HD 111597 is a suspected astrometric binary[7] star system in the southern constellation of Centaurus. It has the Bayer designation p Centauri, while HD 111597 is the star's identifier from the Henry Draper catalogue. The system is visible to the naked eye as a faint point of light with an apparent visual magnitude of 4.90.[2] It is located at a distance of approximately 380 light years from the Sun based on parallax,[1] and has an absolute magnitude of −0.53.[2] The system is a probable member of the Sco OB2 association of co-moving stars.[8] The visible component is a B-type main-sequence star with a stellar classification of B9V.[3]
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 50m 41.16426s[1] |
| Declination | −33° 59′ 57.6145″[1] |
| Apparent magnitude (V) | 4.90[2] |
| Characteristics | |
| Spectral type | B9V[3] |
| B−V color index | −0.031±0.002[2] |
| Astrometry | |
| Radial velocity (Rv) | +4.00±4.20[2] km/s |
| Proper motion (μ) | RA: −30.421[1] mas/yr Dec.: −16.157[1] mas/yr |
| Parallax (π) | 8.5873 ± 0.2402 mas[1] |
| Distance | 380 ± 10 ly (116 ± 3 pc) |
| Absolute magnitude (MV) | −0.53[2] |
| Details | |
| Radius | 3.0[4] R☉ |
| Luminosity | 182.13[2] L☉ |
| Age | 321[5] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
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