Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Musca |
Right ascension | 11h 49m 56.61541s[1] |
Declination | −70° 13′ 32.8408″[1] |
Apparent magnitude (V) | 4.98[2] |
Characteristics | |
Spectral type | G6Ib[3] |
U−B color index | +1.22[4] |
B−V color index | +1.40[4] |
Astrometry | |
Radial velocity (Rv) | +15.90[5] km/s |
Proper motion (μ) | RA: −8.113[1] mas/yr Dec.: −0.834[1] mas/yr |
Parallax (π) | 2.1101 ± 0.1063 mas[1] |
Distance | 1,550 ± 80 ly (470 ± 20 pc) |
Absolute magnitude (MV) | −2.33[2] |
Details | |
Mass | 2.3[6] M☉ |
Radius | 78[1] R☉ |
Luminosity | 1,593[2] L☉ |
Surface gravity (log g) | 0.63[6] cgs |
Temperature | 4,500[7] K |
Metallicity [Fe/H] | −0.34[6] dex |
Rotational velocity (v sin i) | 7.6[8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 102839 is a class G6Ib (yellow supergiant) star in the constellation Musca. Its apparent magnitude is 4.98 and it is approximately 1,550 light years away from Earth based on parallax.