| |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h26m 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 | |
ρ Psc, 93 Piscium, BD+18° 187, HD 8723, HIP 6706, HR 413, SAO 92436[11] | |
| Database references | |
| SIMBAD | data |
Rho Piscium (ρ Piscium) is a solitary,[12] yellow-hued star in the zodiac constellationofPisces. 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]
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]
InChinese, 右更 (Yòu Gèng), meaning Official in Charge of the Pasturing, refers to an asterism consisting of ρ Piscium, η Piscium, π Piscium, ο Piscium and 104 Piscium. Consequently, the Chinese name for ρ Piscium itself is 右更一 (Yòu Gèng yī, English: the First Star of Official in Charge of the Pasturing.)[15]
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