| Observation data|
Epoch J2000.0 Equinox J2000.0
|Right ascension||15h 59m 51s|
|Declination||–28° 03′ 42″|
|Apparent magnitude (V)||11.500|
|Distance||~1,000 ly |
|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|
WASP-17 is an F-type main sequence star approximately 1,000 light-years away in the constellation Scorpius. As of 2009, an extrasolar planet has been confirmed to orbit the star. The planet is thought to orbit in a retrograde orbit (in the opposite direction to the star's rotation).
The star is unusual in that it has an orbiting exoplanet, WASP-17b, which is believed to orbit in the opposite direction to the star's spin and is said to be twice the size of Jupiter, but half its mass.
The planet was discovered by the SuperWASP project, hence the name.
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