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Rho Piscium
Star in the constellation Pisces / From Wikipedia, the free encyclopedia
Rho Piscium (ρ Piscium) is a solitary,[12] yellow-hued star in the zodiac constellation of Pisces. With an apparent visual magnitude of +5.34,[2] it is faintly visible to the naked eye. Based upon an annual parallax shift of 39.66 mas as seen from Earth,[1] it is located 82 light years from the Sun. It is a member of the thin disk population of the Milky Way.[9]
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Pisces |
Right ascension | 01h 26m 15.26209s[1] |
Declination | +19° 10′ 20.4526″[1] |
Apparent magnitude (V) | +5.344[2] |
Characteristics | |
Spectral type | F2 V[3] |
B−V color index | +0.374[2] |
Astrometry | |
Radial velocity (Rv) | −7.7±1.0[4] km/s |
Proper motion (μ) | RA: −26.89[1] mas/yr Dec.: +11.12[1] mas/yr |
Parallax (π) | 39.66 ± 0.25 mas[1] |
Distance | 82.2 ± 0.5 ly (25.2 ± 0.2 pc) |
Absolute magnitude (MV) | +3.34[5] |
Details | |
Mass | 1.31[6] M☉ |
Radius | 1.1[7] R☉ |
Luminosity | 3.6[8] L☉ |
Surface gravity (log g) | 4.41±0.14[6] cgs |
Temperature | 6,822±232[6] K |
Metallicity [Fe/H] | −0.31[9] dex |
Rotational velocity (v sin i) | 60.1[10] km/s |
Age | 778[6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
This is an F-type main sequence star with a stellar classification of F2 V.[3] It is a suspected variable star that ranges in magnitude from a maximum of 5.35 to a minimum of 5.44 magnitude.[13] The star is a source of X-ray emission with a luminosity of 117.6×1020 W.[14] It is 778[6] million years old and is spinning with a projected rotational velocity of 60.1 km/s.[10] The star has 1.3[6] times the mass of the Sun and about 1.1[7] times the Sun's radius. It is radiating 3.6[8] times the Sun's luminosity from its photosphere at an effective temperature of 6,822 K.[6]