HD 163376

HD 163376
Observation data
Epoch J2000      Equinox J2000
Constellation Scorpius
Right ascension 17h 57m 47.80338s[1]
Declination −41° 42′ 58.6612″[1]
Apparent magnitude (V) 4.88[2]
Characteristics
Spectral type M0 III[3]
B−V color index 1.617±0.081[2]
Variable type suspected[4]
Astrometry
Radial velocity (Rv)4.4±2.8[2] km/s
Proper motion (μ) RA: −3.97±0.35[1] mas/yr
Dec.: −15.02±0.13[1] mas/yr
Parallax (π)7.22 ± 0.27 mas[1]
Distance450 ± 20 ly
(139 ± 5 pc)
Absolute magnitude (MV)−0.82[2]
Details
Mass1.12[5] M☉
Radius61+6
−7[6] R☉
Luminosity832±42[6] L☉
Surface gravity (log g)0.79[5] cgs
Temperature3,972+244
−194[6] K
Metallicity [Fe/H]+0.04[5] dex
Other designations
NSV 24051, CD−41°12231, HD 163376, HIP 87936, HR 6682, SAO 228578[7]
Database references
SIMBADdata

HD 163376 is a single[8] star in the southern constellation of Scorpius. It has a ruddy hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.88.[2] The distance to this star, as determined using parallax measurements, is approximately 450 light years. It is drifting further from the Sun with a radial velocity of about 4 km/s.[2] The absolute magnitude of this star is −0.82.[2]

This object is an aging red giant star with a stellar classification of M0 III,[3] having exhausted the supply of hydrogen at its core then cooled and expanded. At present it has a radius around 61 times the radius of the Sun.[6] It is a suspected variable star of unknown type, with a brightness that has been measured ranging from 4.94 down to 4.98.[4] The star is radiating 832 times the Sun's luminosity from its photosphere at an effective temperature of 3,972 K.[6]

  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d e f g Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1978 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference starhorse was invoked but never defined (see the help page).
  6. ^ a b c d e Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).