HD 66428
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 08h 03m 28.66767s |
| Declination | −01° 09′ 45.7581″ |
| Apparent magnitude (V) | 8.25 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | G8IV(+G) |
| Astrometry | |
| Radial velocity (Rv) | 44.26±0.13 km/s |
| Proper motion (μ) | RA: −65.766±0.029 mas/yr Dec.: −206.999±0.019 mas/yr |
| Parallax (π) | 18.7661±0.0312 mas |
| Distance | 173.8 ± 0.3 ly (53.29 ± 0.09 pc) |
| Absolute magnitude (MV) | +4.56 |
| Details | |
| Mass | 1.09±0.02 M☉ |
| Radius | 1.13±0.03 R☉ |
| Luminosity | 1.28±0.01 L☉ |
| Surface gravity (log g) | 4.37±0.03 cgs |
| Temperature | 5,773±55 K |
| Age | 4.1±1.4 Gyr |
| Other designations | |
| BD−00°1891, HIP 39417, LTT 3038, SAO 135426 | |
| Database references | |
| SIMBAD | data |
HD 66428 is a G-type subgiant star located approximately 174 light-years away in the constellation of Monoceros. This star is similar to the Sun with an apparent magnitude of 8.25, an effective temperature of 5,705±27 K and a solar luminosity 1.28. Its absolute magnitude is 11.1 while its U-V color index is 0.71. It is considered an inactive star and it is metal-rich ([Fe/H] = 0.310). This star has a precise mass of 1.14552 solar masses. This precision comes from the Corot mission that measured asteroseismology.