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Delta II
39.2m
Human (1.8m)
1.8m
Delta II / Credits: Wikipedia (Wikimedia Commons)
United StatesRetired1989–2018
Delta II
McDonnell Douglas / Boeing
The workhorse of the 1990s-2010s — flew GPS satellites and Mars rovers.
Delta II was a medium-lift vehicle evolved from Delta I. It launched over 100 missions including Mars Pathfinder, Spirit, Opportunity, and the entire modern GPS constellation. A 98% success rate made it one of the most reliable launch vehicles ever.
Fun facts
Launched all Mars rovers including Spirit and Opportunity.
Height
39.2 m
Diameter
2.44 m
Mass
231 t
Stages
2
Thrust
2,110 kN
Payload LEO
6,100 kg
Payload GTO
2,700 kg
Total flights
155
Success rate99.0%
153 success1 partial1 failure
Launch pads
- SLC-2W, Vandenberg
- LC-17, Cape Canaveral
No upcoming launches scheduled.
