Zeta Pavonis

Zeta Pavonis is an orange-hued star in the southern constellation Pavo. Its name is a Bayer designation that is Latinized from ζ Pavonis, and abbreviated Zeta Pav or ζ Pav. Its apparent magnitude is 4.01,^[2] which is bright enough to be faintly visible to the naked eye. The annual parallax shift of this star is 15.15 mas as seen from Earth,^[1] which provides a distance of 215 light-years (66 parsecs). It is moving closer to the Sun with a radial velocity of −16.30.^[4] Based upon its motion through space, this star appears to be a member of the Hyades Supercluster.^[7]

ζ Pavonis

Location of ζ Pavonis (circled)
Observation data Epoch J2000      Equinox J2000
Constellation	Pavo
Right ascension	18h 43m 02.13634s[1]
Declination	−71° 25′ 41.2162″[1]
Apparent magnitude (V)	+4.01[2]
Characteristics
Spectral type	K0III[2]
U−B color index	+1.02[3]
B−V color index	+1.13[2]
Astrometry
Radial velocity (Rv)	−16.30[4] km/s
Proper motion (μ)	RA: +1.186 mas/yr[1] Dec.: −158.496 mas/yr[1]
Parallax (π)	15.1495±0.1135 mas[1]
Distance	215 ± 2 ly (66.0 ± 0.5 pc)
Absolute magnitude (MV)	−0.12[2]
Details
Radius	18.47[5] R☉
Luminosity	133[5] L☉
Surface gravity (log g)	1.97±0.09[6] cgs
Temperature	4,514±50[6] K
Metallicity [Fe/H]	−0.44±0.04[6] dex
Rotational velocity (v sin i)	3.9±0.7[6] km/s
Other designations
ζ Pav, CPD−71°2353, FK5 698, GC 25522, HD 171759, HIP 91792, HR 6982, SAO 257620, CCDM J18430-7125A, WDS J18430-7126A
Database references
SIMBAD	data

This is an evolved K-type giant star with a stellar classification of K0 III,^[2] which indicates it has exhausted the supply of hydrogen at its core. This star has 19 times the radius of the Sun, radiating 133 solar luminosities from its photosphere^[5] at an effective temperature of 4,514 K. The metallicity of the star is subsolar.^[6]

Zeta Pavonis has a companion, probably optical, of apparent magnitude 12.0 at about 55.6" separation.^[8][9]