HD 34266

HD 34266
Location of HD 34266 (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Columba
Right ascension 05h 14m 28.84578s[1]
Declination −35° 58′ 37.1904″[1]
Apparent magnitude (V) 5.73±0.01[2]
Characteristics
Evolutionary stage Red giant branch[3]
Spectral type G8 III[4]
B−V color index +1.01[5]
Astrometry
Radial velocity (Rv)13.2±2.9[6] km/s
Proper motion (μ) RA: +11.005 mas/yr[1]
Dec.: +13.944 mas/yr[1]
Parallax (π)6.046 ± 0.0316 mas[1]
Distance539 ± 3 ly
(165.4 ± 0.9 pc)
Absolute magnitude (MV)−0.16[7]
Details[8]
Mass3.42±0.14 M☉
Radius16.2±0.4 R☉
Luminosity144±4 L☉
Surface gravity (log g)2.68±0.12 cgs
Temperature4,970±49 K
Metallicity [Fe/H]+0.04±0.04 dex
Rotational velocity (v sin i)2.3±1.2[9] km/s
Age490[10] Myr
Other designations
6 G. Columbae[11], CD−36°2127, CPD−36°676, GC 6421, HD 34266, HIP 24426, HR 1721, SAO 195683[12]
Database references
SIMBADdata

HD 34266, also known as HR 1721 is a solitary,[13] yellow hued star located in the southern constellation Columba, the dove. It has an apparent magnitude of 5.73,[2] making it faintly visible to the naked eye under ideal conditions. Based on Gaia DR3 parallax measurements, the object is located 539 light years away.[1] It appears to be drifting away from the Solar System, having a heliocentric radial velocity of 13.2 km/s.[6]

This is an evolved giant star that is currently on the red giant branch,[3] fusing hydrogen in a shell around an inert helium core. It has a stellar classification of G8 III.[4] HD 34266 is calculated to be 490 million years old,[10] almost 10 times younger than the Sun. However, it already left the main sequence due to a mass of 3.42 M☉.[8] HD 34266 has expanded to 16.2 times the Sun's girth and now radiates 144 times the luminosity of the Sun from its photosphere at an effective temperature of 4,970 K.[8] HD 34266 has a near solar metallicity and spins modestly with a projected rotational velocity of 2.3 km/s.[9]

  1. ^ a b c d e Cite error: The named reference GaiaDR3 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 Jones2011 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Houk1982 was invoked but never defined (see the help page).
  5. ^ 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 Cite error: The named reference Ottoni2022 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference De Medeiros2014 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Dotter2008 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).
  12. ^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).