Crew:
    Thomas P. Stafford [2], Commander
    Eugene A. Cernan [1], Pilot

Backup Crew:
    James A. Lovell, Jr.
    Edwin E. Aldrin

Launch:
    Pad: LC 19
    Date: 3 June 1966
    Time: 13:39:33 UTC

Flight:
    Orbits: 44
    Duration: 3 days, 0 hours, 20 minutes, 50 seconds

Landing:
    Location: Atlantic Ocean (27° 52' N, 75° 0.4' W)
    Vessel: USS Wasp (CVS-18)
    Date: 6 June 1966
    Time: 14:00:23 UTC

Rendezvous, but did not dock, with an orbiting Agena rocket. A shroud failed to separate from the Agena, making it look like an "angry alligator."  Cernan performed a spacewalk lasting about 2 hours. The EVA was scheduled to last longer, but Cernan was exhausted. His heart rate was up to 180, he was breathing heavily and producing more CO2 than his suit could absorb, and sweating so heavily the faceplate of the suit fogged over so he could not see. The exertions tore some of the layers of insulation in the suit and Cernan receive a severe sunburn on his lower back. The suit was so stiff he had a very difficult time reentering the capsule.

The original crew for Gemini IX was Elliot See and Charlie Bassett.  They were both killed in a crash of their T-38 trainer on 28 February 1966.

Gemini IX-A is on display at the Kennedy Space Center Visitor Complex near Titusville, FL.