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Delta 1900 Launch Vehicle

Delta 1900 was a two-stage Delta 1000-series configuration with the MB-3-powered extended long-tank first stage, nine Castor II strap-on motors, and the 1.65-metre AJ10-118F second-stage and fairing arrangement without a solid third stage. Its sole flight successfully launched Explorer 51, Atmosphere Explorer C, in December 1973.

Delta 1900 Launch Vehicle
NASA / Tony Gray · NASA/KSC asset; NASA’s KSC-07PD-2590 catalog identifies the exact Delta II/Dawn launch and credits the photograph to NASA / Tony Gray. NASA’s current Images and Media Usage Guidelines generally permit factual or informational/editorial use with NASA attribution and without implying NASA endorsement. NASA insignia, launch-provider or other third-party marks, identifiable-person rights, and any commercial, promotional, merchandise, or protected-rights use remain separately restricted or clearance-sensitive; verify before such use. · Source
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Identity

Aliases
Delta Model 1900Model 1900Thor-Delta 1900
Family Name
Delta 1900
Full Name
Delta 1900 Launch Vehicle
Status
retired
Type
rocket
Variant Name
1900

Details

Description
Delta 1900 was a two-stage Delta 1000-series configuration with the MB-3-powered extended long-tank first stage, nine Castor II strap-on motors, and the 1.65-metre AJ10-118F second-stage and fairing arrangement without a solid third stage. Its sole flight successfully launched Explorer 51, Atmosphere Explorer C, in December 1973.
First Flight Year
1,973
Last Flight Year
1,973
Manufacturer
Operator
Parent Vehicle Family
Rocket Specs
Reusability
expendable
Stages Count
2

Links

Assets & Meta

Creation Time
July 18, 2026 at 06:28:33 UTC
Updated Time
July 19, 2026 at 10:46:20 UTC

Other

Search Name
Delta 1900 Launch Vehicle Delta Model 1900 Model 1900 Thor-Delta 1900