HD 4732
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 49m 13.95022s |
| Declination | −24° 08′ 11.9907″ |
| Apparent magnitude (V) | 5.9 |
| Characteristics | |
| Spectral type | K0IV |
| U−B color index | 0.72 |
| B−V color index | 0.95 |
| Astrometry | |
| Radial velocity (Rv) | 24.81±0.12 km/s |
| Proper motion (μ) | RA: 81.165 mas/yr Dec.: –56.642 mas/yr |
| Parallax (π) | 18.1441±0.0422 mas |
| Distance | 179.8 ± 0.4 ly (55.1 ± 0.1 pc) |
| Absolute magnitude (MV) | 2.09 |
| Details | |
| Mass | 1.61 ± 0.05 M☉ |
| Radius | 5.1 ± 0.1 R☉ |
| Luminosity | 14.8 ± 0.2 L☉ |
| Surface gravity (log g) | 3.22 ± 0.03 cgs |
| Temperature | 4994 ± 32 K |
| Metallicity [Fe/H] | −0.01+0.05 −0.11 dex |
| Age | 2.3 ± 0.2 Gyr |
| Other designations | |
| CD−24 345, HD 4732, HIP 3834, HR 228, SAO 166602, ADS 679, 2MASS J00491393-2408119 | |
| Database references | |
| SIMBAD | A |
| B | |
| Exoplanet Archive | data |
HD 4732 is a red giant star of magnitude 5.9 located in the constellation Cetus. It is 180 light-years from the Solar System.
The star is classified by some sources as a K-type giant and by others as a subgiant. It has an absolute magnitude of 2.09, and its radial velocity indicates that the star is moving away from the Solar System. There is a companion star about half the mass of the Sun at a separation of 8.77 arcseconds, corresponding to 481 AU.