Zeta Pavonis
Zeta Pavonis, Latinized from ζ Pavonis, is an orange-hued star in the southern constellation Pavo. Its apparent magnitude is 4.01, 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, 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. Based upon its motion through space, this star appears to be a member of the Hyades Supercluster.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Pavo |
| Right ascension | 18h 43m 02.13528s |
| Declination | −71° 25′ 41.2065″ |
| Apparent magnitude (V) | +4.01 |
| Characteristics | |
| Spectral type | K0III |
| U−B color index | +1.02 |
| B−V color index | +1.13 |
| Astrometry | |
| Radial velocity (Rv) | −16.30 km/s |
| Proper motion (μ) | RA: +0.81 mas/yr Dec.: −158.15 mas/yr |
| Parallax (π) | 14.93 ± 0.18 mas |
| Distance | 218 ± 3 ly (67.0 ± 0.8 pc) |
| Absolute magnitude (MV) | −0.12 |
| Details | |
| Radius | 19 R☉ |
| Luminosity | 155 L☉ |
| Rotational velocity (v sin i) | 10.0 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
This is an evolved K-type giant star with a stellar classification of K0 III, 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. At the estimated distance of this star, this yields a physical size of about 19 times the radius of the Sun. The star is radiating 155 times the Sun's luminosity.
Zeta Pavonis has a companion, probably optical, of apparent magnitude 12.0 at about 55.6" separation.