Observation data Epoch J2000 Equinox J2000 |
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Constellation | Canis Major |
Right ascension | 06h 58m 37.6s |
Declination | –28° 58′ 19″ |
Apparent magnitude (V) | 1.50 |
Characteristics | |
Spectral type | B2 II |
U−B color index | –0.93 |
B−V color index | –0.13 |
Astrometry | |
Radial velocity (Rv) | +27.3 km/s |
Proper motion (μ) | RA: +2.63 mas/yr |
Parallax (π) | 7.57 ± 0.57mas |
Distance | 430 ± 30 ly (132 ± 10 pc) |
Absolute magnitude (MV) | –4.11 |
Details | |
Mass | 12.6 ± 1.0M☉ |
Radius | 13.9R☉ |
Luminosity | 38,700L☉ |
Surface gravity (log g) | 3.31 |
Temperature | 22,200K |
Age | 22.5 ± 2.6Myr |
Other designations | |
Adhara, Adharaz, Undara, ε CMa, 21 CMa, ADS 5654, CoD -28°3666, FK5 268, HD 52089, HIP 33579, HR 2618, SAO 172676.
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Database references | |
SIMBAD | data |