STS-56
| Components of the ATLAS-2 laboratory in the payload bay of Discovery | |
| Names | Space Transportation System-56 | 
|---|---|
| Mission type | Scientific research | 
| Operator | NASA | 
| COSPAR ID | 1993-023A | 
| SATCAT no. | 22621 | 
| Mission duration | 9 days, 6 hours, 8 minutes, 19 seconds | 
| Distance travelled | 6,202,407 km (3,853,997 mi) | 
| Orbits completed | 148 | 
| Spacecraft properties | |
| Spacecraft | Space Shuttle Discovery | 
| Landing mass | 93,683 kg (206,536 lb) | 
| Payload mass | 7,026 kg (15,490 lb) | 
| Crew | |
| Crew size | 5 | 
| Members | |
| Start of mission | |
| Launch date | April 8, 1993, 05:29:00 UTC (1:29 am EDT) | 
| Launch site | Kennedy, LC-39B | 
| Contractor | Rockwell International | 
| End of mission | |
| Landing date | April 17, 1993, 11:37:19 UTC (7:37:19 am EDT) | 
| Landing site | Kennedy, SLF Runway 33 | 
| Orbital parameters | |
| Reference system | Geocentric orbit | 
| Regime | Low Earth orbit | 
| Periapsis altitude | 291 km (181 mi) | 
| Apoapsis altitude | 299 km (186 mi) | 
| Inclination | 57.00° | 
| Period | 90.40 minutes | 
| Instruments | |
| 
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| STS-56 mission patch Standing: Cockrell, Foale, Ochoa Seated: Oswald, Cameron | |
STS-56 was a NASA Space Shuttle Discovery mission to perform special experiments. It was Discovery's 16th flight. The mission was launched from Kennedy Space Center, Florida, on April 8, 1993.