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This is an accepted version of this page This is the latest accepted revision, reviewed on 5 March 2025. 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 ...
Download as PDF; Printable version ... Pages in category "Satellites" The following 50 pages are in this category, out of 50 total. ... Text is available under the ...
Satellite geodesy began shortly after the launch of Sputnik in 1957. Observations of Explorer 1 and Sputnik 2 in 1958 allowed for an accurate determination of Earth's flattening. [1]: 5 The 1960s saw the launch of the Doppler satellite Transit-1B and the balloon satellites Echo 1, Echo 2, and PAGEOS.
Download as PDF; Printable version; In other projects ... The prograde satellites consist of the Himalia group and three others in groups ... 21.5 ± 2.0: 128,000: 0 ...
Greenhouse Gases Observing Satellite. The first precise carbon dioxide observing satellite and precursor to OCO-2. Himawari 8 and 9: Active Japan Meteorological Agency: 2014 Similar to NASA's GOES satellites. ICESat-2: Active NASA 2018 Measures ice sheet height changes for climate change diagnoses. [16] [17] IMS-1: Active ISRO: 2008 ISS: Active
The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.
Passive calibration satellites are objects of known shape and size. [1] Examples include the Lincoln Calibration Sphere 1 developed by the MIT Lincoln Laboratory.These are generally solid or hollow spheres, since that shape will have the same cross-section regardless of viewing angle, though later passive satellites used wire grid designs. [2]
PAGEOS (PAssive Geodetic Earth Orbiting Satellite) was a balloon satellite which was launched by NASA in June 1966. [1] It was the first satellite specifically launched for use in geodetic surveying , [ 3 ] or measuring the shape of the earth, by serving as a reflective and photographic tracking target.