MA-4 (20)

Mercury Atlas 4

Pad LC-14 ()

Atlas (4)

Crew:

Unmanned, Robot operations

Milestones:

Payload:

Spacecraft No. 8A, Launch Vehicle 88-D

Mission Objective:

Spacecraft environmental control in orbit

Launch:

September 13, 1961

Orbit:

Altitude: 142.1 (apogee) by 98.9 (perigee) statute miles

Orbits: 1

Period: 92min 28sec

Duration: 0 Days, 1 hour, 49 min, 20 seconds

Distance: 26, 047 statute miles

Velocity 17,526 mph

Max Q: 975

Max G: 7.7

Landing:

Mission Highlights:

Mission partially successful

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