CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1977-0521

OPS 4800

OPS 4800 (NORAD 10111) was deorbited in a controlled re-entry on 23 December 1977, after 5 months in orbit.

Controlled re-entryOfficial date
NORAD number
10111
International designator
1977-056A
Object type
Spacecraft
Country
United States
Launched
27 Jun 1977Vandenberg
Re-entered (UTC)
23 Dec 1977UTC calendar day
Time in orbit
5 months179 days
How it ended
Deorbited (controlled re-entry)
Latitude range
83.1°N to 83.1°SFinal inclination 96.9°
Mass
8,211 kg
Operator
NRO / SAFSP
Built by
LMSC
Bus
KH-9
Programme
Hex III

Where it came down

Latitude band its orbit allowed
Exact position not recorded

No position was recorded for this re-entry. Its final orbit, inclined at 96.9°, allowed a re-entry anywhere between 83.1°N and 83.1°S.

Life in orbit

5 months

OPS 4800’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 23 Dec 1977

1 entry
1977-0520SL-8 R/B

From the same launch

1977-056
1977-0270TITAN 3D R/B
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0521
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