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Juno II Launch Vehicle

Juno II was a four-stage NASA launch vehicle that paired a stretched Jupiter intermediate-range ballistic-missile first stage with the clustered Sergeant-derived upper stages developed for Jupiter-C and Juno I. Ten launches from 1958 to 1961 supported lunar probes and Explorer satellites; Pioneer 4, Explorer 7, Explorer 8, and Explorer 11 achieved their principal launch objectives.

Juno II Launch Vehicle
NASA Marshall Space Flight Center · NASA asset; NASA’s 9801801 catalog identifies Marshall Space Flight Center (MSFC) and describes the exact Juno II launch vehicle, with no third-party photographer or copyright holder listed. NASA’s current Images and Media Usage Guidelines generally permit factual or informational/editorial use with NASA attribution and without implying NASA endorsement. Commercial, promotional, merchandise, logo/insignia, or other protected-rights uses may require separate clearance; verify any third-party rights if later identified. · Source
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Identity

Aliases
Juno 2Juno-IIJupiter Juno II
Family Name
Juno II
Full Name
Juno II Launch Vehicle
Status
retired
Type
rocket

Details

Description
Juno II was a four-stage NASA launch vehicle that paired a stretched Jupiter intermediate-range ballistic-missile first stage with the clustered Sergeant-derived upper stages developed for Jupiter-C and Juno I. Ten launches from 1958 to 1961 supported lunar probes and Explorer satellites; Pioneer 4, Explorer 7, Explorer 8, and Explorer 11 achieved their principal launch objectives.
Dimensions
Diameter
…
Height
…
First Flight Year
1,958
Last Flight Year
1,961
Operator
Parent Vehicle Family
Propulsion Configurations
  • Entries
    • Count
      1
      Placement
      core
      Propulsion System
      Role
      main
    • Count
      11
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Variant Notes
      Migrated from legacy reference "Scaled-down Sergeant" without inventing a more precise installation.
    • Count
      3
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Variant Notes
      Migrated from legacy reference "Scaled-down Sergeant" without inventing a more precise installation.
    • Count
      1
      Placement
      upper
      Propulsion System
      Role
      upper-stage
      Variant Notes
      Migrated from legacy reference "Scaled-down Sergeant" without inventing a more precise installation.
Rocket Specs
Liftoff Mass
…
Payload Capacity
LEO
…
Reusability
expendable
Stages Count
4

Links

Official Url
https://www.nasa.gov/wp-content/uploads/2023/04/sp-4012v2.pdf

Assets & Meta

Creation Time
July 13, 2026 at 12:48:45 UTC
Updated Time
July 29, 2026 at 15:38:42 UTC
Image
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Juno II Launch Vehicle - AeroVia