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]

ι Piscis Austrini

Location of ι Piscis Austrini (circled)
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
ι PsA, 9 Piscis Austrini, CPD−33° 6184, FK5 814, HD 206742, HIP 107380, HR 8305, SAO 213258, WDS J21449-3302A[6]
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 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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[ru] Йота Южной Рыбы