Pi Piscium
| |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 01h 37m 05.9167s |
| Declination | +12° 08′ 29.525″ |
| Apparent magnitude (V) | 5.60[2] |
| Characteristics | |
| Spectral type | F0V |
| U−B color index | +0.032 |
| B−V color index | +0.353 |
| Astrometry | |
| Radial velocity (Rv) | -1.0[2] km/s |
| Proper motion (μ) | RA: -74.90 mas/yr Dec.: 9.96 mas/yr |
| Parallax (π) | 29.58 ± 1.42 mas |
| Distance | 110 ± 5 ly (34 ± 2 pc) |
| Absolute magnitude (MV) | 2.94[2] |
| Details | |
| Surface gravity (log g) | 4.00[2] cgs |
| Temperature | 6,850[2] K |
| Rotational velocity (v sin i) | 105.9[2] km/s |
| Other designations | |
Pi Piscium (Pi Psc, π Piscium, π Psc) is a star approximately 110 light years away from Earth, in the constellation Pisces. It is a yellowish white star of the spectral type F0V, meaning it possesses a surface temperature of 6,000 to 7,500 kelvins, and is approximately the same size as the Sun, yet brighter and hotter in surface temperature. It has a rotational velocity of about 96 kilometers per second at its equator.[3] It is a variable star.[1]
Naming
In Chinese, 右更 (Yòu Gèng), meaning Official in Charge of the Pasturing, refers to an asterism consisting of refers to an asterism consisting of π Piscium, η Piscium, ρ Piscium, ο Piscium and 104 Piscium. Consequently, π Piscium itself is known as 右更三 (Yòu Gèng sān, English: the Third Star of Official in Charge of the Pasturing.)[4]
References
- 1 2 "Simbad Query Result". Simbad. Retrieved October 1, 2007.
- 1 2 3 4 5 6 Paunzen, E.; et al. (July 2014), "Investigating the possible connection between λ Bootis stars and intermediate Population II type stars", Astronomy & Astrophysics, 567: 8, arXiv:1406.3936
, Bibcode:2014A&A...567A..67P, doi:10.1051/0004-6361/201423817, A67. - ↑ "VizieR Detailed Page". Retrieved October 1, 2007.
- ↑ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 19 日