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Artist's rendering of NASA's 2001 Mars Odyssey orbiting Mars. The following table is a list of Mars orbiters, consisting of space probes which were launched from Earth and are currently orbiting Mars. As of August 2023, there have been 18 spacecraft missions operating in Mars' orbit, 7 of which are currently active.
There is a proposal to use the Optical Navigation Camera on the Mars Reconnaissance Orbiter to search for small moons, dust rings and old orbiters. [45] As of 2016, there were believed to be eight derelict spacecraft in orbit around Mars (barring unforeseen event). [46] The Viking 1 orbiter was not expected to decay until at least 2019. [47]
The satellites of Mars include : Non functional but (probably) orbiting: Viking 1 & 2 orbiter; Mariner 9; Mars Global Surveyor; Mars 2, 3, 5; Phobos 2;
The oldest active spacecraft for Mars is 2001 Mars Odyssey. 2001 Mars Odyssey. Mission: Mars Odyssey was designed to map the surface of Mars and also acts as a relay for the Curiosity rover. [9] Its name is a tribute to the novel and 1968 film 2001: A Space Odyssey. Launched: 7 April 2001; Destination: Mars; Arrival: 24 October 2001 ...
Thailand Thai Space Consortium developed a satellite called TSC-Pathfinder, being launched in 2023. Poland 's Institute Of Aviation developed a rocket named ILR-33 BURSZTYN (ILR-33 AMBER). Mexico announced that it would launch some satellites some time in 2024. Japan planned to launch several rockets starting in 2023.
2001 Mars Odyssey: USA 24 October 2001 Active Longest-surviving, continuously active spacecraft in orbit around another planet Mars Express: ESA: 20 December 2003 Active Mars Reconnaissance Orbiter: USA 10 March 2006 Active MAVEN: USA 22 September 2014 Active Mars Orbiter Mission: India 24 September 2014 Contact lost April 2022 [20]
Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 22 January 2025, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never launched. 3 Block III satellites have completed ...
Several factors make placing a spacecraft into an areostationary orbit more difficult than a geostationary orbit. Since the areostationary orbit lies between Mars's two natural satellites, Phobos (semi-major axis: 9,376 km) and Deimos (semi-major axis: 23,463 km), any satellites in the orbit will suffer increased orbital station keeping costs due to unwanted orbital resonance effects.