| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h34m 42.62373s[1] |
| Declination | −07° 51′ 34.0113″[1] |
| Apparent magnitude (V) | 5.731[2] |
| Characteristics | |
| Spectral type | K2 III[3] |
| U−B color index | +1.68[4] |
| B−V color index | +1.393±0.008[5] |
| Astrometry | |
| Radial velocity (Rv) | 24.9±2[6] km/s |
| Proper motion (μ) | RA: +59.581[1] mas/yr Dec.: −63.696[1] mas/yr |
| Parallax (π) | 6.6740 ± 0.1337 mas[1] |
| Distance | 489 ± 10 ly (150 ± 3 pc) |
| Absolute magnitude (MV) | +0.01[5] |
| Details | |
| Radius | 25.02+1.39 −4.09[1] R☉ |
| Luminosity | 189.1±4.5[1] L☉ |
| Temperature | 4,279+400 −114[1] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
77 Ceti is a single,[8] orange-hued star located 489[1] light years away in the equatorial constellationofCetus. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.7.[2] This is an evolved giant star with a stellar classification of K2 III.[3] It is radiating 187 times the Sun's luminosity from its photosphere at an effective temperature of 4,206 K.[9]
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