Kappa Chamaeleontis

Kappa Chamaeleonitis, Latinized from κ Chamaeleonitis, is a single^[8] star in the southern constellation of Chamaeleon. It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.024.^[2] The distance to this object is approximately 490 light-years, based on the star's parallax.^[1] It is drifting closer with a radial velocity of -2 km/s.^[3]

Kappa Chamaeleontis

Observation data Epoch J2000      Equinox J2000
Constellation	Chamaeleon
Right ascension	12h 04m 46.47090s[1]
Declination	−76° 31′ 08.6272″[1]
Apparent magnitude (V)	5.024[2]
Characteristics
Spectral type	K4III[3]
U−B color index	+1.78[4]
B−V color index	+1.49[4]
Astrometry
Radial velocity (Rv)	−2.19±0.19[3] km/s
Proper motion (μ)	RA: -77.805[1] mas/yr Dec.: 45.837[1] mas/yr
Parallax (π)	6.6724±0.1927 mas[1]
Distance	490 ± 10 ly (150 ± 4 pc)
Absolute magnitude (MV)	−0.78[5]
Details
Mass	1.4[6] M☉
Radius	46.12[1] R☉
Luminosity	485.7[1] L☉
Temperature	3,990[1] K
Rotational velocity (v sin i)	<1.0[3] km/s
Other designations
κ Cha, CPD−75°777, HD 104902, HIP 58905, HR 4605, SAO 256899[7]
Database references
SIMBAD	data

This is an aging K-type giant star with a stellar classification of K4III,^[3] having exhausted the supply of hydrogen at its core then cooled and expanded to its current size of 46^[1] times the Sun's radius. It is a candidate periodic microvariable, with its brightness fluctuating by 0.005 magnitude at the rate of 0.25664 cycles per day.^[9] The star is 1.4^[6] times as massive as the Sun and is radiating 486 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,990 K.^[1]