15 Leonis Minoris
Star in the constellation Ursa Major
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15 Leonis Minoris is the Flamsteed designation for a single[13] star in the northern circumpolar constellation of Ursa Major. It has an apparent visual magnitude of 5.08,[1] 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.[14]
 | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ursa Major[1] |
| Right ascension | 09h 48m 35.37135s[2] |
| Declination | +46° 01â² 15.6266â³[2] |
| Apparent magnitude (V) | 5.08[1] |
| Characteristics | |
| Evolutionary stage | subgiant[2] |
| Spectral type | G0 IV-V[3] |
| UâB color index | +0.175[4] |
| BâV color index | 0.619±0.007[1] |
| Astrometry | |
| Radial velocity (Rv) | 5.20±0.09[5] km/s |
| Proper motion (μ) | RA: +221.750[2] mas/yr Dec.: â92.356[2] mas/yr |
| Parallax (Ï) | 53.1277±0.0773 mas[2] |
| Distance | 61.39 ± 0.09 ly (18.82 ± 0.03 pc) |
| Absolute magnitude (MV) | 3.75[6] |
| Details | |
| Mass | 1.15[7] Mâ |
| Radius | 1.62[8] Râ |
| Luminosity | 2.80[8] Lâ |
| Habitable zone inner limit | 1.25[9] AU |
| Habitable zone outer limit | 2.93[9] AU |
| Surface gravity (log g) | 4.04[3] cgs |
| Temperature | 5,859[3] K |
| Metallicity [Fe/H] | 0.01[3] dex |
| Rotational velocity (v sin i) | 3.97[10] km/s |
| Age | 9.3[11] Gyr |
| Other designations | |
| 15 LMi, BD+46°1551, FK5 1255, GJ 368, HD 84737, HIP 48113, HR 3881, SAO 43046[12] | |
| Database references | |
| SIMBAD | data |
This star has a stellar classification of G0 IV-V[3] with an age of about 9.3 billion years,[11] 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,[7] and it is larger in girth than the Sun by +52%.[15] It is spinning with a projected rotational velocity of 4 km/s.[10] The star is radiating nearly three times the luminosity of the Sun from its photosphere[8] at an effective temperature of 5,859 K,[3] 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.[9]