HD 124448
Star in the constellation Centaurus
From Wikipedia, the free encyclopedia
HD 124448, also called Popper's Star and V821 Centauri, is an extreme helium star in the Centaurus constellation.[1] Discovered by astronomer Daniel Popper, this star has a spectral classification of B2-B3.[7][8]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 14m 58.6293s[2] |
| Declination | −46° 17′ 19.294″[2] |
| Apparent magnitude (V) | 9.94 - 10.03[3] |
| Characteristics | |
| Evolutionary stage | B(p)[4] |
| Variable type | PV Tel?[3] |
| Astrometry | |
| Proper motion (μ) | RA: −6.544±0.038 mas/yr Dec.: −0.049±0.032 mas/yr |
| Parallax (π) | 0.6240±0.0312 mas[2] |
| Distance | 5,200 ± 300 ly (1,600 ± 80 pc) |
| Details | |
| Mass | 6.7[5] M☉ |
| Radius | 5.2[2] R☉ |
| Luminosity | 1,282[2] L☉ |
| Surface gravity (log g) | 3.86[5] cgs |
| Temperature | 15,481[5] K |
| Metallicity [Fe/H] | −0.55[5] dex |
| Other designations | |
| V821 Cen, HD 124448, HIP 69619, 2MASS J14145863-4617192[6] | |
| Database references | |
| SIMBAD | data |
Peter M. Corben et al. announced that the star is a variable star, in 1972.[9] It was given its variable star designation, V821 Centauri, in 1981.[10]
