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]
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 | |
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]