Omicron Piscium
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h 45m 23.63185s |
| Declination | +09° 09′ 27.8530″ |
| Apparent magnitude (V) | 4.27 |
| Characteristics | |
| Evolutionary stage | Horizontal branch |
| Spectral type | K0 III |
| U−B color index | +0.736 |
| B−V color index | +0.959 |
| Astrometry | |
| Proper motion (μ) | RA: +72.98 mas/yr Dec.: +39.30 mas/yr |
| Parallax (π) | 11.67±0.67 mas |
| Distance | 280 ± 20 ly (86 ± 5 pc) |
| Absolute magnitude (MV) | −0.22 |
| Details | |
| Mass | 3.03 M☉ |
| Radius | 14.38±0.21 R☉ |
| Luminosity | 132 L☉ |
| Surface gravity (log g) | 2.57 cgs |
| Temperature | 5,004 K |
| Metallicity [Fe/H] | 0.10 dex |
| Rotational velocity (v sin i) | 2.88 km/s |
| Age | 390 Myr |
| Other designations | |
| Torcular, Torcularis Septentrionalis, ο Psc, 110 Piscium, BD+08°273, FK5 60, GC 2139, HD 10761, HIP 8198, HR 510, SAO 110110, PPM 144950 | |
| Database references | |
| SIMBAD | data |
Omicron Piscium (ο Piscium, abbreviated Omi Psc, ο Psc) is a binary star in the constellation of Pisces. It is visible to the naked eye, having an apparent visual magnitude of 4.27. Based upon an annual parallax shift of 11.67 mas as seen from the Earth, the system is located roughly 280 light-years from the Sun. It is positioned near the ecliptic, so it can be occulted by the Moon and (very rarely) by planets. The next occultation by a planet will be by Venus on 13 May 2027 over Newfoundland and the Atlantic Ocean.: 165 It is a member of the thin disk population of the Milky Way.
The two components are designated Omicron Piscium A (formally named Torcular /ˈtɔːrkjʊlər/) and B.