CT Chamaeleontis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 11h 04m 09.0989s |
| Declination | −76° 27′ 19.3269″ |
| Apparent magnitude (V) | 12.31 to 12.43 |
| Characteristics | |
| A | |
| Evolutionary stage | T Tauri star |
| Spectral type | K7 Ve |
| Variable type | INB |
| B | |
| Spectral type | M8–L0 |
| Astrometry | |
| Radial velocity (Rv) | 15.13±0.09 km/s |
| Proper motion (μ) | RA: −22.209±0.039 mas/yr Dec.: −0.175±0.035 mas/yr |
| Parallax (π) | 5.2144±0.0211 mas |
| Distance | 625 ± 3 ly (191.8 ± 0.8 pc) |
| Position (relative to CT Chamaeleontis) | |
| Component | B |
| Epoch of observation | 2006–2007 |
| Angular distance | 2.670″ |
| Position angle | 300.7° |
| Projected separation | ~440 AU |
| Details | |
| A | |
| Mass | 0.796+0.015 −0.014 M☉ |
| Radius | 2.06±0.05 R☉ |
| Luminosity | 1.41+0.17 −0.16 L☉ |
| Surface gravity (log g) | 4.5+0.7 −1.2 cgs |
| Temperature | 4,402+151 −166 K |
| Age | 2±2 Myr |
| B | |
| Mass | 19±5 MJup |
| Radius | 2.20+0.81 −0.60 RJup |
| Luminosity | 0.002 L☉ |
| Surface gravity (log g) | 3.5 cgs |
| Temperature | 2,500±100 K |
| Age | 2±2 Myr |
| Other designations | |
| CT Cha, 2MASS J11040909-7627193, IRAS 11027-7611, NSV 5081, WDS J11042-7627AB | |
| Database references | |
| SIMBAD | data |
| B | |
CT Chamaeleontis (CT Cha) is a T Tauri star - a primary of the star system in the constellation of Chamaeleon. It has an apparent visual magnitude which varies between 12.31 and 12.43. The star is still accreting material at rate 6×10−10 M☉/year.
Cuno Hoffmeister discovered that CT Chamaeleontis is a variable star in 1962. It was given its variable star designation in 1981.