CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1985-0106
STS 51B
STS 51B (NORAD 15665) landed on 6 May 1985, after 7 days in orbit.
Official date
NORAD number
15665
International designator
1985-034A
Object type
Spacecraft
Country
United States
Launched
29 Apr 1985Cape Canaveral
Landed (UTC)
6 May 1985Recorded time 16:11 UTC
Time in orbit
7 days7 days
How it ended
Landed
Latitude range
57.0°N to 57.0°SFinal inclination 57.0°
Mass
93,125 kg
Operator
NASA JSC
Built by
RWI/Palmdale
Bus
STS OV
Programme
OV-099
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 57.0°, allowed a re-entry anywhere between 57.0°N and 57.0°S.
Life in orbit
7 daysAlso ended on 6 May 1985
1 entryFrom the same launch
1985-034
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1985-0106
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1985-0106
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.