STSS DEMO 2 (USA 209)

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STSS DEMO 2 (USA 209) is classified as:

Military

NORAD ID: 35938

Int'l Code: 2009-052B

Perigee: 1,340.0 km

Apogee: 1,362.0 km

Inclination: 58.0 °

Period: 112.6 minutes

Semi major axis: 7722 km

RCS: Unknown

Launch date: September 25, 2009
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)

STSS DEMO 2 (USA 209) is part of a $1.5 billion project known as STSS Demo. The satellites will be used together with STSS DEMO 1 by the U.S. Missile Defense Agency to test the "birth to death" tracking of missiles from launch to re-entry. The two craft, weighing nearly 5,000 pounds [2,268 kg] at launch and each having pairs of power-generating solar wings, are equipped with infrared and visible sensors to spot missile launches, track the vehicles through space and observe the entry back into the atmosphere. By working together from separate vantage points in low-Earth orbit, their imagery will combine to provide 3-D tracking of objects.

1 35938U 09052B   21249.91602527 0.00000000  00000-0  00000-0 0    07
2 35938  57.9875 172.2287 0014224  77.3097 282.6903 12.79404788    06

Source of the keplerian elements: McCants