Author(s): Trolligi

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Kepler-1513, also known as KOI-3678 and Gaia-TROI-127, is a K-type main sequence star about 1,147 light-years away in the constellation Lyra. In 2022, studies of the transit-timing variations of its one known planet suggested the existence of a Moon-to-Mars-mass satellite, making it the only the third strong candidate exomoon and the smallest one detected so far (the first two exomoons at Kepler-1625 and Kepler-1708 were Neptune-sized).

Kepler-1513 b and its moon in the foreground

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