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  2. List of orbits - Wikipedia

    en.wikipedia.org/wiki/List_of_orbits

    Such a satellite spends most of its time over two designated areas of the planet. An inclination of 63.4° is normally used to keep the perigee shift small. [15] Supersynchronous orbit: Any orbit in which the orbital period of a satellite or celestial body is greater than the rotational period of the body which contains the barycenter of the orbit.

  3. Low Earth orbit - Wikipedia

    en.wikipedia.org/wiki/Low_Earth_orbit

    A wide variety of sources [5] [6] [7] define LEO in terms of altitude.The altitude of an object in an elliptic orbit can vary significantly along the orbit. Even for circular orbits, the altitude above ground can vary by as much as 30 km (19 mi) (especially for polar orbits) due to the oblateness of Earth's spheroid figure and local topography.

  4. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    With these parallel developments in the 1960s, it was realized that a superior system could be developed by synthesizing the best technologies from 621B, Transit, Timation, and SECOR in a multi-service program. Satellite orbital position errors, induced by variations in the gravity field and radar refraction among others, had to be resolved. A ...

  5. Geostationary orbit - Wikipedia

    en.wikipedia.org/wiki/Geostationary_orbit

    The first satellite placed in a geostationary orbit was Syncom 3, which was launched by a Delta D rocket in 1964. [14] With its increased bandwidth, this satellite was able to transmit live coverage of the Summer Olympics from Japan to America. Geostationary orbits have been in common use ever since, in particular for satellite television. [10]

  6. Satellite navigation - Wikipedia

    en.wikipedia.org/wiki/Satellite_navigation

    A satellite navigation or satnav system is a system that uses satellites to provide autonomous ... (longitude, latitude, and altitude/elevation) ... Moving map display;

  7. Medium Earth orbit - Wikipedia

    en.wikipedia.org/wiki/Medium_Earth_orbit

    Clickable image, highlighting medium altitude orbits around Earth, [a] from Low Earth to the lowest High Earth orbit (geostationary orbit and its graveyard orbit, at one ninth of the Moon's orbital distance), [b] with the Van Allen radiation belts and the Earth to scale To-scale diagram of low, medium, and high Earth orbits Space of Medium Earth orbits (MEO) as pink area, with Earth and the ...

  8. List of satellites in geosynchronous orbit - Wikipedia

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

    Japan Satellite Systems 24 Ku-Band transponders: 1 October 2003: Same satellite as Galaxy-13 Galaxy 37 (Horizons 4) LS-1300: United States Intelsat: 3 August 2023, Falcon 9 v1.2: 125.0°W: AMC-21: Orbital ATK GEOStar-2: United States SES: Comsat: Canada, United States, Mexico, Caribbean, Central America: 14 August 2008 Ariane 5 ECA: Ku-band ...

  9. Equirectangular projection - Wikipedia

    en.wikipedia.org/wiki/Equirectangular_projection

    Equirectangular projection of the world; the standard parallel is the equator (plate carrée projection). Equirectangular projection with Tissot's indicatrix of deformation and with the standard parallels lying on the equator True-colour satellite image of Earth in equirectangular projection Height map of planet Earth at 2km per pixel, including oceanic bathymetry information, normalized as 8 ...

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