HD 63399

HD 63399
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Puppis
Right ascension 07h 47m 14.59403s[1]
Declination −36° 04′ 24.9619″[1]
Apparent magnitude (V) 6.45±0.01[2]
Characteristics
Evolutionary stage red giant branch[3]
Spectral type K1 III[4]
U−B color index +1.13[5]
B−V color index +1.12[5]
Astrometry
Radial velocity (Rv)28.5±0.2[6] km/s
Proper motion (μ) RA: −35.000 mas/yr[1]
Dec.: +26.931 mas/yr[1]
Parallax (π)7.3283 ± 0.0162 mas[1]
Distance445.1 ± 1.0 ly
(136.5 ± 0.3 pc)
Absolute magnitude (MV)+0.78[7]
Details
Mass1.29[8] or 1.7+1.3
−0.8[9] M☉
Radius10.79[10] R☉
Luminosity54.8±0.3[6] L☉
Surface gravity (log g)2.47[8] cgs
Temperature4,761±77[11] K
Metallicity [Fe/H]−0.06[3] dex
Other designations
CD−35°3874, CPD−35°1579, GC 10510, HD 63399, HIP 37996, SAO 198437[12]
Database references
SIMBADdata

HD 63399 is an orange hued star located in the southern constellation Puppis, the poop deck. It has an apparent magnitude of 6.45,[2] placing it near the limit for naked eye visibility. Based on parallax measurements from Gaia DR3,[1] the object is estimated to be 445 light years distant. It appears to be receding with a spectroscopic radial velocity of 28.5 km/s.[6] At its current distance, HD 63399 is diminished by 0.29 magnitudes due to interstellar dust.[13]

HD 63399 is a red giant star that is currently on the red giant branch,[3] fusing hydrogen in a shell around its core. It has a stellar classification of K1 III.[4] At present it has a mass ranging from 1.3 to 1.7 times the mass of the Sun,[8][9] depending on the study. HD 63399 has expanded to 10.8 times its girth[10] and now radiates 54.8 times the luminosity of the Sun[6] from its photosphere at an effective temperature of 4,761 K.[11] The star has an iron abundance 13% below solar levels, making it slightly metal deficient.[3]

  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 c d Cite error: The named reference Cardiel2021 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. ^ a b Cite error: The named reference Pickles2010 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference XHIP was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Anders2022 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Charbonnel2020 was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Kervella2021 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Bai2019 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 Gontcharov2017 was invoked but never defined (see the help page).