6 Cassiopeiae
6 Cassiopeiae (6 Cas) is a white hypergiant in the constellation Cassiopeia, and a small-amplitude variable star.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 48m 50.171s |
| Declination | +62° 12′ 52.26″ |
| Apparent magnitude (V) | +5.43 (5.34 - 5.45) |
| Characteristics | |
| Spectral type | A2.5 Ia+ |
| U−B color index | −0.02 |
| B−V color index | +0.67 |
| Variable type | α Cyg |
| Astrometry | |
| Proper motion (μ) | RA: −3.57±0.35 mas/yr Dec.: −1.57±0.33 mas/yr |
| Parallax (π) | 0.53 ± 0.37 mas |
| Distance | 2,510 pc |
| Absolute magnitude (MV) | −8.30 |
| Details | |
| Mass | 22.0 M☉ |
| Radius | 193 R☉ |
| Luminosity | 200,000 L☉ |
| Surface gravity (log g) | 1.59 cgs |
| Temperature | 10,023±227 K |
| Metallicity [Fe/H] | 0.29 dex |
| Rotational velocity (v sin i) | 50 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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