15 Leonis Minoris
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 09h 48m 35.37135s |
| Declination | +46° 01′ 15.6266″ |
| Apparent magnitude (V) | 5.08 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | G0 IV-V |
| U−B color index | +0.175 |
| B−V color index | 0.619±0.007 |
| Astrometry | |
| Radial velocity (Rv) | 5.20±0.09 km/s |
| Proper motion (μ) | RA: +221.750 mas/yr Dec.: −92.356 mas/yr |
| Parallax (π) | 53.1277±0.0773 mas |
| Distance | 61.39 ± 0.09 ly (18.82 ± 0.03 pc) |
| Absolute magnitude (MV) | 3.75 |
| Details | |
| Mass | 1.15 M☉ |
| Radius | 1.62 R☉ |
| Luminosity | 2.80 L☉ |
| Habitable zone inner limit | 1.25 AU |
| Habitable zone outer limit | 2.93 AU |
| Surface gravity (log g) | 4.04 cgs |
| Temperature | 5,859 K |
| Metallicity [Fe/H] | 0.01 dex |
| Rotational velocity (v sin i) | 3.97 km/s |
| Age | 9.3 Gyr |
| Other designations | |
| 15 LMi, BD+46°1551, FK5 1255, GJ 368, HD 84737, HIP 48113, HR 3881, SAO 43046 | |
| Database references | |
| SIMBAD | data |
15 Leonis Minoris is the Flamsteed designation for a single star in the northern circumpolar constellation of Ursa Major. It has an apparent visual magnitude of 5.08, 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.
This star has a stellar classification of G0 IV-V with an age of about 9.3 billion years, 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, and it is larger in girth than the Sun by +52%. It is spinning with a projected rotational velocity of 4 km/s. The star is radiating nearly three times the luminosity of the Sun from its photosphere at an effective temperature of 5,859 K, giving it the yellow-hued glow of a G-type star.
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.