Kepler-17 is a main-sequence yellow dwarf star about away in the constellation Cygnus. It is much more active than the Sun, with starspots covering roughly 6% of its surface. Starspots are long-lived, with at least one persisting for 1400 days.
Planetary system Kepler-17 is known to host one hot Jupiter exoplanet, Kepler-17b, in orbit around it. It was discovered by the Kepler mission using the transit method in 2011. Its orbit is aligned with the host star's equator.
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