Back Gorgonea Quarta AST Gorgonea Quarta Spanish امگا برساووش Persian Omega Persei ID Gorgonea Quarta Dutch Omega Persei Portuguese Gorgonea Quarta Swedish 大陵增十八 Chinese

Omega Persei

Omega Persei
Location of ω Persei (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Perseus
Right ascension 03h 11m 17.38161s[1]
Declination +39° 36′ 41.7014″[1]
Apparent magnitude (V) +4.614[2]
Characteristics
Evolutionary stage red clump[3]
Spectral type K0 III[2]
B−V color index 1.122[2]
Astrometry
Radial velocity (Rv)6.61[2] km/s
Proper motion (μ) RA: −26.26[1] mas/yr
Dec.: +5.40[1] mas/yr
Parallax (π)11.32 ± 0.23 mas[1]
Distance288 ± 6 ly
(88 ± 2 pc)
Absolute magnitude (MV)−0.234[4]
Details
Mass2.04[2] M☉
Radius19[5] R☉
Luminosity144.5[2] L☉
Surface gravity (log g)2.5[5] cgs
Temperature4,586±18[2] K
Metallicity [Fe/H]−0.10[4] dex
Rotational velocity (v sin i)3.3[5] km/s
Age1.65[2] Gyr
Other designations
ω Per, 28 Persei, BD+39° 724, FK5 2667, HD 19656, HIP 14817, HR 947, SAO 56224, WDS J03113+3937A[6]
Database references
SIMBADdata

Omega Persei (ω Persei) is a solitary,[7] orange-hued star in the northern constellation of Perseus. The star is faintly visible to the naked eye with an apparent visual magnitude of +4.6.[2] Based upon an annual parallax shift of 11.32 mas as seen from the Earth,[1] the star is about 288 light years from the Sun.

ω Persei has the traditional name Gorgonea Quarta /ɡɔːrɡəˈniːə ˈkwɔːrtə/, being the fourth member of the quartet called the Gorgonea in reference to the Gorgons from the legend of Perseus.[8]

This is an evolved K-type giant star with a stellar classification of K0 III.[2] It is a red clump star that is generating energy via helium fusion at its core.[3] At the estimated age of 1.65 billion years, Omega Persei has double[2] times the mass of the Sun and has expanded to about 19[5] times the Sun's radius. It is radiating 144.5 times the Sun's luminosity from its photosphere at an effective temperature of 4,586 K.[2]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k l Cite error: The named reference Luck2015 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Alves2000 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Soubiran2008 was invoked but never defined (see the help page).
  5. ^ a b c d Cite error: The named reference Massarotti2008 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference allen1899 was invoked but never defined (see the help page).
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