242 Earth days
KOI 172.02, about 1.5 times the size of Earth, orbits at a distance of around 0.75 astronomical units from its star, meaning that it is about 3/4 the distance from its star that the Earth is from the sun. Specifically, this means that KOI-172.02 orbits around 70 million miles from its star rather than the 93 million miles that the Earth orbits from the Sun and as a result completes an orbit around its star in 242 Earth days.
