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

Discoverer 19

Mission type	Technology
Operator	US Air Force/ARPA
Harvard designation	1960 Tau 1
COSPAR ID	1960-019A
SATCAT no.	00068
Spacecraft properties
Bus	Agena-B
Manufacturer	Lockheed
Launch mass	1,060 kilograms (2,340 lb)
Start of mission
Launch date	20 December 1960, 20:32 (1960-12-20UTC20:32Z) UTC
Rocket	Thor DM-21 Agena-B 258
Launch site	Vandenberg LC-75-3-5
End of mission
Decay date	23 January 1961 (1961-01-24)
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	206 kilometers (128 mi)
Apogee altitude	578 kilometers (359 mi)
Inclination	83.4 degrees
Period	92.4 minutes
Discoverer ← Discoverer 18 Discoverer 20 →   Midas ← Midas 2 RM-2 →

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] Communication with the satellite was lost on Christmas Day 1960. It remained in orbit until 23 January 1961,[3] when it decayed and reentered the atmosphere.

References

На других языках

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- [en] Discoverer 19

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[ru] Дискаверер-19

Дискаверер-19 или Радиометр-1 (англ. Discoverer 19, Radiometer 1) — экспериментальный военный спутник США, предназначавшийся для тестирования спутниковых систем раннего обнаружения межконтинентальных баллистических ракет.

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