 Lee and Meade perform an untethered EVA with SAFER backpacks above Discovery's payload bay | |
| Names | Space Transportation System-64 |
|---|---|
| Mission type | Research Technology |
| Operator | NASA |
| COSPAR ID | 1994-059A |
| SATCAT no. | 23251 |
| Mission duration | 10 days, 22 hours, 49 minutes, 57 seconds |
| Distance travelled | 7,242,048 kilometers (4,500,000 mi) |
| Orbits completed | 176 |
| Spacecraft properties | |
| Spacecraft | Space Shuttle Discovery |
| Payload mass | 9,260 kilograms (20,410 lb) |
| Crew | |
| Crew size | 6 |
| Members | |
| Start of mission | |
| Launch date | 9 September 1994, 22:22:35 UTC |
| Launch site | Kennedy, LC-39B |
| End of mission | |
| Landing date | 20 September 1994, 21:12:52 UTC |
| Landing site | Edwards, Runway 4 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 259 kilometres (161 mi) |
| Apogee altitude | 269 kilometres (167 mi) |
| Inclination | 56.9 degrees |
| Period | 89.5 min |
 Left to right – Front: Hammond, Richards, Helms; Back: Lee, Linenger, Meade | |
STS-64 was a Space Shuttle Discovery mission that was set to perform multiple experiment packages. It was Discovery's 19th flight. STS-64 was launched from Kennedy Space Center, Florida, on 9 September 1994, and landed back on 20 September 1994 at Edwards Air Force Base.