Zeta Volantis

Zeta Volantis, Latinized from ζ Volantis, is a binary star^[6] system in the southern constellation of Volans. It has an apparent visual magnitude of 3.92,^[2] 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″.^[6] 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.^[7] It is currently moving away with a radial velocity of 48 km/s.^[1]

ζ Volantis

Location of ζ Volantis
Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Volans
Right ascension	07h 41m 49.2590s[1]
Declination	−72° 36′ 21.957″[1]
Apparent magnitude (V)	3.918±0.003 [2]
Characteristics
Evolutionary stage	Giant star
Spectral type	K0 III[3]
B−V color index	1.029±0.004[2]
Astrometry
Radial velocity (Rv)	48.5±0.14[1] km/s
Proper motion (μ)	RA: +36.179 mas/yr[1] Dec.: +14.816 mas/yr[1]
Parallax (π)	22.4377±0.0947 mas[1]
Distance	145.4 ± 0.6 ly (44.6 ± 0.2 pc)[1]
Absolute magnitude (MV)	+0.75[4]
Details[2]
Mass	1.224±0.155 M☉
Radius	10.677±0.255 R☉
Luminosity	60[1] 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[5]
Database references
SIMBAD	data

The primary component is K-type giant star with a stellar classification of K0 III.^[3] It has a derived luminosity of around 60 times that of the Sun,^[1] 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.^[2] The expanded outer envelope has an effective temperature of 4,788 K,^[2] giving it the orange glow of a K-type star.^[8]