| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 04h 24m 50.705s[1] |
| Declination | −50° 37′ 19.88″[1] |
| Apparent magnitude (V) | 7.69[2] |
| Characteristics | |
| Spectral type | G1IV/V[2] |
| Apparent magnitude (B) | 8.412[3] |
| Apparent magnitude (R) | 7.70[3] |
| Apparent magnitude (J) | 6.395±0.026[3] |
| Apparent magnitude (H) | 6.133±0.031[3] |
| Apparent magnitude (K) | 6.006±0.029[3] |
| B−V color index | 0.722[2] |
| V−R color index | 0.01[3] |
| Astrometry | |
| Radial velocity (Rv) | −9.315±0.002[2] km/s |
| Proper motion (μ) | RA: −67.277[1] mas/yr Dec.: −143.680[1] mas/yr |
| Parallax (π) | 18.1242 ± 0.0247 mas[1] |
| Distance | 180.0 ± 0.2 ly (55.17 ± 0.08 pc) |
| Absolute magnitude (MV) | 4.001[2] |
| Details | |
| Mass | 1.11±0.01[4] M☉ |
| Radius | 1.57±0.02[4] R☉ |
| Luminosity | 2.19±0.01[4] L☉ |
| Surface gravity (log g) | 4.08±0.02[4] cgs |
| Temperature | 5,607±37[4] K |
| Metallicity [Fe/H] | 0.36±0.03[2] dex |
| Rotational velocity (v sin i) | 2.50±1.0[2] km/s |
| Age | 7.8±0.4[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | A |
| B | |
| Exoplanet Archive | data |
HD 28254 is a binary star system located 180 light-years away in the constellation Dorado. The primary component is an 8th magnitude G-type main-sequence star. This star is larger, cooler, brighter, and more massive than the Sun, and its metal content is 2.3 times as much as the Sun. In 2009, a gas giant exoplanet was found in orbit around the star.
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