Zeta Volantis

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]
Distance145.4 ± 0.6 ly
(44.6 ± 0.2 pc)[1]
Absolute magnitude (MV)+0.75[4]
Details[2]
Mass1.224±0.155 M☉
Radius10.677±0.255 R☉
Luminosity60[1] L☉
Surface gravity (log g)2.82±0.09 cgs
Temperature4,788±37 K
Metallicity [Fe/H]−0.17±0.03 dex
Age5.1±1.515 Gyr
Other designations
ζ Vol, CPD−72°627, FK5 297, HD 63295, HIP 37504, HR 3024, SAO 256438[5]
Database references
SIMBADdata

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]

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]

  1. ^ a b c d e f g h i Cite error: The named reference DR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference Gomes2021 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1979 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference aa575_A35 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference csiro was invoked but never defined (see the help page).