Iota Piscis Austrini
Star in the constellation Piscis Austrinus From Wikipedia, the free encyclopedia
Iota Piscis Austrini (ι Piscis Austrini) is a solitary,[7] blue-white hued star in the southern constellation of Piscis Austrinus. It has an apparent visual magnitude of +4.35[2] and is around 500 light years from the Sun. This is an A-type main sequence star with a stellar classification of A0 V.[3] It has a magnitude 11.4 visual companion located at an angular separation of 20 arc seconds along a position angle of 290°, as of 1910.[8]
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Piscis Austrinus |
| Right ascension | 21h 44m 56.809s[1] |
| Declination | −33° 01′ 32.82″[1] |
| Apparent magnitude (V) | +4.35[2] |
| Characteristics | |
| Spectral type | A0 V[3] or A0 III-IV[4] |
| U−B color index | −0.11[2] |
| B−V color index | −0.05[2] |
| Astrometry | |
| Proper motion (μ) | RA: +31.10[1] mas/yr Dec.: −94.56[1] mas/yr |
| Parallax (π) | 15.97 ± 0.17 mas[1] |
| Distance | 204 ± 2 ly (62.6 ± 0.7 pc) |
| Absolute magnitude (MV) | +0.37[4] |
| Details | |
| Luminosity | 87[4] L☉ |
| Temperature | 9,330[5] K |
| Rotational velocity (v sin i) | 50[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
Iota Piscis Austrini is moving through the Galaxy at a speed of 29.7 km/s relative to the Sun. Its projected Galactic orbit carries it between 18,400 and 24,300 light years from the center of the Galaxy.[9][unreliable source?]
Naming
In Chinese, 天錢 (Tiān Qián), meaning Celestial Money, refers to an asterism consisting of ι Piscis Austrini, 13 Piscis Austrini, θ Piscis Austrini, μ Piscis Austrini and τ Piscis Austrini. Consequently, the Chinese name for ι Piscis Austrini itself is 天錢三 (Tiān Qián sān, English: the Third Star of Celestial Money.)[10]
References
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