HD 2039
The Phoenix constellation, where HD 2039 is located | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Phoenix |
| Right ascension | 00h 24m 20.2778s |
| Declination | −56° 39′ 00.180″ |
| Apparent magnitude (V) | 8.99 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | G2/G3 IV-V |
| Astrometry | |
| Radial velocity (Rv) | 8.55±0.15 km/s |
| Proper motion (μ) | RA: +78.658±0.013 mas/yr Dec.: +14.362±0.014 mas/yr |
| Parallax (π) | 11.7661±0.0139 mas |
| Distance | 277.2 ± 0.3 ly (85.0 ± 0.1 pc) |
| Absolute magnitude (MV) | 3.96±0.21 |
| Details | |
| Mass | 1.2±0.03 M☉ |
| Radius | 1.4±0.04 R☉ |
| Luminosity | 2.18±0.02 L☉ |
| Surface gravity (log g) | 4.22±0.03 cgs |
| Temperature | 5,935±64 K |
| Metallicity [Fe/H] | 0.30±0.03 dex |
| Age | 4.4±0.8 Gyr |
| Other designations | |
| CD−57°71, HIP 1931, SAO 232025, 2MASS J00242028-5639001 | |
| Database references | |
| SIMBAD | data |
HD 2039 is a yellow dwarf or yellow subgiant star in the constellation Phoenix. The star is not visible to the naked eye, and lies 280 light years away from the Sun. HD 2039 is a relatively stable star, and an exoplanet at least three times the mass of the planet Jupiter has been discovered in its orbit; this exoplanet, known as HD 2039 b, was the 100th exoplanet to be discovered.