![]() Rigel is the lower right star in the rectangle of bright stars in Orion. |
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Observation data Epoch J2000.0 Equinox J2000.0 |
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Constellation | Orion |
Pronunciation | /ˈraɪdʒəl, -gəl/ |
Right ascension | 05 |
Declination | −08° 12′ 05.8981″ |
Apparent magnitude (V) | 0.12 |
Characteristics | |
Spectral type | B8 Iae: |
U−B color index | −0.66 |
B−V color index | −0.03 |
Variable type | Slightly irregular |
Astrometry | |
Radial velocity (Rv) | 20.7 km/s |
Proper motion (μ) | RA: +1.31 mas/yr |
Parallax (π) | 3.78 ± 0.34mas |
Distance | 860 ± 80 ly (260 ± 20 pc) |
Absolute magnitude (MV) | –7.84 ± 0.2 |
Details | |
Mass | 24 ± 3M☉ |
Radius | 71R☉ |
Luminosity (bolometric) | 96,456L☉ |
Surface gravity (log g) | 1.75 ± 0.10 |
Temperature | 12,130K |
Metallicity [Fe/H] | –0.06 ± 0.10dex |
Rotational velocity (v sin i) | 40 km/s |
Age | (8 ± 1) × 10 years |
Other designations | |
Rigel, Algebar, Elgebar, β Ori, 19 Ori, HD 34085, HR 1713, HIP 24436, SAO 131907, TD1 4253.
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Database references | |
SIMBAD | data |