Gamma Chamaeleontis, Latinized from γ Chamaeleontis, is a solitary[9] star located in the southern circumpolar constellation of Chamaeleon. It can faintly be seen with the naked eye on a dark night, having an apparent visual magnitude of 4.12.[2] Based upon an annual parallax shift of 7.81 mas,[1] it is located around 418 light years from the Sun.
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Chamaeleon |
Right ascension | 10h 35m 28.10720s[1] |
Declination | −78° 36′ 28.0321″[1] |
Apparent magnitude (V) | 4.12[2] |
Characteristics | |
Spectral type | K5 III[3] |
U−B color index | +1.94[2] |
B−V color index | +1.57[2] |
Astrometry | |
Radial velocity (Rv) | −22.4[4] km/s |
Proper motion (μ) | RA: −37.61[1] mas/yr Dec.: +11.08[1] mas/yr |
Parallax (π) | 7.81 ± 0.12 mas[1] |
Distance | 418 ± 6 ly (128 ± 2 pc) |
Absolute magnitude (MV) | −1.43[5] |
Details | |
Radius | 67[6] R☉ |
Luminosity | 864[7] L☉ |
Temperature | 4,035[7] K |
Other designations | |
Database references | |
SIMBAD | data |
This is an evolved K-type giant star with a stellar classification of K5 III.[3] The measured angular diameter, after correction for limb darkening, is 4.86±0.05 mas.[10] At the estimated distance of the star, this yields a physical size of about 67 times the radius of the Sun.[6] It is a suspected variable star, with an amplitude of 0.01 magnitude.[11] The star radiates 864 times the solar luminosity from its outer atmosphere with an effective temperature of 4,053 K.[7]
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