Gemini 4 Spacecraft: S/C-4 Launch Vehicle: Titan II GLV-4 12559 Launched: 3 Jun 1965 Prime Crew	⇑ Mission List ⇑ Designation: Gemini T2 N O-2 Description: 2nd Gemini Titan II manned short duration orbital
	J A McDivitt E H White Backup Crew F F Borman J A Lovell

Duration: 4.08 days Decay Date: 1965-06-07 USAF Sat Cat: 1390 COSPAR: 1965-043A Apogee: 281 km (174 mi) Perigee: 162 km (100 mi) Inclination: 32.5000 deg Period: 88.80 min. In terms of previous U.S. manned spaceflight experience, Gemini 4 was a long-duration mission. Its four-day mission was comparable to what hade been contemplated in extending the capabilities of the Mercury spacecraft to the limit. However, four days did not approach the limits of the Gemini spacecraft, and it was the standard duration for later Gemini docking missions with Agena target vehicles. Ed White performed the first U.S. EVA. More than duplicating Leonov's feat three months earlier on Voskhod 2, White was able to maneuver around the spacecraft using a hand-held thruster. References: Grimwood, James M., and Hacker, Barton C., with Vorzimmer, Peter J. Project Gemini Technology and Operations: A Chronology (1969), NASA SP-4002. Hacker, Barton C., and Grimwood, James M. On Shoulders of Titans: A History of Project Gemini. (1977 hardbound and soft bound; reprinted softbound in January 2002), NASA SP-4203. Encyclopedia Astronautica. Wikipedia.