Kappa Chamaeleontis

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]
Distance490 ± 10 ly
(150 ± 4 pc)
Absolute magnitude (MV)−0.78[5]
Details
Mass1.4[6] M☉
Radius46.12[1] R☉
Luminosity485.7[1] L☉
Temperature3,990[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
SIMBADdata

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]

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]

  1. ^ a b c d e f g h i j k Cite error: The named reference dr2 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference TYC2 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference deMedeiros was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Johnson was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Chandler was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference koen2002 was invoked but never defined (see the help page).