Przybylski's Star
Star in the constellation Centaurus / From Wikipedia, the free encyclopedia
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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 has a unique spectrum showing over-abundances of most rare-earth elements, including some short-lived radioactive isotopes, but under-abundances of more common elements such as iron.
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 11h 37m 37.04096s[2] |
Declination | −46° 42′ 34.8779″[2] |
Apparent magnitude (V) | 7.996–8.020[3] |
Characteristics | |
Spectral type | F0, F5, or G0[4] (F3 Ho)[5] |
U−B color index | +0.20[6] |
B−V color index | +0.76[6] |
Variable type | roAp[3][7] |
Astrometry | |
Radial velocity (Rv) | +12.4±3[8] km/s |
Proper motion (μ) | RA: −46.783±0.015[2] mas/yr Dec.: +34.193±0.018[2] mas/yr |
Parallax (π) | 9.1496 ± 0.0213 mas[2] |
Distance | 356.5 ± 0.8 ly (109.3 ± 0.3 pc) |
Details | |
Mass | 1.4[2] M☉ |
Radius | 1.90[9] R☉ |
Luminosity | 5.55[2] L☉ |
Surface gravity (log g) | 3.97[2] cgs |
Temperature | 6,131[2] K |
Metallicity [Fe/H] | −2.40[10] dex |
Rotation | 188 years[7] |
Rotational velocity (v sin i) | 3.50[11] km/s |
Age | 1.5±0.1[12] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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