CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1990-0232
STS 31
STS 31 (NORAD 20579) landed on 29 April 1990, after 5 days in orbit.
Official date
NORAD number
20579
International designator
1990-037A
Object type
Spacecraft
Country
United States
Launched
24 Apr 1990Cape Canaveral
Landed (UTC)
29 Apr 1990Recorded time 13:49 UTC
Time in orbit
5 days5 days
How it ended
Landed
Latitude range
28.5°N to 28.5°SFinal inclination 28.5°
Mass
93,024 kg
Operator
NASA JSC
Built by
RWI/Palmdale
Bus
STS OV
Programme
OV-103
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 28.5°, allowed a re-entry anywhere between 28.5°N and 28.5°S.
Life in orbit
5 daysAlso ended on 29 Apr 1990
4 entriesFrom the same launch
1990-037
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1990-0232
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1990-0232
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.