77 Ceti
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h 34m 42.62364s |
| Declination | −07° 51′ 34.0026″ |
| Apparent magnitude (V) | 5.731 |
| Characteristics | |
| Evolutionary stage | red giant branch |
| Spectral type | K2 III |
| U−B color index | +1.68 |
| B−V color index | +1.393±0.008 |
| Astrometry | |
| Radial velocity (Rv) | 24.9±2 km/s |
| Proper motion (μ) | RA: +59.658 mas/yr Dec.: −63.960 mas/yr |
| Parallax (π) | 6.5487±0.0618 mas |
| Distance | 498 ± 5 ly (153 ± 1 pc) |
| Absolute magnitude (MV) | +0.01 |
| Details | |
| Mass | 3.5 M☉ |
| Radius | 28 R☉ |
| Luminosity | 239 L☉ |
| Surface gravity (log g) | 1.99 cgs |
| Temperature | 4,478 K |
| Metallicity [Fe/H] | −0.12 dex |
| Age | 250 Myr |
| Other designations | |
| BD−08°484, HD 16074, HIP 12002, HR 752, SAO 129984 | |
| Database references | |
| SIMBAD | data |
77 Ceti is a single, orange-hued star located 498 light years away in the equatorial constellation of Cetus. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.7. This is an evolved giant star with a stellar classification of K2 III. It is radiating 239 times the Sun's luminosity from its photosphere at an effective temperature of 4,478 K.