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HD 66920

HD 66920
Observation data
Epoch J2000      Equinox J2000
Constellation Volans
Right ascension 07h 59m 15.7648s[1]
Declination −73° 14′ 39.0155″[1]
Apparent magnitude (V) 6.33±0.01[2]
Characteristics
Evolutionary stage main sequence[1]
Spectral type A3 V[3]
U−B color index +0.13[4]
B−V color index +0.14[4]
Astrometry
Radial velocity (Rv)23.8±1.7[5] km/s
Proper motion (μ) RA: −5.984 mas/yr[1]
Dec.: −20.295 mas/yr[1]
Parallax (π)7.6204 ± 0.0251 mas[1]
Distance428 ± 1 ly
(131.2 ± 0.4 pc)
Absolute magnitude (MV)+0.76[6]
Details
Mass2.33[7] M☉
Radius3.53+0.13
−0.11[8] R☉
Luminosity42±2[9] L☉
Surface gravity (log g)3.65±0.08[8] cgs
Temperature8,247±95[10] K
Metallicity [Fe/H]−0.01[11] dex
Age711[1] Myr
Other designations
20 G. Volantis[12], CD−72°431, CPD−72°654, GC 10898, HD 66920, HIP 39041, HR 3171, SAO 256463[13]
Database references
SIMBADdata

HD 66920, also known as HR 3171, is a solitary, white hued star located in the southern circumpolar constellation Volans, the flying fish. It has an apparent magnitude of 6.33,[2] placing it near the limit for naked eye visibility. Based on parallax measurements from the Gaia spacecraft, the star is estimated to be 428 light years distant.[1] It appears to be receding from the Solar System, having a heliocentric radial velocity of 23.8 km/s.[5] Pauzen et al. (2001) listed it as a λ Boötis star,[3] but is now considered a non member.[14]

HD 66920 has a classification of A3 V,[3] indicating that it is an ordinary A-type main-sequence star. Although it has been classified as a giant star (III),[15] HR 3171 is still on the main sequence[1] (according to Gaia DR3 models). It has 2.33 times the mass of the Sun and an enlarged radius of 3.53 R☉.[8] It radiates 42 times the luminosity of the Sun[9] from its enlarged photosphere at an effective temperature of 8,247 K.[10] HD 66920 has a solar metallicity,[11] and is estimated to be 711 million years old.[1]

  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 Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Paunzen2001 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Gontch2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference XHIP was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Kervella2021 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Murphy2016 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Paunzen2006 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Gontcharov2012 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Murphy2015 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
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