | |
| Radial velocity (Rv) | −24.3±0.2[5] km/s |
| Proper motion (μ) | RA: −14.460 mas/yr Dec.: −2.770 mas/yr |
| Parallax (π) | 6.7945 ± 0.091 mas[1] |
| Distance | 480 ± 6 ly (147 ± 2 pc) |
| Absolute magnitude (MV) | −0.05[6] |
| Details | |
| Mass | 1.19[7] M☉ |
| Radius | 22.6[1] R☉ |
| Luminosity | 207[1] L☉ |
| Surface gravity (log g) | 1.80[7] cgs |
| Temperature | 4,580±122[8] K |
| Metallicity [Fe/H] | −0.04[1] dex |
| Age | 202[1] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is a population II[12] giant star with a stellar classification of K1 III.[3] It has a comparable mass to the Sun[7] but has expanded to 22.6 times its girth.[1] It radiates 207 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 4,580 K.[8] It has an iron abundance 90% of the Sun's, making it slightly metal deficient.[1]