launched fromUSA

STEP-4

Success

OCT 22199713:13:00 UTC

A single payload to LEO on Pegasus XL.

A single payload to LEO on Pegasus XL.

LIFTOFF

OCT 22 1997

13:13:00 UTC

Success

launched fromWallops

aboardPegasus XLintoLEO

Carrier aircraft

Lockheed L-1011 TriStar

Payload

STEP-4 (Space Test Experiments Platform/Mission 4)