WASP-67
Star in the constellation Sagittarius
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WASP-67 is a K-type main-sequence star about 620 light-years away in the constellation Sagittarius. The star's age is poorly constrained.[8] WASP-67 is slightly depleted in heavy elements, having 85% of the solar abundance of iron.[5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Sagittarius[1] |
| Right ascension | 19h 42m 58.5218s[2] |
| Declination | −19° 56′ 58.521″[2] |
| Apparent magnitude (V) | 12.54[3] |
| Characteristics | |
| Evolutionary stage | Main sequence[2] |
| Spectral type | K0V[4] |
| Astrometry | |
| Radial velocity (Rv) | −0.76±0.80[2] km/s |
| Proper motion (μ) | RA: +1.647[2] mas/yr[2] Dec.: −33.032[2] mas/yr[2] |
| Parallax (π) | 5.2720±0.0123 mas[2] |
| Distance | 619 ± 1 ly (189.7 ± 0.4 pc) |
| Details | |
| Mass | 0.91±0.28[5] M☉ |
| Radius | 0.88±0.08[5] R☉ |
| Luminosity | 0.51[6] L☉ |
| Surface gravity (log g) | 4.35±0.15[5] cgs |
| Temperature | 5200±100[5] K |
| Metallicity [Fe/H] | −0.07[5] dex |
| Rotational velocity (v sin i) | 2.1±0.4[7] km/s |
| Age | 4.3±3.1[8] Gyr |
| Other designations | |
| WASP-67, TYC 6307-1388-1, 2MASS J19425852-1956585[3] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
A multiplicity survey in 2016 found one candidate stellar companion to WASP-67 at a projected separation of 4.422″±0.018″.[9] Nonetheless, follow-up observations in 2017 failed to find any bound stellar companions.[10]
Planetary system
In 2012 a transiting hot Jupiter planet, WASP-67b, was detected on a tight, circular orbit.[7] Its equilibrium temperature is 1050 K.[11]
The planetary atmosphere contains water, and a cloud layer is located higher than in the similar gas giant HAT-P-38b, indicating a high planetary metallicity.[11]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.43±0.09 MJ | 0.0510+0.001 −0.0008[4] |
4.61442±0.00001 | 0[12] | 85.8±0.35° | 1.15±0.11 RJ |