STS-34
| Galileo and its Inertial Upper Stage (IUS) in the payload bay of Atlantis | |
| Names | Space Transportation System-34 STS-34 | 
|---|---|
| Mission type | Galileo spacecraft deployment | 
| Operator | NASA | 
| COSPAR ID | 1989-084A | 
| SATCAT no. | 20297 | 
| Mission duration | 4 days, 23 hours, 39 minutes, 20 seconds | 
| Distance travelled | 2,900,000 km (1,800,000 mi) | 
| Orbits completed | 79 | 
| Spacecraft properties | |
| Spacecraft | Space Shuttle Atlantis | 
| Launch mass | 116,831 kg (257,568 lb) | 
| Landing mass | 88,881 kg (195,949 lb) | 
| Payload mass | 22,064 kg (48,643 lb) | 
| Crew | |
| Crew size | 5 | 
| Members | |
| Start of mission | |
| Launch date | October 18, 1989, 16:53:40 UTC (12:53:40 pm EDT) | 
| Launch site | Kennedy, LC-39B | 
| Contractor | Rockwell International | 
| End of mission | |
| Landing date | October 23, 1989, 16:33:00 UTC (9:33 am PDT) | 
| Landing site | Edwards, Runway 23 | 
| Orbital parameters | |
| Reference system | Geocentric orbit | 
| Regime | Low Earth orbit | 
| Perigee altitude | 298 km (185 mi) | 
| Apogee altitude | 307 km (191 mi) | 
| Inclination | 34.33° | 
| Period | 90.60 minutes | 
| Instruments | |
| 
 | |
| STS-34 mission patch Back row: Williams and McCulley Front row: Lucid, Chang-Díaz and Baker | |
STS-34 was a NASA Space Shuttle mission using Atlantis. It was the 31st shuttle mission overall, and the fifth flight for Atlantis. STS-34 launched from Kennedy Space Center, Florida, on October 18, 1989, and landed at Edwards Air Force Base, California, on October 23, 1989. During the mission, the Jupiter-bound Galileo probe was deployed into space.