Omega Piscium

Omega Piscium
Location of ω Piscium (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pisces
Right ascension 23h 59m 18.69064s[1]
Declination +06° 51′ 47.9562″[1]
Apparent magnitude (V) 4.01[2]
Characteristics
Spectral type F4 IV[3] or F4 V[4]
U−B color index +0.07[2]
B−V color index +0.42[2]
Astrometry
Radial velocity (Rv)+2.9±0.3[5] km/s
Proper motion (μ) RA: +150.35[1] mas/yr
Dec.: −112.12[1] mas/yr
Parallax (π)31.26 ± 0.15 mas[1]
Distance104.3 ± 0.5 ly
(32.0 ± 0.2 pc)
Absolute magnitude (MV)+1.51[6]
Details
ω Psc A
Mass1.22[7] M☉
Luminosity21[6] L☉
Surface gravity (log g)3.74±0.14[7] cgs
Temperature6,641±226[7] K
Metallicity [Fe/H]−0.09[8] dex
Rotational velocity (v sin i)40.3[9] km/s
Age1.337[7] Gyr
Other designations
ω Psc, 28 Piscium, BD+06°5227, FK5 902, HD 224617, HIP 118268, HR 9072, SAO 128513[10]
Database references
SIMBADdata

Omega Piscium (Omega Psc, ω Piscium, ω Psc) is a star approximately 106 light years away from Earth, in the constellation Pisces. It has a spectral type of F4IV, meaning it is a subgiant/dwarf star, and it has a temperature of 6,600 kelvins. It may or may not be a close binary star system. Variations in its spectrum were once interpreted as giving it an orbital period of 2.16 days, but this claim was later debunked as false. It is 20 times brighter than the Sun and is 1.8 times greater in mass, if it is a single star.[11]

It is part of the drawn asterism in classic and modern renderings as the start of the tail, east of the Circlet of Pisces,[11] a near-circle which forms all but the tail (the head and body) of the western (fatter) "fish" in the constellation of two fishes.[12]

  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Griffin1960 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference abt2009 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference David2015 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Pace2013 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference aaa493_3_1099 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ a b "Omega Psc". Archived from the original on April 30, 2007. Retrieved September 30, 2007.
  12. ^ "Western Pisces". Archived from the original on June 15, 2007. Retrieved September 30, 2007.