Psi3 Piscium

For other stars with this Bayer designation, see ψ Piscium (disambiguation).
Psi3 Piscium
Location of ψ3 Piscium (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pisces
Right ascension 01h 09m 49.20099s[1]
Declination +19° 39′ 30.2694″[1]
Apparent magnitude (V) 5.562[2]
Characteristics
Spectral type F9 IIIa[3] or G0 IV[4]
B−V color index −0.70[2]
Astrometry
Radial velocity (Rv)−6.6±2.1[5] km/s
Proper motion (μ) RA: −6.064[1] mas/yr
Dec.: +8.887[1] mas/yr
Parallax (π)7.5011 ± 0.1014 mas[1]
Distance435 ± 6 ly
(133 ± 2 pc)
Absolute magnitude (MV)+3.38[6]
Details
Mass2.8[7] M☉
Radius10.29+1.20
−0.20[1] R☉
Luminosity95.5±1.6[1] L☉
Surface gravity (log g)4.16±0.17[8] cgs
Temperature6,554+143
−85[8] K
Metallicity [Fe/H]+0.88±0.21[8] dex
Rotation9 d[7]
Rotational velocity (v sin i)87.7±4.4[6] km/s
Other designations
ψ3 Psc, 81 Piscium, BD+18° 153, HD 6903, HIP 5454, HR 339, SAO 92283[9]
Database references
SIMBADdata

Psi3 Piscium, which is Latinized from ψ3 Piscium, is a solitary,[10] yellow-hued star in the zodiac constellation of Pisces. It is faintly visible to the naked eye, having an apparent visual magnitude of 5.562.[2] Based upon an annual parallax shift of 7.5 mas as seen from Earth,[1] it is located about 435 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction factor of 0.33 due to interstellar dust.[4] The star is drifting closer to the Sun with a radial velocity of −7 km/s.[5]

This F-type giant is a candidate horizontal branch[8] star with a stellar classification of F9 IIIa.[3] It is an X-ray source with a luminosity of (0.82±0.13)×1030 erg s−1 in the 0.3−10 keV band.[7] The projected rotational velocity is 87.7±4.4 km/s and it has an effective temperature of 6,273.[6] It has 2.8[7] times the mass of the Sun and 10.3[1] times the Sun's radius. The star is radiating 95.5[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 6,554 K.[8]

  1. ^ a b c d e f g h i j Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Hog2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Keenan1989 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference vanBelle2008 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference deBruijne2012 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Reiners2006 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Gondoin2005 was invoked but never defined (see the help page).
  8. ^ a b c d e Cite error: The named reference Behr2003 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).