CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1970-0268

OPS 4992

OPS 4992 (NORAD 4721) came down while still attached to its host on 11 December 1970, after 23 days in orbit.

Official date
NORAD number
4721
International designator
1970-098A
Object type
Spacecraft
Country
United States
Launched
18 Nov 1970Vandenberg
Re-entered (UTC)
11 Dec 1970UTC calendar day
Time in orbit
23 days23 days
How it ended
Came down attached to its host
Latitude range
83.0°N to 83.0°SFinal inclination 83.0°
Mass
345 kg
Operator
NRO / CIA
Built by
LMSC
Bus
CORONA KH-4B
Programme
CORONA CR

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 83.0°, allowed a re-entry anywhere between 83.0°N and 83.0°S.

Life in orbit

23 days

OPS 4992’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 11 Dec 1970

1 entry
1970-0269SL-6 R/B(1)

From the same launch

1970-098
1977-0382OPS 6829
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1970-0268
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