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 |
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]
References
[edit | edit source]- ^ a b c d e f g h i j k Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). Gaia DR2 record for this source at VizieR.
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
