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HomeLaunch HistoryRocket EncyclopediaFuture LaunchesStatistics & ChartsDashboard

Pegasus family

Pegasus HAPS

United States1991 to 1994
Drawing of the Pegasus HAPS

A Pegasus with the small liquid-fueled HAPS upper stage, flown in 1991 and 1994. The first flight leaves its seven small satellites in a lower orbit than planned.

Launches
2
Success rate
50%
0 failures · 1 partial
First flight
17 July 1991
7 microsats
Last flight
19 May 1994
Space Test Experiments Platform 2 (STEP-2)
Builder
OSC
Height
15.5 m
Diameter
1.3 m
Stages
4
Propellants
Solid, Hydrazine
Payload to LEO
250 kg

Launches per year

Pegasus HAPS
Other Pegasus rockets
Show as table
YearLaunchesPegasus HAPS
199010
199111
199320
199431
199520
199650
199750
199860
199930
200020
200210
200340
200510
200610
200710
200820
201210
201310
201610
201910
202110
202610

Pegasus rockets

RocketFlownLaunchesSuccess rateHeightPayload to LEO
Pegasus1990 to 19944100%16.9 m443 kg
Pegasus HAPS1991 to 1994250%15.5 m250 kg
Pegasus XL1994 to 20263190%17.6 m443 kg
Pegasus Hybrid1995 to 20004100%15.5 m350 kg
Pegasus XL HAPS1997 to 19995100%17.6 m443 kg