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Kappa Capricorni

Star in the constellation Capricornus

κ Capricorni

Location of κ Capricorni (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Capricornus
Right ascension	21h42m 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]
Distance	294 ± 7 ly (90 ± 2 pc)
Absolute magnitude (MV)	−0.023[5]
Details[6]
Mass	2.43±0.21 M☉
Radius	13.28±0.47 R☉
Luminosity	106.8±5.9 L☉
Surface gravity (log g)	2.59±0.06 cgs
Temperature	5,096±57 K
Metallicity [Fe/H]	−0.39±0.10 dex
Rotational velocity (v sin i)	0.0[4] km/s
Age	1.19[7] Gyr
Other designations
κ Cap, 43 Cap, BD−19° 6152, HD 206453, HIP 107188, HR 8288, SAO 164593[8]
Database references
SIMBAD	data

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]

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