Zeta Piscis Austrini

Zeta Piscis Austrini, Latinized from ζ Piscis Austrini, is an orange-hued star in the southern constellation of Piscis Austrinus. It has an apparent visual magnitude of +6.43, which is near the lower limit of stars that can be seen with the naked eye. Based upon an annual parallax shift of 7.55 mas as seen from the Gaia telescope, the star is located 410±1 light years from the Sun.^[2] This is an evolved K-type giant star with a stellar classification of K1 III.^[4] It is a suspected variable star.^[8]

Zeta Piscis Austrini

Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Piscis Austrinus[1]
Right ascension	22h 30m 53.77310s[2]
Declination	−26° 04′ 25.5041″[2]
Apparent magnitude (V)	+6.43[3]
Characteristics
Spectral type	K1 III[4]
B−V color index	+1.08[3]
Astrometry
Radial velocity (Rv)	−23.40±0.12[2] km/s
Proper motion (μ)	RA: +40.647[2] mas/yr Dec.: −74.044[2] mas/yr
Parallax (π)	7.9457±0.0243 mas[2]
Distance	410 ± 1 ly (125.9 ± 0.4 pc)
Absolute magnitude (MV)	+0.83[1]
Details
Mass	2.9[2] M☉
Radius	11[2] R☉
Luminosity	50[2] L☉
Surface gravity (log g)	2.50[2] cgs
Temperature	4,732[2] K
Metallicity [Fe/H]	−0.09[5] dex
Rotational velocity (v sin i)	1.6[6] km/s
Age	410[2] Myr
Other designations
ζ PsA, NSV 14180, CD−26°16175, CPD−26°7379, FK5 5986, HD 213296, HIP 111138, HR 8570, SAO 191196[7]
Database references
SIMBAD	data