T Chamaeleontis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Chamaeleon |
| Right ascension | 11h 57m 13.52451s |
| Declination | −79° 21′ 31.5305″ |
| Apparent magnitude (V) | 10.05 - 14.50 |
| Characteristics | |
| Evolutionary stage | T Tauri star |
| Spectral type | K0e |
| U−B color index | +0.63 |
| B−V color index | +1.14 |
| J−K color index | +1.67 |
| Variable type | Orion variable |
| Astrometry | |
| Radial velocity (Rv) | 13.8±0.1 km/s |
| Proper motion (μ) | RA: −41.586 mas/yr Dec.: −8.655 mas/yr |
| Parallax (π) | 9.7356±0.0332 mas |
| Distance | 335 ± 1 ly (102.7 ± 0.4 pc) |
| Absolute magnitude (MV) | +6.55 |
| Details | |
| Mass | 0.65 M☉ |
| Radius | 0.65±0.09 R☉ |
| Luminosity | 0.29 L☉ |
| Surface gravity (log g) | 4.50 cgs |
| Temperature | 5,111 K |
| Metallicity [Fe/H] | +0.09±0.15 dex |
| Rotational velocity (v sin i) | 39±3 km/s |
| Age | 12.7 Myr |
| Other designations | |
| T Cha, HIP 58285, TYC 9419-1187-1, GSC 09419-01187, 2MASS J11571348-7921313 | |
| Database references | |
| SIMBAD | data |
T Chamaeleontis (T Cha), also known as HIP 58285, is a T Tauri star located in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude that ranges from 10.05 to 14.50, which is below the limit for naked eye visibility. Gaia DR3 parallax measurements place the object 335 light years away and it is currently receding with a heliocentric radial velocity of 13.8 km/s. At its current distance, T Cha's average brightness is diminished by 0.31 magnitudes due to extinction from interstellar dust. It has an average absolute magnitude of +6.55.