![]() ![]() Algieba (circled) is the γ star in the lion's mane |
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Observation data Epoch J2000 Equinox J2000 |
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Constellation | Leo |
Right ascension | 10 |
Declination | +19° 50′ 29.3468″ |
Apparent magnitude (V) | 1.98 (2.28/3.51) |
Characteristics | |
Spectral type | K0 IIIb + G7 IIICN... |
U−B color index | 1.00 |
B−V color index | 1.14 |
Astrometry | |
Radial velocity (Rv) | –36.24 ± 0.18 km/s |
Proper motion (μ) | RA: +304.30 mas/yr |
Parallax (π) | 25.07 ± 0.52mas |
Distance | 130 ± 3 ly (39.9 ± 0.8 pc) |
Absolute magnitude (MV) | –0.27/+0.98 |
Orbit | |
Period (P) | 510.3 yr |
Semimajor axis (a) | 4.24" |
Eccentricity (e) | 0.845 |
Inclination (i) | 76.0° |
Longitude of the node (Ω) | 143.4° |
Periastron epoch (T) | 1671.3 |
Details | |
γ Leo A | |
Mass | 1.23M☉ |
Radius | 31.88R☉ |
Luminosity | 320L☉ |
Surface gravity (log g) | 2.35 |
Temperature | 4,470K |
Metallicity [Fe/H] | –0.49 ± 0.12dex |
γ Leo B | |
Radius | 10 R☉ |
Luminosity | 40 L☉ |
Surface gravity (log g) | 2.98 |
Temperature | 4,980K |
Metallicity [Fe/H] | –0.52 ± 0.11dex |
Other designations | |
Algeiba, 41 Leo, BD +20°2467, GCTP 2423.00, HIP 50583, LTT 12764/12765, WDS 10200+1950.
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γ Leo A: HD 89484, HR 4057, SAO 81298 | |
γ Leo B: HD 89485, HR 4058, SAO 81299 | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
Extrasolar Planets Encyclopaedia |
data |