Kappa Capricorni

κ Capricorni
Location of κ Capricorni (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Capricornus
Right ascension 21h 42m 39.50710s[1]
Declination −18° 51′ 58.7669″[1]
Apparent magnitude (V) +4.73[2]
Characteristics
Spectral type G8 III[3]
U−B color index +0.51[2]
B−V color index +0.88[2]
Astrometry
Radial velocity (Rv)−2.87±0.18[4] km/s
Proper motion (μ) RA: +145.85[1] mas/yr
Dec.: −9.50[1] mas/yr
Parallax (π)11.09 ± 0.28 mas[1]
Distance294 ± 7 ly
(90 ± 2 pc)
Absolute magnitude (MV)−0.023[5]
Details[6]
Mass2.43±0.21 M☉
Radius13.28±0.47 R☉
Luminosity106.8±5.9 L☉
Surface gravity (log g)2.59±0.06 cgs
Temperature5,096±57 K
Metallicity [Fe/H]−0.39±0.10 dex
Rotational velocity (v sin i)0.0[4] km/s
Age1.19[7] Gyr
Other designations
κ Cap, 43 Cap, BD−19° 6152, HD 206453, HIP 107188, HR 8288, SAO 164593[8]
Database references
SIMBADdata

Kappa Capricorni (κ Cap, κ Capricorni) is a solitary[9] star in the constellation Capricornus. It is visible to the naked eye with an apparent visual magnitude of +4.73.[2] Based upon an annual parallax shift of 11.09 mas as seen from the Earth,[1] the star is located about 294 light years from the Sun.

This is a yellow-hued, evolved, G-type giant star with a stellar classification of G8 III.[3] There is a 91% probability that it is currently on the horizontal branch, rather than the red giant branch.[6] As such, it is a red clump[10] giant with an estimated 2.43 times the mass of the Sun and has expanded to 13.28 times the radius of the Sun.[6] The star is about 1.2[7] billion years old and has a projected rotational velocity that is too small to be measured.[4] It radiates 107 times the solar luminosity from its photosphere at an effective temperature of 5,096 K.[6]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference houk1988 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Massarotti2008 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Soubiran2008 was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Reffert2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference luck2015 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. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Alves2000 was invoked but never defined (see the help page).