Gemini-4 (4)

Pad 19 ()
Titan-II (4)


James A. McDivitt (1), Commander
Edward H. White II (1), Pilot

Backup Crew:

Frank Borman
James A. Lovell, Jr.


Clifton C. Williams, Jr. (Cape)
Virgil I. Grissom (Houston)



Gemini-4 capsule

Mission Objective:

Evaluate effects of prolonged space flight. Demonstrate and evaluate performance of spacecraft and systems in 4-day flight. Evaluate procedures for crew rest and work cycles, eating schedules, and realtime flight planning.

Secondary objectives included: Demonstrate and evaluate EVA and control by use of HHMU and tether. Stationkeep and rendezvous with second stage of GLV. Evaluate spacecraft systems. Make in-and-out-of plane maneuvers. Further test OAMS retro backup capability. Perform 11 experiments.


June 3, 1965 10:15:59.562 am.


Altitude: 296.1 km (159.9nm)
Inclination: xxx degrees
Orbits: 62
Duration: 4 Days, 1 hour, 56 min, 12 seconds
Distance: km


June 7, 1965. Landing was at 27deg 44min North and 74deg 11min West. Landing was 81.4km from attempted landing zone.

Mission Highlights:

Gemini-4 was NASA's 1st Extra Vehicular Activity (EVA) operation. EVA time 36min

All but one primary objectives were acheived. Computer controlled reentry in the demonstration and evaluation of spacecraft systems objective was not flown because of inadvertent alteration of computer memory. All secondary objectives were met except one. The secondary objective of stationkeeping and rendezvous was only partially successful because separation and rendezvous was not attempted due to fuel consumption.

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Last Updated Saturday September 28 00:51:45 EDT 1996
Jim Dumoulin (