Gemini 10
| Gemini 10 is boosted into a higher orbit by its Agena Target Vehicle | |
| Mission type | |
|---|---|
| Operator | NASA | 
| COSPAR ID | 1966-066A | 
| SATCAT no. | 2349 | 
| Mission duration | 2 days, 22 hours, 46 minutes, 39 seconds | 
| Orbits completed | 43 | 
| Spacecraft properties | |
| Spacecraft | Gemini SC10 | 
| Manufacturer | McDonnell | 
| Launch mass | 8,296 pounds (3,763 kg) | 
| Landing mass | 4,254 pounds (1,930 kg) | 
| Crew | |
| Crew size | 2 | 
| Members | |
| EVAs | 2 | 
| EVA duration | 1 hour, 28 minutes | 
| Start of mission | |
| Launch date | July 18, 1966, 22:20:26 UTC | 
| Rocket | Titan II GLV, s/n #62-12565 | 
| Launch site | Cape Kennedy LC-19 | 
| End of mission | |
| Recovered by | USS Guadalcanal | 
| Landing date | July 21, 1966, 21:07:05 UTC | 
| Landing site | 26°45′N 71°57′W / 26.750°N 71.950°W | 
| Orbital parameters | |
| Reference system | Geocentric | 
| Regime | Low Earth orbit | 
| Perigee altitude | 299 kilometers (161 nmi) | 
| Apogee altitude | 756 kilometers (408 nmi) | 
| Inclination | 28.8 degrees | 
| Period | 95.19 minutes | 
| Epoch | July 19, 1966 | 
| Docking with GATV-5005 | |
| Docking date | July 19, 1966, 04:15:00 UTC | 
| Undocking date | July 20, 1966, 19:00:00 UTC | 
| Time docked | 1 day, 14 hours, 45 minutes | 
| (L-R) Young, Collins | |
Gemini 10 (officially Gemini X) was a 1966 crewed spaceflight in NASA's Gemini program. It was the 8th crewed Gemini flight, the 16th crewed American flight, and the 24th spaceflight of all time (includes X-15 flights over 100 kilometers (62 miles; 54 nautical miles)). During the mission, flown by command pilot John Young and pilot Michael Collins, Collins became the first person to perform two extravehicular activities.