Zeta Volantis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Volans |
| Right ascension | 07h 41m 49.2590s |
| Declination | −72° 36′ 21.957″ |
| Apparent magnitude (V) | 3.918±0.003 |
| Characteristics | |
| Evolutionary stage | Giant star |
| Spectral type | K0 III |
| B−V color index | 1.029±0.004 |
| Astrometry | |
| Radial velocity (Rv) | 48.5±0.14 km/s |
| Proper motion (μ) | RA: +36.179 mas/yr Dec.: +14.816 mas/yr |
| Parallax (π) | 22.4377±0.0947 mas |
| Distance | 145.4 ± 0.6 ly (44.6 ± 0.2 pc) |
| Absolute magnitude (MV) | +0.75 |
| Details | |
| Mass | 1.224±0.155 M☉ |
| Radius | 10.677±0.255 R☉ |
| Luminosity | 60 L☉ |
| Surface gravity (log g) | 2.82±0.09 cgs |
| Temperature | 4,788±37 K |
| Metallicity [Fe/H] | −0.17±0.03 dex |
| Age | 5.1±1.515 Gyr |
| Other designations | |
| ζ Vol, CPD−72°627, FK5 297, HD 63295, HIP 37504, HR 3024, SAO 256438 | |
| Database references | |
| SIMBAD | data |
Zeta Volantis, Latinized from ζ Volantis, is a binary star system in the southern constellation of Volans. It has an apparent visual magnitude of 3.92, which is bright enough to be seen with the naked eye. Based upon parallax measurements by the Gaia spacecraft, it is approximately 145 light-years (44.6 parsecs) from the Sun. The companion is a magnitude 9.7 star at an angular separation of 16.7″. Based upon their motion through space, this system made its perihelion passage some 858,000 years ago when it came within 22 ly (6.6 pc) of the Sun. It is currently moving away with a radial velocity of 48 km/s.
The primary component is K-type giant star with a stellar classification of K0 III. It has a derived luminosity of around 60 times that of the Sun, 1.2 times the Sun's mass and is about 5.1 billion years old. At this age, it has expanded to 10.7 times the Sun's size. The expanded outer envelope has an effective temperature of 4,788 K, giving it the orange glow of a K-type star.