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Eagle
  STEP 1 Credit: Manufacturer Image | 
American military strategic defense satellite. Technology satellite built by Orbital Sciences Corporation (OSC) => Orbital ATK for AFRL, USA. Used Eagle-Bus ESPA (ESPAStar).
 AKA: STEP.  Status: Operational 1994.  First Launch: 1994-05-19.  Last Launch: 1997-10-22.  Number:  3 . Gross mass: 180 kg (390 lb). Height: 4.57 m (14.99 ft). Diameter: 0.37 m (1.21 ft). Span: 1.28 m (4.19 ft). 
More at: Eagle. 
Family: 
Medium earth orbit, 
Military, 
Military strategic defense sat. 
Country: 
USA. 
Spacecraft: 
STEP. 
Launch Vehicles: 
Pegasus, 
Pegasus/HAPS, 
Pegasus XL. 
Launch Sites: 
Point Arguello WADZ, 
Wallops Island DZ. 
Agency: 
USAF. 
Bibliography: 
2, 
4, 
5, 
6, 
12290, 
12291, 
12292. 
Photo Gallery
  | STEP 2 (SIDEX) Credit: Manufacturer Image | 
  | STEP-4 Credit: Manufacturer Image | 
1994 May 19 - . 
17:03 GMT - . 
Launch Site: 
Point Arguello. 
Launch Complex: 
Point Arguello WADZ. 
 
Launch Pad: Aircraft from Edwards..  
Launch Platform: NB-52 008. 
LV Family: 
Pegasus. 
Launch Vehicle: 
Pegasus/HAPS. 
- STEP 2 (SIDEX) - . 
 Payload: STEP M2 / P 91-A. Mass: 180 kg (390 lb). Nation: USA. 
Agency: USAF STP. 
Program: STEP. 
Class: Military. 
 Type: Strategic defense satellite. Spacecraft: Eagle. 
 USAF Sat Cat:  23105 .  COSPAR: 1994-029A. Apogee: 813 km (505 mi). Perigee: 597 km (370 mi). Inclination: 82.00 deg. Period: 98.90 min. Did not achieve planned orbit, though still useful. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).  Air dropped in Point Arguello WADZ.. 
 
1994 June 27 - . 
21:15 GMT - . 
Launch Site: 
Point Arguello. 
Launch Complex: 
Point Arguello WADZ. 
 
Launch Pad: Aircraft from Vandenberg..  
Launch Platform: L-1011. 
LV Family: 
Pegasus. 
Launch Vehicle: 
Pegasus XL. 
 
FAILURE: Destroyed on launch .  
Failed Stage: 1. 
- STEP 1 - . 
 Payload: STEP M1 /  P90-1. Mass: 180 kg (390 lb). Nation: USA. 
Agency: OSC. 
Program: STEP. 
Class: Military. 
 Type: Strategic defense satellite. Spacecraft: Eagle. 
Apogee: 38 km (23 mi). Destroyed on launch  Air dropped in Point Arguello WADZ.. 
 
1997 October 22 - . 
13:13 GMT - . 
Launch Site: 
Wallops Island. 
Launch Complex: 
Wallops Island DZ. 
 
Launch Pad: RW04/22.  
Launch Platform: L-1011. 
LV Family: 
Pegasus. 
Launch Vehicle: 
Pegasus XL. 
- STEP-4 - . 
 Payload: STEP M4. Mass: 180 kg (390 lb). Nation: USA. 
Agency: USAF STP. 
Program: STEP. 
Class: Military. 
 Type: Strategic defense satellite. Spacecraft: Eagle. 
 Decay Date: 2001-03-31 .  USAF Sat Cat:  25013 .  COSPAR: 1997-063A. Apogee: 500 km (310 mi). Perigee: 432 km (268 mi). Inclination: 45.00 deg. Period: 93.80 min. Air dropped in Wallops Island DZ.. 
 
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