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Psi3 Piscium
Star in the constellation Pisces / From Wikipedia, the free encyclopedia
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]
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] |
Distance | 435 ± 6 ly (133 ± 2 pc) |
Absolute magnitude (MV) | +3.38[6] |
Details | |
Mass | 2.8[7] M☉ |
Radius | 10.29+1.20 −0.20[1] R☉ |
Luminosity | 95.5±1.6[1] L☉ |
Surface gravity (log g) | 4.16±0.17[8] cgs |
Temperature | 6,554+143 −85[8] K |
Metallicity [Fe/H] | +0.88±0.21[8] dex |
Rotation | 9 d[7] |
Rotational velocity (v sin i) | 87.7±4.4[6] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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]