Hayabusa was an unmanned spacecraft developed by the Japan Aerospace Exploration Agency

Hayabusa carried a tiny mini-lander (weighing only 591 g (20.8 oz), and approximately 10 cm (3.9 in) tall by 12 cm (4.7 in) in diameter) named "MINERVA" (short for MIcro/Nano Experimental Robot Vehicle for Asteroid).

Hayabusa on Wikipedia