HD 83380

HD 83380
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Antlia
Right ascension 09h 37m 09.89308s[1]
Declination −32° 10′ 43.2374″[1]
Apparent magnitude (V) 5.62[2]
Characteristics
Evolutionary stage red giant branch[3]
Spectral type K1 III[4]
B−V color index +1.02[5]
Astrometry
Radial velocity (Rv)−2.6±0.6[6] km/s
Proper motion (μ) RA: +27.757[1] mas/yr
Dec.: −15.640[1] mas/yr
Parallax (π)10.4548 ± 0.0533 mas[1]
Distance312 ± 2 ly
(95.6 ± 0.5 pc)
Absolute magnitude (MV)+0.69[7]
Details[7]
Mass2.17±0.11 M☉
Radius10.3±0.2 R☉
Luminosity55.2±1.6 L☉
Surface gravity (log g)2.9±0.1 cgs
Temperature4,905±42 K
Metallicity [Fe/H]+0.10±0.03 dex
Rotational velocity (v sin i)<1.4[8] km/s
Other designations
17 G. Antliae[9], CD−31°7458, CPD−31°2797, FK5 1248, HD 83380, HIP 47199, HR 3833, SAO 200561[10]
Database references
SIMBADdata

HD 83380 (HR 3833) is an orange-hued star in the southern constellation of Antlia. It shines faintly with a apparent magnitude of 5.62[2] when viewed in ideal conditions. Parallax measurements place the object at distance of 312 light-years.[1] It has a heliocentric radial velocity of −2.6 km/s,[6] indicating that it is drifting towards the Solar System.

HD 83380 has a stellar classification of K1 III,[4] indicating that it is an evolved red giant. Gaia DR3 stellar evolution models place the object on the red giant branch.[3] At present it has 2.17 times the mass of the Sun and an enlarged radius of 10.3 R☉.[7] It shines with a luminosity 55 times greater than the Sun from its photosphere at an effective temperature of 4,905 K.[7] HD 83380 is slightly metal enriched with a metallicity 126% that of the Sun.[7] It spins with a projected rotational velocity too low to be measured accurately,[8] and is believed to be a member of the thin disk population.[11]

The multiplicity status of HD 83380 isn't generally agreed on. De Mederios et al. (2014) found it to be a probable spectroscopic binary[8] while Eggleton and Tokovinin (2008) list it as a solitary star.[12]

  1. ^ a b c d e f Cite error: The named reference edr3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference DR3 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. ^ a b c d e Cite error: The named reference Ottoni2022 was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference DeMederios2014 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Gould1879 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 Eggen1989 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).