Discoverer 19

Discoverer 19, also known as RM-1, was an American satellite which was launched in 1960. It was a technology demonstration spacecraft, based around an Agena-B.[1]

The launch of Discoverer 19 occurred at 20:32 UTC on 20 December 1960. A Thor DM-21 Agena-B rocket was used, flying from Launch Complex 75-3-5 at the Vandenberg Air Force Base.[2] Upon successfully reaching orbit, it was assigned the Harvard designation 1960 Tau 1.

Discoverer 19 was operated in a low Earth orbit, with a perigee of 206 kilometres (128 mi), an apogee of 578 kilometres (359 mi), 83.4 degrees of inclination, and a period of 92.4 minutes.[3] The satellite had a mass of 1,060 kilograms (2,340 lb),[4] and was used to demonstrate technology for the Midas programme,[5] including infrared sensors.[4] It remained in orbit until 23 January 1961,[3] when it decayed and reentered the atmosphere.


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