📊 Analysis
Statistics & insights on rockets and organizations — technology, history, numbers.
Delta II 7426-9.5
RetiredMcDonnell Douglas
Delta II was an expendable launch system, originally designed and built by McDonnell Douglas. Delta II was part of the Delta rocket family and entered service in 1989. Delta II vehicles included the Delta 6000, and the two later Delta 7000 variants ("Light" and "Heavy"). The rocket flew its final mission ICESat-2 on 15 September 2018, earning the launch vehicle a streak of 100 successful missions in a row, with the last failure being GPS IIR-1 in 1997.
Key figures
Total launches
1
Successes
1
Failures
0
Success rate
100.0 %
Success streak
1
Maiden flight
Feb 7, 1999
Reusable
No
Planned launches
0
Delta, Delta II family total
155 launches · 153 successes · 2 failures (25 variants)
🧐 Data check
Automatic plausibility checks — anomalies are surfaced transparently here:
- ℹ️The figures above apply only to the “Delta II 7426-9.5” variant. The Launch Library counts each variant separately — the Delta, Delta II family totals 155 launches across 25 variants.
Technology
Length
39 m
Diameter
2.44 m
Launch mass
170 t
Liftoff thrust
3,020 kN
Stages
4
Launches per year
of which in our database: 1
Successes Failures Other/planned
History & events
Sources
- Launch Library 2 (The Space Devs)
- Wikipedia