Kaguya, also known as SELENE, was the second Japanese lunar orbiter spacecraft. Kaguya usede a suite of 15 instruments to gather scientific data on lunar origins and evolution. The main orbiter was accompanied by two smaller satellites: a relay satellite Okina and a satellite Ouna for Very Long Baseline Interferometry observations. Kaguya orbited the Moon for a year and eight months and then ended the mission via a planned impact on the lunar surface.