HD 102350

HD 102350
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 11h 46m 30.82257s[1]
Declination −61° 10′ 42.2364″[1]
Apparent magnitude (V) 4.11[2]
Characteristics
Spectral type G0II[3] or G5Ib/II[4]
B−V color index 0.895±0.008[2]
Variable type suspected δ Cep[5]
Astrometry
Radial velocity (Rv)−3.4±0.7[2] km/s
Proper motion (μ) RA: −21.87±0.16[1] mas/yr
Dec.: −16.41±0.15[1] mas/yr
Parallax (π)8.37 ± 0.17 mas[1]
Distance390 ± 8 ly
(119 ± 2 pc)
Absolute magnitude (MV)−1.51[6]
Details
Radius21.96+1.70
−3.27[7] R☉
Luminosity282.8±9.0[7] L☉
Temperature5,051+424
−185[7] K
Other designations
NSV 5325, CD−60°3741, FK5 443, HD 102350, HIP 57439, HR 4522, SAO 251579, WDS J11465-6111A[8]
Database references
SIMBADdata

HD 102350 is a single[9] star in the constellation Centaurus. It has a yellow hue and is visible to the naked eye with an apparent visual magnitude of 4.11.[2] The distance to this star is approximately 390 light years based on parallax, but it is drifting closer with a radial velocity of −3 km/s.[2] It has an absolute magnitude of −1.51.[6]

This is an aging bright giant star with a stellar classification of G0II.[3] It is a candidate Cepheid variable,[5] but Hipparcos photometry found its brightness to be constant.[10] The star has expanded to 22[7] times the radius of the Sun and is radiating 283[7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,051 K.[7] It has a magnitude 13.0 visual companion at an angular separation of 24.3″ along a position angle of 313° relative to the brighter component, as of 2000.[11]

HD 102350 is listed in the Washington Double Star Catalog as having a 13th magnitude companion about 25″ away,[12] but it is a distant background object unrelated to HD 102350.[13][9]

  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 Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Tetzlaff2011 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Houk1979 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Cardini2005 was invoked but never defined (see the help page).
  7. ^ a b c d e f Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference adelman2001 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference WDSC2014 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference wds was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference dr2b was invoked but never defined (see the help page).