10 Leonis Minoris
Star in the constellation Leo Minor
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10 Leonis Minoris is a single[13] variable star in the northern constellation Leo Minor, located approximately 191 light years away based on parallax. It has the variable star designation SU Leonis Minoris; 10 Leonis Minoris is the Flamsteed designation. This body is visible to the naked eye as a faint, orange-hued star with a baseline apparent visual magnitude of 4.54.[2] It is moving closer to the Earth with a heliocentric radial velocity of â12 km/s.[7]
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Leo Minor |
| Right ascension | 09h 34m 13.38184s[1] |
| Declination | +36° 23â² 51.2090â³[1] |
| Apparent magnitude (V) | 4.54[2] |
| Characteristics | |
| Evolutionary stage | horizontal branch[3] |
| Spectral type | G8.5 III[4] |
| UâB color index | +0.61[5] |
| BâV color index | +0.92[5] |
| Variable type | RS CVn[6] |
| Astrometry | |
| Radial velocity (Rv) | â11.94[7] km/s |
| Proper motion (μ) | RA: +6.989[1] mas/yr Dec.: â22.729[1] mas/yr |
| Parallax (Ï) | 17.0738±0.1341 mas[1] |
| Distance | 191 ± 2 ly (58.6 ± 0.5 pc) |
| Absolute magnitude (MV) | 0.83[8] |
| Details | |
| Mass | 2.12[3] Mâ |
| Radius | 8.74±0.29[9] Râ |
| Luminosity | 46.44±1.65[9] Lâ |
| Surface gravity (log g) | 2.93[10] cgs |
| Temperature | 5,075[3] K |
| Metallicity [Fe/H] | â0.04[10] dex |
| Rotational velocity (v sin i) | 4.7[11] km/s |
| Age | 557[1] Myr |
| Other designations | |
| 10 LMi, SU Leonis Minoris, BD+37°2004, FK5 360, GC 13203, HD 82635, HIP 46952, HR 3800, SAO 61570[12] | |
| Database references | |
| SIMBAD | data |
This is an evolved giant star with a stellar classification of G8.5 III.[4] It is reported as a RS CVn variable with magnitude varying by 0.02 mag.[6] and showing a high level of chromospheric activity.[15] The star has around 2.1 times the mass of the Sun and has expanded to 8.7 times the Sun's radius. It is radiating 46 times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 5,075 K.[3][9]