The GPS-IIR replenishment satellites are produced by General Electric Astrospace (later Martin Marietta and Lockheed Missiles & Space) under a contract issued in 1989, which included 21 satellites based on the commercial AS-4000 bus. These provided improved navigation accuracy and longer autonomous satellite operation than earlier model GPS satellites. The satellites were three-axis stabilized and operated at downlink frequencies of 1572.42 MHz and 1227.6 MHz (L-Band) and 2227.5 MHz (S-Band). Lockheed was responsible for launch and flight operations support of the GPS-IIR through 2006.
Delta II is an American space launch system developed by McDonnell Douglas, now part of the Delta rocket family operated by United Launch Alliance. With more than 150 missions and a nearly perfect track record, Delta II has established itself as one of the most successful orbital launch systems.
See DetailsUnited Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
INFO WIKISPHEREx is a planned two-year astrophysics mission to survey the sky in the near-infrared light, which, though not visible to the human eye, serves a…
18 Low Earth Orbit communication satellites with Ku, Q and V band payloads for the G60 constellation operated by Shanghai Spacecom Satellite Technolo…
Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.
Eighth test flight of the two-stage Starship launch vehicle.
The CSO-3 (Composante Spatiale Optique-3 satellite is the third of three new-generation high-resolution optical imaging satellites for the French mil…
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Glonass-K2 are the fourth generation of satellite design for GLONASS satellite navigation system. GLONASS is a Russian space-based navigation system …
Details TBD.
Progress resupply mission to the International Space Station.
Commercial Earth observation satellites (~540 kg each) built by CAST for China Siwei Survey and Mapping Technology Co. Ltd., with resolution down to …