| Observation data EpochJ2000.0 EquinoxJ2000.0 (ICRS) | |
|---|---|
| Constellation | Cetus |
| Right ascension | 00h 56m 01.48867s[1] |
| Declination | −11° 15′ 59.4988″[1] |
| Apparent magnitude (V) | 5.31[2] |
| Characteristics | |
| Spectral type | K5 III[3] |
| B−Vcolor index | +1.52[2] |
| Astrometry | |
| Radial velocity (Rv) | −25.48±0.38[1] km/s |
| Proper motion (μ) | RA: −26.909[1]mas/yr Dec.: −7.174[1]mas/yr |
| Parallax (π) | 6.1068±0.2570 mas[1] |
| Distance | 530 ± 20 ly (164 ± 7 pc) |
| Absolute magnitude (MV) | −0.78[4] |
| Details | |
| Mass | 1.4[5] M☉ |
| Radius | 44.33+0.76 −2.94[1] R☉ |
| Luminosity | 441±21[1] L☉ |
| Surface gravity (log g) | 1.67[6] cgs |
| Temperature | 3,974+139 −34[1] K |
| Metallicity [Fe/H] | −0.31[6] dex |
| Rotational velocity (v sin i) | 1.0[5] km/s |
| Other designations | |
| φ3 Ceti,22 Cet,BD−12° 162,HD 5437,HIP 4371,HR 267,SAO 147519[7] | |
| Database references | |
| SIMBAD | data |
Phi3 Ceti is a solitary,[8] orange-huedstar in the equatorialconstellation ofCetus. It is faintly visible to the naked eye with anapparent visual magnitude of 5.31.[2] Based upon an annualparallax shift of6.11 mas as seen from Earth,[1] it is located approximately 530 light years from theSun, give or take 20 light years. The star is drifting closer with aradial velocity of −25.5 km/s.[1]
This is anevolvedK-typegiant star with astellar classification of K5 III.[3] It has about 1.4[5] times the mass and 44[1] times the radius of the Sun. The star radiates 441 times thesolar luminosity from itsphotosphere at aneffective temperature of 3,974 K.[1]
