Beta Canis Minoris
Beta Canis Minoris (β Canis Minoris, abbreviated Beta CMi, β CMi), also named Gomeisa /ɡɒˈmaɪzə/, is a star in the constellation of Canis Minor. In the night sky it is notable for its proximity to the prominent star Procyon.
Position of Beta Canis Minoris | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Canis Minor |
| Right ascension | 07h 27m 09.04174s |
| Declination | +08° 17′ 21.5368″ |
| Apparent magnitude (V) | 2.84–2.92 |
| Characteristics | |
| Spectral type | B8 Ve |
| U−B color index | −0.28 |
| B−V color index | −0.09 |
| Variable type | γ Cas + SPBe |
| Astrometry | |
| Radial velocity (Rv) | +22 km/s |
| Proper motion (μ) | RA: −59.375 ± 1.708 mas/yr Dec.: −35.010 ± 1.368 mas/yr |
| Parallax (π) | 20.3535 ± 1.2220 mas |
| Distance | 160 ± 10 ly (49 ± 3 pc) |
| Absolute magnitude (MV) | −0.59 |
| Details | |
| Mass | 3.5 M☉ |
| Radius | 3.5 R☉ |
| Luminosity | 195 L☉ |
| Surface gravity (log g) | 3.51 cgs |
| Temperature | 11,772 K |
| Rotational velocity (v sin i) | 210 km/s |
| Age | 160+20 −60 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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