Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 11h 46m 30.82257s[1] |
Declination | −61° 10′ 42.2364″[1] |
Apparent magnitude (V) | 4.11[2] |
Characteristics | |
Spectral type | G0II[3] or G5Ib/II[4] |
B−V color index | 0.895±0.008[2] |
Variable type | suspected δ Cep[5] |
Astrometry | |
Radial velocity (Rv) | −3.4±0.7[2] km/s |
Proper motion (μ) | RA: −21.87±0.16[1] mas/yr Dec.: −16.41±0.15[1] mas/yr |
Parallax (π) | 8.37 ± 0.17 mas[1] |
Distance | 390 ± 8 ly (119 ± 2 pc) |
Absolute magnitude (MV) | −1.51[6] |
Details | |
Radius | 21.96+1.70 −3.27[7] R☉ |
Luminosity | 282.8±9.0[7] L☉ |
Temperature | 5,051+424 −185[7] K |
Other designations | |
Database references | |
SIMBAD | data |
HD 102350 is a single[9] 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.[2] 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.[2] It has an absolute magnitude of −1.51.[6]
This is an aging bright giant star with a stellar classification of G0II.[3] It is a candidate Cepheid variable,[5] but Hipparcos photometry found its brightness to be constant.[10] The star has expanded to 22[7] times the radius of the Sun and is radiating 283[7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,051 K.[7] 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.[11]
HD 102350 is listed in the Washington Double Star Catalog as having a 13th magnitude companion about 25″ away,[12] but it is a distant background object unrelated to HD 102350.[13][9]