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Syncom 2, the world's first geosynchronous satellite, is launched from Cape Canaveral on a Delta B booster.

Historical image related to Syncom 2, the world's first geosynchronous satellite, is launched from Cape Canaveral on a Delta B booster. from July 26, 1963

Syncom

1960s and 80s NASA program to develop communications satellites

Syncom started as a 1961 NASA program for active geosynchronous communication satellites, all of which were developed and manufactured by the Space and Communications division of Hughes Aircraft Company. Syncom 2, launched in 1963, was the world's first geosynchronous…
Source: Wikipedia (CC BY-SA)

Geosynchronous satellite

Satellite with an orbital period equal to Earth's rotation period

A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth's rotation period. Such a satellite returns to the same position in the sky after each sidereal day, and over the course of a day traces out a path in the sky that is…
Source: Wikipedia (CC BY-SA)