Zeta Pavonis

Zeta Pavonis, Latinized from ζ Pavonis, is an orange-hued star in the southern constellation Pavo. 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 14.93 mas as seen from Earth,^[1] which provides a distance estimate of approximately 420 light-years (130 parsecs) away from the Sun. 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 02.13528s[1]
Declination	−71° 25′ 41.2065″[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: +0.81[1] mas/yr Dec.: −158.15[1] mas/yr
Parallax (π)	14.93±0.18 mas[1]
Distance	218 ± 3 ly (67.0 ± 0.8 pc)
Absolute magnitude (MV)	−0.12[2]
Details
Radius	19[5] R☉
Luminosity	155[2] L☉
Rotational velocity (v sin i)	10.0[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. The measured angular diameter of this star, after correction for limb darkening, is 2.63±0.07 mas.^[8] At the estimated distance of this star, this yields a physical size of about 19 times the radius of the Sun.^[5] The star is radiating 155^[2] times the Sun's luminosity.

Zeta Pavonis has a companion, probably optical, of apparent magnitude 12.0 at about 55.6" separation.^[9][10]