Zeta Piscium

Zeta Piscium
Location of ζ Piscium (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pisces
ζ Psc A
Right ascension 01h 13m 45.17477s[1]
Declination +07° 34′ 31.2745″[1]
Apparent magnitude (V) 5.28[2]
ζ Psc B
Right ascension 01h 13m 43.88735s[1]
Declination +07° 34′ 42.1765″[1]
Apparent magnitude (V) 6.43[2]
Characteristics
Spectral type A7IV + A7IV + F7V + G7V + ?[2]
Astrometry
ζ Psc A
Proper motion (μ) RA: +145.00[1] mas/yr
Dec.: −55.69[1] mas/yr
Parallax (π)18.76 ± 2.76 mas[1]
Distanceapprox. 170 ly
(approx. 53 pc)
Absolute magnitude (MV)1.97[3]
ζ Psc B
Proper motion (μ) RA: +181.78[1] mas/yr
Dec.: −40.34[1] mas/yr
Details[4]
ζ Psc A
Mass2.07±0.13 M☉
Luminosity27.4 L☉
Temperature7,345 K
Rotational velocity (v sin i)196 km/s
ζ Psc B
Metallicity [Fe/H]0.18[3] 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[5]
ζ Psc B: BD+06°175, HD 7345, HIP 5743, HR 362, SAO 109740[6]
Database references
SIMBADdata
A
B

Zeta Piscium (ζ Piscium, abbreviated Zet Psc, ζ Psc) is a quintuple[2] 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.[1]

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/)[7] and Ab; B's two components as Ba and Bb.

As the star system is 0.21° south of the ecliptic,[8] it can be eclipsed (occulted) by the moon, when close to or at one of its two nodes of its orbit;[9] and is eclipsed by the sun from about 8-10 April.[10]

  1. ^ a b c d e f g h i j Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Zorec2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference SIMBAD1 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD2 was invoked but never defined (see the help page).
  7. ^ "Naming Stars". IAU.org. Retrieved 16 December 2017.
  8. ^ Cite error: The named reference pratt was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Meyer1995 was invoked but never defined (see the help page).
  10. ^ In the Sky Earth astronomy reference utility showing the ecliptic and relevant date as at J2000 - present.