HD 100825
HD 100825 is a single star in the southern constellation of Centaurus. It has the Bayer designation C2 Centauri, while HD 100825 is the identifier from the Henry Draper catalogue. The star has a yellow-white hue and is dimly visible to the naked eye with an apparent visual magnitude of +5.26. It is located at a distance of 187 light years from the Sun based on parallax, with an absolute magnitude of +1.31. The radial velocity is poorly constrained, but the star appears to be drifting further away from the Sun at the rate of around 5 km/s. It is a member of the Sirius supercluster of co-moving stars.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 35m 55.58452s |
| Declination | −47° 38′ 29.9009″ |
| Apparent magnitude (V) | +5.26 |
| Characteristics | |
| Spectral type | F0V or A7m |
| B−V color index | +0.257±0.003 |
| Astrometry | |
| Radial velocity (Rv) | +5.2±2.8 km/s |
| Proper motion (μ) | RA: +33.897 mas/yr Dec.: −49.629 mas/yr |
| Parallax (π) | 17.3990 ± 0.1049 mas |
| Distance | 187 ± 1 ly (57.5 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.31 |
| Details | |
| Mass | 1.62 M☉ |
| Radius | 2.67 R☉ |
| Luminosity | 20.846 L☉ |
| Surface gravity (log g) | 3.97±0.14 cgs |
| Temperature | 7,737±263 K |
| Age | 467 Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an Am star or metallic-line star with a stellar classification of F0V, indicating it is a F-type main-sequence star that is generating energy by core hydrogen fusion. It is an estimated 467 million years old and has 1.62 times the mass of the Sun. The star is radiating 21 times the luminosity of the Sun from its photosphere at an effective temperature of 7,737 K.