Delta Canis Majoris
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| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Canis Major |
| Right ascension | 07h 08m 23.5s |
| Declination | -26° 23′ 36″ |
| Apparent magnitude (V) | 1.83 |
| Characteristics | |
| Spectral type | F8 Ia |
| U-B color index | 0.54 |
| B-V color index | 0.68 |
| Variable type | Alpha Cygni |
| Astrometry | |
| Radial velocity (Rv) | 34 km/s |
| Proper motion (μ) | RA: -2.75 mas/yr Dec.: 3.33 mas/yr |
| Parallax (π) | 1.82 ± 0.56 mas |
| Distance | approx. 1800 ly (approx. 500 pc) |
| Absolute magnitude (MV) | -6.87 |
| Details | |
| Mass | 17 M☉ |
| Radius | 200 R☉ |
| Luminosity | 50,000 L☉ |
| Temperature | 6,200 K |
| Metallicity | ? |
| Rotation | ~28 km/s. |
| Age | 1 × 107 years |
| Other designations | |
Delta Canis Majoris (δ CMa / δ Canis Majoris) is a star in the constellation Canis Major. It also has the traditional name Wezen or Wesen. The traditional name comes from the Arabic وزن wazn, meaning a weight. Wazn is also the name for β Columbae.
δ Canis Majoris is a yellow-white F-type supergiant with an apparent magnitude of +1.83. It is the third brightest star in the constellation after Sirius and Adhara. Image:Dcp 3130.jpg
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