The Space Shuttle was the first operational orbital spacecraft designed for reuse. Orbital perturbations cause longitude drift of the inoperable spacecraft and precession of the orbital plane. Several geostationary meteorological spacecraft are in operation. Blue Origin began developing systems for orbital human spacecraft prior to 2012. The payload was composed of 25 small spacecraft. Facilities are available to prepare and maintain spacecraft and payloads for flight. China has offered to provide SAR payloads aboard some of its BeiDou (BDS) navigation spacecraft. The various proposed crewed spacecraft were mostly spaceplanes. This is a timeline of Solar System exploration ordered by date of spacecraft launch. It combines some features of an aircraft with some of a spacecraft. The CCS is nearly identical to the system flown on the Viking spacecraft. A Sony MSX2 machine was launched into space on board of a Russian MIR spacecraft. Responsible for determining the position of the spacecraft in space. LEISA is derived from a similar instrument on the Earth Observing-1 spacecraft. The later Soyuz T spacecraft solved this issue.