WASP-178
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lupus |
| Right ascension | 15h 09m 04.89336s |
| Declination | −42° 42′ 17.7894″ |
| Apparent magnitude (V) | 9.9 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A1IV-V |
| Variable type | Planetary transit variable, possibly Delta Scuti variable |
| Astrometry | |
| Radial velocity (Rv) | −23.908 km/s |
| Proper motion (μ) | RA: −10.243 mas/yr Dec.: −5.636 mas/yr |
| Parallax (π) | 2.4248±0.0216 mas |
| Distance | 1,350 ± 10 ly (412 ± 4 pc) |
| Details | |
| Mass | 2.02+0.04 −0.05 M☉ |
| Radius | 1.70±0.01 R☉ |
| Luminosity | 16.2+3.7 −1.8, 21.4+1.9 −2.0 L☉ |
| Surface gravity (log g) | 4.28±0.01 cgs |
| Temperature | 9,200+200 −170 K |
| Metallicity [Fe/H] | 0.03+0.10 −0.12 dex |
| Rotational velocity (v sin i) | 8.2±0.6 km/s |
| Age | 140+100 −80 Myr |
| Other designations | |
| CD−42°10057, CPD−42°6923, HD 134004, PPM 320287, TOI-1337, TIC 160708862, WASP-178, TYC 7829-2324-1, GSC 07829-02324, 2MASS J15090488-4242178, Gaia DR2 6003809889735481856, KELT-26 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-178, also known as KELT-26 and HD 134004, is a star located about 1,350 light-years (410 parsecs) away in the southern constellation of Lupus. It is a hot A-type main sequence star or subgiant, a likely Am star, and a possible Delta Scuti variable, about twice as massive as the Sun and twenty times as luminous. In late 2019, the star was discovered to be orbited by an ultra-hot Jupiter planet, WASP-178b, making it one of the hottest stars known to host a hot Jupiter.