CE Antliae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia |
| Right ascension | 10h 42m 30.10s |
| Declination | −33° 40′ 16.2″ |
| Apparent magnitude (V) | 10.91±0.07 |
| Characteristics | |
| Evolutionary stage | T Tauri star |
| Spectral type | M1 |
| Variable type | rotational variable, flare star |
| Astrometry | |
| Radial velocity (Rv) | 10.81±4.41 km/s |
| Proper motion (μ) | RA: −118.751±0.023 mas/yr Dec.: −19.648±0.026 mas/yr |
| Parallax (π) | 29.3277±0.0273 mas |
| Distance | 111.2 ± 0.1 ly (34.10 ± 0.03 pc) |
| Absolute magnitude (MV) | +9.0 |
| Details | |
| Mass | 0.460±0.086 M☉ |
| Radius | 0.917±0.119 R☉ |
| Luminosity | 0.11490±0.01903 L☉ |
| Surface gravity (log g) | 4.1759±0.1743 cgs |
| Temperature | 3509.0±115.7 K |
| Rotation | 4.92 days |
| Rotational velocity (v sin i) | 63.2 km/s |
| Age | 6.4±1.1 Myr |
| Other designations | |
| TWA 7, CE Ant, TYC 7190-2111-1, ASAS J104230-3340.3, GSC 07190-02111, 2MASS J10423011-3340162, RX J104230.3-334014, TIC 54147487, WISE J104230.01-334016.4, Gaia DR2 5444751795151480320 | |
| Database references | |
| SIMBAD | data |
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CE Antliae (also called TWA 7) is a young low-mass star in the constellation of Antlia. It is surrounded by a debris disk and has one directly imaged planet candidate.
TWA 7 was discovered in 1999 with a spectral type of M1 and as a member of the TW Hydrae association. The detection of molecular hydrogen is interpreted as a weak sign of accretion of gas near the star. A giant x-ray flare was detected on 2010-09-07 with MAXI/GSC on the ISS.