Global InformationHD 100825 information
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 35m 55.58452s[1] |
| Declination | −47° 38′ 29.9009″[1] |
| Apparent magnitude (V) | +5.26[2] |
| Characteristics | |
| Spectral type | F0V[3] or A7m[4] |
| B−V color index | +0.257±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | +5.2±2.8[2] km/s |
| Proper motion (μ) | RA: +33.897[1] mas/yr Dec.: −49.629[1] mas/yr |
| Parallax (π) | 17.3990 ± 0.1049 mas[1] |
| Distance | 187 ± 1 ly (57.5 ± 0.3 pc) |
| Absolute magnitude (MV) | +1.31[2] |
| Details | |
| Mass | 1.62[5] M☉ |
| Radius | 2.67[1] R☉ |
| Luminosity | 20.846[1] L☉ |
| Surface gravity (log g) | 3.97±0.14[5] cgs |
| Temperature | 7,737±263[5] K |
| Age | 467[5] Myr |
| Other designations | |
C2 Cen, CD−46°7205, FK5 435, GC 15901, HD 100825, HIP 56573, HR 4466, SAO 222895[6] | |
| Database references | |
| SIMBAD | data |
HD 100825 is a single[7] 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.[2] It is located at a distance of 187 light years from the Sun based on parallax, with an absolute magnitude of +1.31.[2] 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.[2] It is a member of the Sirius supercluster of co-moving stars.[8]
This is an Am star[4] or metallic-line star with a stellar classification of F0V,[3] indicating it is a F-type main-sequence star that is generating energy by core hydrogen fusion. It is an estimated 467[5] million years old and has 1.62[5] times the mass of the Sun. The star is radiating 21 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 7,737 K.[5]
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