Epsilon Capricorni
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Capricornus |
| Right ascension | 21h 37m 04.83068s |
| Declination | −19° 27′ 57.6464″ |
| Apparent magnitude (V) | +4.62 |
| Characteristics | |
| Spectral type | B2.5 Vpe |
| U−B color index | −0.64 |
| B−V color index | −0.19 |
| Variable type | γ Cas |
| Astrometry | |
| Proper motion (μ) | RA: +12.79 mas/yr Dec.: +0.28 mas/yr |
| Parallax (π) | 3.09±0.18 mas |
| Distance | 1,060 ± 60 ly (320 ± 20 pc) |
| Absolute magnitude (MV) | −3.03 |
| Details | |
| ε Cap A | |
| Mass | 7.6 M☉ |
| Radius | 4.80 R☉ |
| Luminosity | 4,649 L☉ |
| Surface gravity (log g) | 4.0 cgs |
| Temperature | 18,800 K |
| Metallicity [Fe/H] | −0.08 dex |
| Rotational velocity (v sin i) | 225 km/s |
| Age | 27.5±4.2 Myr |
| Other designations | |
| Castra, ε Cap, 39 Cap, BD−20°6251, FK5 3724, HD 205637, HIP 106723, HR 8260, SAO 164520, WDS J21371-1928A | |
| Database references | |
| SIMBAD | data |
Epsilon Capricorni is a binary star system in the constellation Capricornus. Based upon an annual parallax shift of 3.09 mas as seen from the Earth, the star is located about 1,060 light years from the Sun. It can be seen with the naked eye, having a combined apparent visual magnitude of 4.62.