CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1978-0201
OPS 5547
OPS 5547 (NORAD 8468) re-entered Earth’s atmosphere on 1 May 1978, after 2 years, 4 months in orbit.
Official date
NORAD number
8468
International designator
1975-114B
Object type
Spacecraft
Country
United States
Launched
4 Dec 1975Vandenberg
Re-entered (UTC)
1 May 1978UTC calendar day
Time in orbit
2 years, 4 months879 days
How it ended
Re-entered (natural decay)
Latitude range
83.8°N to 83.8°SFinal inclination 96.2°
Mass
218 kg
Operator
SAMSO
Built by
Boeing/Kent
Bus
S3
Programme
STP1
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 96.2°, allowed a re-entry anywhere between 83.8°N and 83.8°S.
Life in orbit
2 years, 4 monthsOPS 5547’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 1 May 1978
2 entriesFrom the same launch
1975-114
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1978-0201
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1978-0201
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.