CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1978-0526

OPS 7705

OPS 7705 (NORAD 6931) re-entered Earth’s atmosphere on 26 December 1978 over North America, after 5 years, 1 month in orbit.

Official date
NORAD number
6931
International designator
1973-088C
Object type
Spacecraft
Country
United States
Launched
10 Nov 1973Vandenberg
Re-entered (UTC)
26 Dec 1978UTC calendar day
Time in orbit
5 years, 1 month1,872 days
How it ended
Re-entered (natural decay)
Latitude range
83.8°N to 83.8°SFinal inclination 96.2°
Mass
168 kg
Operator
NRO / SAFSP
Built by
LMSC / Motorola
Bus
P-11 H
Programme
EHH B

Where it came down

Recorded position

Recorded position 63.0°N, 97.0°W. Its final orbit, inclined at 96.2°, allowed a re-entry anywhere between 83.8°N and 83.8°S.

Life in orbit

5 years, 1 month

OPS 7705’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 26 Dec 1978

1 entry
1978-0525THORAD AGENA D DEB

From the same launch

1973-088
1973-0498TITAN 3D R/B1974-0069OPS 6630 (1)
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1978-0526
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