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Gamma Volantis

γ Volantis
Location of γ Volantis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Volans
γ1 Vol
Right ascension 07h 08m 42.3703s[1]
Declination −70° 29′ 49.527″[1]
Apparent magnitude (V) 5.704[2]
γ2 Vol
Right ascension 07h 08m 44.8657s[3]
Declination −70° 29′ 56.149″[3]
Apparent magnitude (V) 3.62[4]
Characteristics
Spectral type F2V + K0III[5]
Astrometry
γ1 Vol
Radial velocity (Rv)−3[6] km/s
Proper motion (μ) RA: 11.069(437)[1] mas/yr
Dec.: 107.302(577)[1] mas/yr
Parallax (π)22.7501 ± 0.4619 mas[1]
Distance143 ± 3 ly
(44.0 ± 0.9 pc)
Absolute magnitude (MV)2.51[7]
γ2 Vol
Radial velocity (Rv)+2.8[6] km/s
Proper motion (μ) RA: 23.620(154)[3] mas/yr
Dec.: 108.653(170)[3] mas/yr
Parallax (π)24.4775 ± 0.1130 mas[3]
Distance133.2 ± 0.6 ly
(40.9 ± 0.2 pc)
Details
γ1 Vol
Mass1.69[8] M☉
Surface gravity (log g)2.71[8] cgs
Temperature6,541[7] K
Metallicity [Fe/H]+0.12[2] dex
Rotational velocity (v sin i)4.4±0.2[7] km/s
Age1.4[2] Gyr
γ2 Vol
Mass2.15±0.07[9] M☉
Radius10.20±0.23[9] R☉
Luminosity53.7±1.6[9] L☉
Surface gravity (log g)2.74±0.095[9] cgs
Temperature4,892±41[9] K
Metallicity [Fe/H]0.054±0.03[9] dex
Other designations
γ Vol, CPD−70°600, FK5 1189[10][11]
γ1 Vol: HD 55864, HIP 34473, HR 2735, SAO 256373[10]
γ2 Vol: HD 55865, HIP 34481, HR 2736, SAO 256374[11]
Database references
SIMBADγ1 Vol
γ2 Vol
Sky over Paranal. γ Volantis is in the centre of the image, above (actually northeast of) the Large Magellanic Cloud.

Gamma Volantis, Latinized from γ Volantis, is a wide binary star[5] system in the southern constellation of Volans. Based upon parallax measurements, it is approximately 133 light years from Earth. It is bright enough to be seen with the naked eye and can be found around 9° to the east-southeast of the Large Magellanic Cloud.[12]

The brighter component, designated γ2 Volantis, is an orange K-type giant star with a stellar classification of K0 III and an apparent magnitude of +3.62, making this the brightest star in the constellation. Its companion, γ1 Volantis, is an F-type main-sequence star of classification F2 V and an apparent magnitude of +5.70. As of 2002, the pair were at an angular separation of 14.1″ along a position angle of 296°. Their separation has decreased from 15.7″ in 1826.[13] The secondary is a source of X-ray emission with a luminosity of 8.3×1028 erg s−1.[14]

  1. ^ a b c d e Cite error: The named reference Gaia EDR3 for γ1 Vol was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference cgssn09 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Gaia EDR3 for γ2 Vol was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference aass34_1 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference mnras389_2_869 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference gcsrv was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference AmmlerVonEiff2012 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Casagrande2011 was invoked but never defined (see the help page).
  9. ^ a b c d e f Cite error: The named reference ottoni was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference SIMBAD1 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference SIMBAD2 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Bakich2010 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Pizzolato2000 was invoked but never defined (see the help page).
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