| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Phoenix |
| Right ascension | 00h 24m 20.2782s[1] |
| Declination | −56° 39′ 00.1818″[1] |
| Apparent magnitude (V) | 8.99[2] |
| Characteristics | |
| Spectral type | G2/G3 IV-V[2] |
| Astrometry | |
| Radial velocity (Rv) | 8.43 ± 0.22[2] km/s |
| Proper motion (μ) | RA: 78.454±0.042[1] mas/yr Dec.: 14.512±0.040[1] mas/yr |
| Parallax (π) | 11.6408 ± 0.0276 mas[1] |
| Distance | 280.2 ± 0.7 ly (85.9 ± 0.2 pc) |
| Absolute magnitude (MV) | 3.96 ± 0.21 [3] |
| Details | |
| Mass | 1.2 ± 0.03[4] M☉ |
| Radius | 1.4 ± 0.04[4] R☉ |
| Luminosity | 2.18 ± 0.02[4] L☉ |
| Surface gravity (log g) | 4.22 ± 0.03[4] cgs |
| Temperature | 5935 ± 64[4] K |
| Metallicity [Fe/H] | 0.30 ± 0.03[5] dex |
| Age | 4.4 ± 0.8[4] Gyr |
| Other designations | |
| 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.[6]
- ^ a b c d e Cite error: The named reference
Gaia DR2was invoked but never defined (see the help page). - ^ a b c d Cite error: The named reference
Simbadwas invoked but never defined (see the help page). - ^ Holmberg; et al. (2009). "HD 2039". Geneva-Copenhagen Survey of Solar neighbourhood III. Retrieved 2010-12-04.
- ^ a b c d e f Cite error: The named reference
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Rob-Brittwas invoked but never defined (see the help page).