Zeta Piscium
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Pisces |
| ζ Psc A | |
| Right ascension | 01h 13m 45.17477s |
| Declination | +07° 34′ 31.2745″ |
| Apparent magnitude (V) | 5.28 |
| ζ Psc B | |
| Right ascension | 01h 13m 43.88735s |
| Declination | +07° 34′ 42.1765″ |
| Apparent magnitude (V) | 6.43 |
| Characteristics | |
| Spectral type | A7IV + A7IV + F7V + G7V + ? |
| Astrometry | |
| ζ Psc A | |
| Proper motion (μ) | RA: +145.00 mas/yr Dec.: −55.69 mas/yr |
| Parallax (π) | 18.76±2.76 mas |
| Distance | approx. 170 ly (approx. 53 pc) |
| Absolute magnitude (MV) | 1.97 |
| ζ Psc B | |
| Proper motion (μ) | RA: +181.78 mas/yr Dec.: −40.34 mas/yr |
| Details | |
| ζ Psc A | |
| Mass | 2.07±0.13 M☉ |
| Luminosity | 27.4 L☉ |
| Temperature | 7,345 K |
| Rotational velocity (v sin i) | 196 km/s |
| ζ Psc B | |
| Metallicity [Fe/H] | 0.18 dex |
| Other designations | |
| Revati, ζ Psc, 86 Piscium, WDS J01137+0735 | |
| ζ Psc A: BD+06°174, FK5 1033, HD 7344, HIP 5737, HR 361, SAO 109739 | |
| ζ Psc B: BD+06°175, HD 7345, HIP 5743, HR 362, SAO 109740 | |
| Database references | |
| SIMBAD | data |
| A | |
| B | |
Zeta Piscium (ζ Piscium, abbreviated Zet Psc, ζ Psc) is a quintuple star system in the zodiac constellation of Pisces. Based upon parallax measurements obtained during the Hipparcos mission, it is located roughly 170 light-years (52 parsecs) distant from the Sun.
The system consists of a binary star (Zeta Piscium A) and a triple star system (BC), the latter consisting of a spectroscopic binary (B) and a single star (C). A's two components are themselves designated Zeta Piscium Aa (officially named Revati /ˈreɪvəti/) and Ab; B's two components as Ba and Bb.
As the star system is 0.21° south of the ecliptic, it can be eclipsed (occulted) by the moon, when close to or at one of its two nodes of its orbit; and is eclipsed by the sun from about 8-10 April.