15 Canis Majoris
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Canis Major |
| Right ascension | 06h 53m 32.907s |
| Declination | −20° 13′ 27.32″ |
| Apparent magnitude (V) | +4.82 |
| Characteristics | |
| Spectral type | B1 Ib |
| U−B color index | -0.96 |
| B−V color index | -0.21 |
| Variable type | β Cep |
| Astrometry | |
| Radial velocity (Rv) | 28.00 km/s |
| Proper motion (μ) |
RA: -5.46 ± 0.16 mas/yr Dec.: 3.58 ± 0.17 mas/yr |
| Parallax (π) | 2.68 ± 0.24mas |
| Distance | 1,200 ± 100 ly (370 ± 30 pc) |
| Details | |
| Mass | 12.8 ± 1.2 M☉ |
| Radius | 6.8 ± 1.2 R☉ |
| Luminosity | 20,000 L☉ |
| Surface gravity (log g) | 3.89 ± 0.20 cgs |
| Temperature | 26,100 ± 1,200 K |
| Rotational velocity (v sin i) | 20 ± 12 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
15 Canis Majoris is a star in the constellation Canis Major.
15 Canis Majoris is a blue-white B-type subgiant with a mean apparent magnitude of +4.82. It is approximately 1200 light years from Earth. It is classified as a Beta Cephei type variable star and its brightness varies from magnitude +4.79 to +4.84 with a period of 4.43 hours.
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