Przybylski's Star
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 37m 37.04096s |
| Declination | −46° 42′ 34.8779″ |
| Apparent magnitude (V) | 7.996–8.020 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F0, F5, or G0 (F3 Ho) |
| U−B color index | +0.20 |
| B−V color index | +0.76 |
| Variable type | roAp |
| Astrometry | |
| Radial velocity (Rv) | +12.4±3 km/s |
| Proper motion (μ) | RA: −46.783 mas/yr Dec.: +34.193 mas/yr |
| Parallax (π) | 9.1496±0.0213 mas |
| Distance | 356.5 ± 0.8 ly (109.3 ± 0.3 pc) |
| Absolute magnitude (MV) | +2.8 |
| Details | |
| Mass | 1.4 M☉ |
| Radius | 1.90 R☉ |
| Luminosity | 5.55 L☉ |
| Surface gravity (log g) | 3.97 cgs |
| Temperature | 6,131 K |
| Metallicity [Fe/H] | −2.40 dex |
| Rotation | 188 years |
| Rotational velocity (v sin i) | 3.50 km/s |
| Age | 1.5±0.1 Gyr |
| Other designations | |
| V816 Cen, CD−46°7232, HD 101065, HIP 56709, SAO 222918 | |
| Database references | |
| SIMBAD | data |
Przybylski's Star (pronounced /pʃɪˈbɪlskiːz/ or /ʃɪˈbɪlskiːz/), or HD 101065, is a rapidly oscillating Ap star at roughly 356 light-years (109 parsecs) from the Sun in the southern constellation of Centaurus. It is an unusual chemically peculiar star with a unique spectrum showing over-abundances of most rare-earth elements, for example, but under-abundances of more common elements such as iron.