69 Ceti
Star in the constellation Cetus
From Wikipedia, the free encyclopedia
69 Ceti is a single[8] star located around 860[1] light years away in the equatorial constellation of Cetus. It is visible to the naked eye with an apparent visual magnitude of 5.3.[2] This is an aging red giant star with a stellar classification of M1/2III.[4] It is radiating 1,813 times the Sun's luminosity from an enlarged photosphere, 100 times the Sun's radius, at an effective temperature of 3,765 K.[1]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cetus |
| Right ascension | 02h 21m 56.62838s[1] |
| Declination | +00° 23′ 44.4288″[1] |
| Apparent magnitude (V) | 5.287[2] |
| Characteristics | |
| Evolutionary stage | AGB[3] |
| Spectral type | M1/2III[4] |
| U−B color index | +1.85[5] |
| B−V color index | +1.65[5] |
| Astrometry | |
| Radial velocity (Rv) | +26.99±0.32[1] km/s |
| Proper motion (μ) | RA: −12.393[1] mas/yr Dec.: −8.059[1] mas/yr |
| Parallax (π) | 3.7821±0.2323 mas[1] |
| Distance | 860 ± 50 ly (260 ± 20 pc) |
| Absolute magnitude (MV) | −2.73[6] |
| Details | |
| Radius | 100+10 −18[1] R☉ |
| Luminosity | 1,813±126[1] L☉ |
| Temperature | 3,765+392 −177[1] K |
| Other designations | |
| 69 Cet, BD−00°355, HD 14652, HIP 11021, HR 689, SAO 110495[7] | |
| Database references | |
| SIMBAD | data |
