Beta Leonis Minoris
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) |
|
|---|---|
| Constellation | Leo Minor |
| A | |
| Right ascension | 10h 27m 52.998s |
| Declination | +36° 42′ 25.95″ |
| Apparent magnitude (V) | 4.40; 4.215 (system) |
| B | |
| Right ascension | 10h 27m 53.006s |
| Declination | +36° 42′ 26.01″ |
| Apparent magnitude (V) | 6.12 |
| Characteristics | |
| U−B color index | +0.64 |
| B−V color index | +0.90 |
| V−R color index | 0.5 |
| R−I color index | +0.46 |
| A | |
| Spectral type | G8III-IV |
| B | |
| Spectral type | F8IV |
| Astrometry | |
| A | |
| Proper motion (μ) |
RA: −134.15 mas/yr Dec.: −113.57 mas/yr |
| Parallax (π) | 22.34 ± 0.87mas |
| Distance | 146 ± 6 ly (45 ± 2 pc) |
| Absolute magnitude (MV) | 0.96 |
| B | |
| Proper motion (μ) |
RA: −102.97 mas/yr Dec.: −95.00 mas/yr |
| Orbit | |
| Period (P) | 38.62 y |
| Semi-major axis (a) | 0.363″ |
| Eccentricity (e) | 0.668 |
| Inclination (i) | 79.1° |
| Longitude of the node (Ω) | 41.5° |
| Periastron epoch (T) | B1999.15 |
|
Argument of periastron (ω) (secondary) |
29.8° |
| Details | |
| A | |
| Mass | ~2 M☉ |
| Radius | 7.8 R☉ |
| Luminosity (bolometric) | 36 L☉ |
| Temperature | 5075 K |
| B | |
| Mass | 1.35 M☉ |
| Radius | 2 R☉ |
| Luminosity (bolometric) | 5.8 L☉ |
| Temperature | 6200 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
Coordinates: 
10h 27m 53s, +36° 42′ 26″
Beta Leonis Minoris (Beta LMi, β Leonis Minoris, β LMi) is a binary star in the constellation of Leo Minor. It has an overall apparent visual magnitude of approximately 4.215. Although it is the only star in Leo Minor with a Bayer designation, it is only the second brightest star in the constellation (the brightest is 46 Leonis Minoris).
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