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  2. List of satellites in geosynchronous orbit - Wikipedia

    en.wikipedia.org/wiki/List_of_satellites_in...

    A number of weather satellites are also present in geosynchronous orbits. Not included in the list below are several more classified military geosynchronous satellites, such as PAN. A special case of geosynchronous orbit is the geostationary orbit, which is a circular geosynchronous orbit at zero inclination (that is, directly above the equator ...

  3. 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 ...

  4. 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 15 August 2023, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 4 are unhealthy or in reserve, 41 are retired, 2 were lost during launch, and 1 prototype was never launched. 4 Block III satellites have completed ...

  5. Starlink - Wikipedia

    en.wikipedia.org/wiki/Starlink

    The satellites orbit in a circular low Earth orbit at about 500 km (310 mi) altitude [326] in a high-inclination orbit for a planned six to twelve-month duration. The satellites communicate with three testing ground stations in Washington State and California for short-term experiments of less than ten minutes duration, roughly daily.

  6. Satellite - Wikipedia

    en.wikipedia.org/wiki/Satellite

    This is an accepted version of this page This is the latest accepted revision, reviewed on 26 September 2024. Objects intentionally placed into orbit This article is about human-made satellites. For moons, see Natural satellite. For other uses, see Satellite (disambiguation). Two CubeSats orbiting around Earth after being deployed from the ISS Kibō module's Small Satellite Orbital Deployer A ...

  7. Earth observation satellite - Wikipedia

    en.wikipedia.org/wiki/Earth_observation_satellite

    In 2008, more than 150 Earth observation satellites were in orbit, recording data with both passive and active sensors and acquiring more than 10 terabits of data daily. [1] By 2021, that total had grown to over 950, with the largest number of satellites operated by US-based company Planet Labs. [4]

  8. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    GPS satellites orbit at an altitude of 20,200 kilometers (12,600 mi) with an orbital period of almost 12 hours. ... will repeat exactly after a fixed number of orbits ...

  9. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    The United States' Global Positioning System (GPS) consists of up to 32 medium Earth orbit satellites in six different orbital planes. The exact number of satellites varies as older satellites are retired and replaced. Operational since 1978 and globally available since 1994, GPS is the world's most utilized satellite navigation system.

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