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  2. Artificial satellites in retrograde orbit - Wikipedia

    en.wikipedia.org/wiki/Artificial_satellites_in...

    The United States launched two Future Imagery Architecture (FIA) radar satellites into 122° inclined retrograde orbits in 2010 and 2012. The use of a retrograde orbit suggest that these satellites use synthetic aperture radar. [3] Earth-observing satellites may also be launched into a Sun-synchronous orbit, which is slightly retrograde. [8]

  3. Retrograde and prograde motion - Wikipedia

    en.wikipedia.org/wiki/Retrograde_and_prograde_motion

    Prograde satellites of Uranus orbit in the direction Uranus rotates, which is retrograde to the Sun. Nearly all regular satellites are tidally locked and thus have prograde rotation. Retrograde satellites are generally small and distant from their planets, except Neptune's satellite Triton, which is large and close. All retrograde satellites ...

  4. List of first satellites by country - Wikipedia

    en.wikipedia.org/wiki/List_of_first_satellites...

    Jersey's first four satellites were launched together. Jersey is a Crown Dependency of the British sovereign France Qatar: Eutelsat 25B / Es'hail 1: Eutelsat Es'hailSat: SS/Loral: Ariane 5ECA: Kourou: 29 August 2013: Qatar's first satellite flew as a joint project with the French corporation Eutelsat Qatar: Es'hail 1: Es'hailSat: SS/Loral ...

  5. Timeline of artificial satellites and space probes - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_artificial...

    Artificial satellites and space probes in the 1980s Year Origin Name Target Status Description 1980 US: Solar Maximum Mission: Sun: Failure: Solar Maximum Mission solar probe succeeded after being repaired in Earth orbit 1981 India: Bhaskara-2: Earth: Success: Bhaskara-2 satellite; launched on Russian Kosmos-3M rocket for ISRO Soviet Union ...

  6. Satellite ground track - Wikipedia

    en.wikipedia.org/wiki/Satellite_ground_track

    A satellite with an orbital inclination between zero and ninety degrees is said to be in what is called a direct or prograde orbit, meaning that it orbits in the same direction as the planet's rotation. A satellite with an orbital inclination between 90° and 180° (or, equivalently, between 0° and −90°) is said to be in a retrograde orbit.

  7. Category:Satellites by country - Wikipedia

    en.wikipedia.org/wiki/Category:Satellites_by_country

    Pages in category "Satellites by country" This category contains only the following page. This list may not reflect recent changes. G. Hellenic Space Agency

  8. List of Earth observation satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_Earth_observation...

    Part of the Polar Operational Environmental Satellites (POES) program. NOAA-20: Active NASA and NOAA: 2017 Part of the Joint Polar Satellite System (JPSS) program. Oceansat-2: Active ISRO: 2009 OCO-2: Active NASA 2014 Orbiting Carbon Observatory 2. Part of the A-Train. The second precise carbon dioxide observing satellite after GOSAT. PACE ...

  9. List of GPS satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_GPS_satellites

    Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 19 December 2024, 83 Global Positioning System navigation satellites have been built: 30 are launched and operational, 1 is launched and undergoing the commissioning process, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never ...