HD 75116

HD 75116
Observation data
Epoch J2000      Equinox J2000
Constellation Volans
Right ascension 08h 43m 54.32871s[1]
Declination −68° 12′ 41.7018″[1]
Apparent magnitude (V) 6.31±0.01[2]
Characteristics
Evolutionary stage red giant branch[1]
Spectral type K3 III:[3]
U−B color index +1.78[4]
B−V color index +1.50[4]
Astrometry
Radial velocity (Rv)−17.5±0.4[5] km/s
Proper motion (μ) RA: +1.359 mas/yr[1]
Dec.: +25.545 mas/yr[1]
Parallax (π)3.5061 ± 0.0178 mas[1]
Distance930 ± 5 ly
(285 ± 1 pc)
Absolute magnitude (MV)−0.93[6]
Details
Mass2.29±0.11 [7] M☉
Radius52.2[8] R☉
Luminosity431±7[9] L☉
Surface gravity (log g)1.08[10] cgs
Temperature4,124±122[11] K
Rotational velocity (v sin i)<1[12] km/s
Other designations
40 G. Volantis[13], CD−67°666, CPD−67°990, GC 12074, HD 75116, HIP 42850, HR 3491, SAO 250315[14]
Database references
SIMBADdata

HD 75116, also known as HR 3491, is a solitary, orange hued star in the southern circumpolar constellation Volans, the flying fish. It has an apparent magnitude of 6.31,[2] placing it near the limit for naked eye visibility. Parallax measurements from the Gaia spacecraft place the star relatively far at a distance of 930 light years.[1] It appears to be approaching the Solar System, having a heliocentric radial velocity of −17.5 km/s.[5]

This is a red giant with a spectral classification of K3 III:,[3] but there is uncertainty behind the class. Gaia Data Release 3 stellar evolution models place it on the red giant branch. It has 2.29 times the Sun’s mass[7] but has expanded to 52.2 times its girth.[8] HD 75116 radiates 431 times the luminosity of the Sun[9] from its swollen photosphere at an effective temperature of 4,124 K.[11] It rotates slowly like many giant stars, having a projected rotational velocity <1 km/s.[12]

  1. ^ a b c d e f 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 Houk1975 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 Gontcharov2006 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. ^ a b Cite error: The named reference Kervlla2019 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2021 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference mcdonald2017 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference DeMed2014 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Gould1879 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).