Japan's small lunar probe Equuleus has entered its scheduled orbit, according to the Japan Aerospace Exploration Agency.
Equuleus is a water-fueled probe. It was launched Nov. 16 on a NASA rocket together with Omotenashi, which tried but failed to become the nation's first moon lander.
According to JAXA, Equuleus entered its scheduled orbit after approaching the moon early Tuesday, and will reach its destination point behind the moon from the Earth in about 18 months.
