HD 102350
HD 102350 is a single star in the constellation Centaurus. It has a yellow hue and is visible to the naked eye with an apparent visual magnitude of 4.11. The distance to this star is approximately 390 light years based on parallax, but it is drifting closer with a radial velocity of −3 km/s. It has an absolute magnitude of −1.51.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h 46m 30.82257s |
| Declination | −61° 10′ 42.2364″ |
| Apparent magnitude (V) | 4.11 |
| Characteristics | |
| Spectral type | G0II or G5Ib/II |
| B−V color index | 0.895±0.008 |
| Variable type | suspected δ Cep |
| Astrometry | |
| Radial velocity (Rv) | −3.4±0.7 km/s |
| Proper motion (μ) | RA: −21.87±0.16 mas/yr Dec.: −16.41±0.15 mas/yr |
| Parallax (π) | 8.37 ± 0.17 mas |
| Distance | 390 ± 8 ly (119 ± 2 pc) |
| Absolute magnitude (MV) | −1.51 |
| Details | |
| Radius | 21.96+1.70 −3.27 R☉ |
| Luminosity | 282.8±9.0 L☉ |
| Temperature | 5,051+424 −185 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an aging bright giant star with a stellar classification of G0II. It is a candidate Cepheid variable, but Hipparcos photometry found its brightness to be constant. The star has expanded to 22 times the radius of the Sun and is radiating 283 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,051 K. It has a magnitude 13.0 visual companion at an angular separation of 24.3″ along a position angle of 313° relative to the brighter component, as of 2000.
HD 102350 is listed in the Washington Double Star Catalog as having a 13th magnitude companion about 25″ away, but it is a distant background object unrelated to HD 102350.