Alpha Pyxidis
Alpha Pyxidis, Latinised from α Pyxidis, is a giant star in the constellation Pyxis. It has a stellar classification of B1.5III and is a Beta Cephei variable. This star has more than ten times the mass of the Sun and is more than six times the Sun's radius. The surface temperature is 24,300 K and the star is about 10,000 times as luminous as the Sun. Stars such as this with more than 10 solar masses are expected to end their life by exploding as a supernova.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pyxis |
| Right ascension | 08h 43m 35.53756s |
| Declination | −33° 11′ 10.9898″ |
| Apparent magnitude (V) | 3.67 |
| Characteristics | |
| Spectral type | B1.5III |
| U−B color index | −0.84 |
| B−V color index | −0.19 |
| Variable type | Beta Cephei |
| Astrometry | |
| Radial velocity (Rv) | +15.3 km/s |
| Proper motion (μ) | RA: −14.27 mas/yr Dec.: +10.43 mas/yr |
| Parallax (π) | 3.71 ± 0.14 mas |
| Distance | 880 ± 30 ly (270 ± 10 pc) |
| Absolute magnitude (MV) | −3.47 |
| Details | |
| Mass | 10.7 M☉ |
| Radius | 6.3 ± 1.0 R☉ |
| Luminosity | 10,000 L☉ |
| Surface gravity (log g) | 3.63 cgs |
| Temperature | 24,300 K |
| Metallicity [Fe/H] | −0.18 dex |
| Rotational velocity (v sin i) | 11 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
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