HD 94717

HD 94717
Location of HD 94717 on the map (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Chamaeleon
Right ascension 10h 52m 28.63166s[1]
Declination −79° 33′ 33.9765″[1]
Apparent magnitude (V) 6.34±0.01[2]
Characteristics
Spectral type K2 II/III[3]
U−B color index +1.57[4]
B−V color index +1.46[4]
Astrometry
Radial velocity (Rv)3.4±0.5[5] km/s
Proper motion (μ) RA: −11.341 mas/yr[1]
Dec.: +1.655 mas/yr[1]
Parallax (π)1.8682 ± 0.021 mas[1]
Distance1,750 ± 20 ly
(535 ± 6 pc)
Absolute magnitude (MV)−2.10[6]
Details
Mass6.3±0.7[7] M☉
Radius77.8±3.9[8] R☉
Luminosity1,847+46
−49[1] L☉
Surface gravity (log g)1.47±0.04[1] cgs
Temperature4,446±122[9] K
Metallicity [Fe/H]−0.01[1] dex
Rotational velocity (v sin i)2.4±1.3[10] km/s
Age63±20[7] Myr
Other designations
28 G. Chamaeleontis[11], CD−78°438, CPD−78°589, GC 14988, HD 94717, HIP 53151, HR 4268, SAO 256768[12]
Database references
SIMBADdata

HD 94717, also known as HR 4268, is a solitary orange hued star located in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude of 6.34,[2] placing it near the limit for naked eye visibility. The object is located relatively far at a distance of 1,750 light years based on Gaia DR3 parallax measurements,[1] but it is receding with a heliocentric radial velocity of 3.4 km/s.[5] At its current distance, HD 94717's brightness is diminished by 0.62 magnitudes due to interstellar dust.[13]

HD 94717 has a stellar classification of K2 II/III,[3] indicating that it is an evolved red giant with the blended luminosity class of a giant star and a bright giant. It is estimated to be 63 million years old,[7] enough time for it to cool and expand to 78 times the Sun's radius.[8] It has 6.3 times the mass of the Sun[7] and radiates 1,847 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 4,446 K.[9] HD 94717 has a solar metallicity[1] and spins modestly with a projected rotational velocity of 2.4 km/s.[10]

  1. ^ a b c d e f g h i j 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 Corbally1984 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference Tetzlaff2011 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 Cite error: The named reference Stassun2019 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference DeMed2014 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 Guarinos1995 was invoked but never defined (see the help page).