WASP-46
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Indus |
| Right ascension | 21h 14m 56.85987s |
| Declination | −55° 52′ 18.4581″ |
| Apparent magnitude (V) | 12.9 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | G6V |
| Astrometry | |
| Radial velocity (Rv) | −3.28±1.62 km/s |
| Proper motion (μ) | RA: +12.521 mas/yr Dec.: −16.150 mas/yr |
| Parallax (π) | 2.6878±0.0131 mas |
| Distance | 1,213 ± 6 ly (372 ± 2 pc) |
| Details | |
| Mass | 0.828±0.067 M☉ |
| Radius | 0.858±0.024 R☉ |
| Surface gravity (log g) | 4.489±0.013 cgs |
| Temperature | 5600±150 K |
| Metallicity [Fe/H] | −0.37±0.13 dex |
| Rotation | 16.0±1.0 d |
| Rotational velocity (v sin i) | 1.9±1.2 km/s |
| Age | 9.6+3.4 −4.2 Gyr |
| Other designations | |
| TOI-101, TIC 231663901, WASP-46, GSC 08797-00758, 2MASS J21145687-5552184, DENIS J211456.8-555218 | |
| Database references | |
| SIMBAD | data |
WASP-46 is a G-type main-sequence star about 1,210 light-years (370 parsecs) away. The star is older than the Sun and is strongly depleted in heavy elements compared to the Sun, having just 45% of the solar abundance. Despite its advanced age, the star is rotating rapidly, being spun up by the tides raised by a giant planet in a close orbit.
The star displays excess ultraviolet emission associated with starspot activity, and is suspected to be surrounded by a dust and debris disk.