1,380 kg (3,042 lb) at launch, 675 kg (1,488 lb) at lunar orbit, and 523 kg (1,153 lb) after releasing the impactor.
Cuboid in shape of approximately 1.5 m (4.9 ft)
X band, 0.7 m (2.3 ft) diameter dual gimballed parabolic antenna for payload data transmission. The Telemetry, Tracking & Command (TTC) communication operates in S band frequency.
The spacecraft was mainly powered by its solar array, which included one solar panel covering a total area of 2.15 × 1.8 m (7.1 × 5.9 ft) generating 750 W of peak power, which was stored in a 36 A·h lithium-ion battery for use during eclipses.
The spacecraft used a bipropellant integrated propulsion system to reach lunar orbit as well as orbit and altitude maintenance while orbiting the Moon. The power plant consisted of one 440 N engine and eight 22 N thrusters. Fuel and oxidiser were stored in two tanks of 390 litres (100 US gal) each.
Navigation and control
The craft was 3-axis stabilise