HD 73468

HD 73468
Observation data
Epoch J2000      Equinox J2000
Constellation Volans
Right ascension 08h 32m 41.77s[1]
Declination −73° 21′ 24.44″[1]
Apparent magnitude (V) 6.10±0.01[2]
Characteristics
Evolutionary stage horizontal branch[3]
Spectral type G8 III[4]
U−B color index +0.65[5]
B−V color index +0.95[5]
Astrometry
Radial velocity (Rv)−26.5±0.4[6] km/s
Proper motion (μ) RA: −54.973 mas/yr[1]
Dec.: +73.054 mas/yr[1]
Parallax (π)7.7564 ± 0.0247 mas[1]
Distance420 ± 1 ly
(128.9 ± 0.4 pc)
Absolute magnitude (MV)+0.69[7]
Details[8]
Mass2.11±0.06 M☉
Radius10.24±0.16 R☉
Luminosity59±1 L☉
Surface gravity (log g)2.73±0.06 cgs
Temperature5,001±32 K
Metallicity [Fe/H]−0.09±0.03 dex
Rotational velocity (v sin i)2.1±1.3[9] km/s
Other designations
33 G. Volantis, CD−72°471, CPD−72°713, GC 11776, HD 73468, HIP 41907, HR 3417, SAO 256524[10][11]
Database references
SIMBADdata

HD 73468 (HR 3417) is a solitary star in the southern circumpolar constellation Volans. It is faintly visible to the naked eye with an apparent magnitude of 6.10,[2] and is estimated to be 420 light years away based on parallax measurements.[1] However, it is approaching the Solar System with a heliocentric radial velocity of −26.5 km/s.[6]

HD 73468 is a star with a classification of G8 III,[4] indicating that it is a giant star. It is currently on the horizontal branch[3] — generating energy via helium fusion in its core. HD 73468 has twice the mass of the Sun but has expanded to 10.24 times the radius of the Sun.[8] It shines with a luminosity of 59 L☉ from its swollen photosphere at an effective temperature of 5,001 K,[8] giving a yellow hue. HD 73468 is metal deficient with an iron abundance 81% that of the Sun[8] and spins with a projected rotational velocity of about 2.1 km/s.[9]

  1. ^ a b c d e Cite error: The named reference EDR3 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 Cite error: The named reference Laney2011 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Gontcharov2006 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  8. ^ a b c d Cite error: The named reference Ottoni2022 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference DeMederios2014 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).