Procyon (A.CMi) is a binary star system around 11.5 light-years away in the constellation of Canis Minor. Procyon A is the largest and the most luminous of the pair, being a large subgiant star 4 times larger than the Sun. Procyon B is the smaller white dwarf star.
| Observation data Epoch J2000 | |
|---|---|
| Constellation | Canis Minor |
| Right ascension | {{{ra}}} |
| Declination | {{{dec}}} |
| Apparent magnitude (V) | {{{appmag_v}}} |
| Characteristics | |
| Spectral type | F IV-V(A)/DA (B) |
| B-V color index | -0.01 |
| U-B color index | 0.40/0.0 |
| Variable type | Unknown |
| Astrometry | |
| Radial velocity (Rv) | -3.2 km/s km/s |
| Proper motion (μ) | RA: -714.590 mas/yr mas/yr Dec.: -1036.80 mas/yr mas/yr |
| Parallax (π) | 284.56 mas mas |
| Distance | 11.46 ly (3.51 pc) |
| Absolute magnitude (MV) | 2.65/13.04 |
| Details | |
| Mass | 1.42/0.602 M M☉ |
| Radius | 2.048/0.01234 R R☉ |
| Luminosity | 6.93/0.00055 L L☉ |
| Temperature | 6,530/7,740 K K |
| Metallicity | -0.05 dex |
| Rotation | 3.16 km/s |
| Age | 3 Gyr years |
| Other designations | |
a Canis Minoris, 10 Canis Minoris
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