HD 76236

HD 76236
Location of HD 76236 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Chamaeleon
Right ascension 08h 45m 55.14862s[1]
Declination −79° 30′ 15.7456″[1]
Apparent magnitude (V) 5.77±0.01[2]
Characteristics
Spectral type K5 III[3]
U−B color index +1.96[4]
B−V color index +1.60[4]
Astrometry
Radial velocity (Rv)7±0.4[5] km/s
Proper motion (μ) RA: −27.042[1] mas/yr
Dec.: +81.026[1] mas/yr
Parallax (π)5.3327 ± 0.049 mas[1]
Distance612 ± 6 ly
(188 ± 2 pc)
Absolute magnitude (MV)−0.13[6]
Details
Mass1.78±0.09[7] M☉
Radius53.1±2.7[8] R☉
Luminosity950+160
−60[1] L☉
Surface gravity (log g)1.18[9] cgs
Temperature3,989±122[10] K
Metallicity [Fe/H]+0.27[9] dex
Rotational velocity (v sin i)3±1.1[11] km/s
Other designations
11 G. Chamaeleontis[12], CPD−79°352, GC 12194, HD 76236, HIP 43012, HR 3543, SAO 256552[13]
Database references
SIMBADdata

HD 76236, also designated as HR 3543 or rarely 11 G. Chamaeleontis,[12] is a solitary star[14] located in the southern circumpolar constellation Chamaeleon. It is faintly visible to the naked eye as an orange-hued star with an apparent magnitude of 5.77.[2] Based on parallax measurements from the Gaia satellite, the object is estimated to be 612 light years away.[1] Currently, it is receding with a heliocentric radial velocity of 7 km/s.[5] At its current distance, HD 76236's brightness is diminished by 0.39 magnitudes due to interstellar dust.[15] It has an absolute magnitude of −0.13.[6]

This is an evolved red giant with a stellar classification K5 III.[3] It has 1.78 times the mass of the Sun[7] and an enlarged radius of 53.1 R☉.[8] It radiates 950 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 3,989 K.[10] HD 76236 has an iron abundance nearly twice of the Sun's,[9] making it metal enriched. It spins modestly with a projected rotational velocity of 3 km/s. An infrared excess has been detected around HD 76236, indicating that the star may have a circumstellar disk.[16][17]

  1. ^ a b c d e f g h 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 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. ^ a b Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Kervella2021 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Kervella2004 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Anders2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference De Medeiros2014 was invoked but never defined (see the help page).
  12. ^ a b 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 Eggleton2008 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Gontcharov2017 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Zuckerman1995 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Plets1997 was invoked but never defined (see the help page).