![]() The position of Procyon |
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Observation data Epoch J2000 Equinox J2000 |
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Constellation | Canis Minor |
Pronunciation | ![]() |
Right ascension | 07 |
Declination | +05° 13′ 29.9552″ |
Apparent magnitude (V) | 0.34 (A) / 10.7 (B) |
Characteristics | |
Spectral type | F5 IV-V/DA |
U−B color index | −0.01 |
B−V color index | 0.40/0.0 |
Astrometry | |
Radial velocity (Rv) | −3.2 km/s |
Proper motion (μ) | RA: −714.590 mas/yr |
Parallax (π) | 284.56 ± 1.26mas |
Distance | 11.46 ± 0.05 ly (3.51 ± 0.02 pc) |
Absolute magnitude (MV) | 2.65/13.04 |
Details | |
Procyon A | |
Mass | 1.42 ± 0.04M☉ |
Radius | 2.048 ± 0.025R☉ |
Luminosity | 6.93L☉ |
Surface gravity (log g) | 3.96 |
Temperature | 6,530 ± 50K |
Metallicity [Fe/H] | -0.05 ± 0.03dex |
Rotation | 23 days |
Rotational velocity (v sin i) | 3.16 ± 0.50 km/s |
Age | 3Gyr |
Procyon B | |
Mass | 0.602 ± 0.015M☉ |
Radius | 0.01234 ± 0.00032R☉ |
Luminosity | 0.00055 L☉ |
Surface gravity (log g) | 8.0 |
Temperature | 7,740 ± 50K |
Orbit | |
Companion | Procyon B |
Period (P) | 40.82 yr |
Semimajor axis (a) | 1.232" |
Eccentricity (e) | 0.407 |
Inclination (i) | 31.1° |
Longitude of the node (Ω) | 97.3° |
Periastron epoch (T) | 1967.97 |
Argument of periastron (ω) (secondary) |
92.2° |
Other designations | |
α Canis Minoris, 10 Canis Minoris, GCTP 1805.00, HR 2943, BD+05°1739, HD 61421, LHS 233, GJ 280, HIP 37279.
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Database references | |
SIMBAD | data |