WASP-17
WASP-17 is an F-type main sequence star approximately 1,300 light-years away in the constellation Scorpius.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 15h 59m 50.9473s |
| Declination | −28° 03′ 42.327″ |
| Apparent magnitude (V) | 11.500 |
| Characteristics | |
| Spectral type | F6V |
| Astrometry | |
| Proper motion (μ) | RA: −6.600±1.557 mas/yr Dec.: −8.485±0.774 mas/yr |
| Parallax (π) | 2.4366 ± 0.0518 mas |
| Distance | 1,340 ± 30 ly (410 ± 9 pc) |
| Details | |
| Mass | 1.2 M☉ |
| Radius | 1.38 R☉ |
| Surface gravity (log g) | 4.14 ± 0.03 cgs |
| Temperature | 6509 ± 86 K |
| Metallicity [Fe/H] | –0.02 ± 0.09 dex |
| Rotational velocity (v sin i) | 10.6 ± 1.3 km/s |
| Age | 3 Gyr |
| Other designations | |
Dìwö, 1SWASP J155950.94−280342.3, USNO-B1.0 0619-0419495, 2MASS J15595095-2803422, TYC2 6787-1927-1, Gaia DR2 6042793005779654656 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
WASP-17 is named Dìwö. The name was selected in the NameExoWorlds campaign by Costa Rica, during the 100th anniversary of the IAU. Dìwö in Bribri language means the sun.
The star, although similar to Sun in terms of overall contents of heavy elements, is depleted of carbon. Carbon to oxygen molar ratio of 0.18±0.04 for WASP-17 is well below solar ratio of 0.55.
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