CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1974-0071
OPS 6889
OPS 6889 (NORAD 7121) came down while still attached to its host on 17 March 1974, after 1 month in orbit.
Official date
NORAD number
7121
International designator
1974-007A
Object type
Spacecraft
Country
United States
Launched
13 Feb 1974Vandenberg
Re-entered (UTC)
17 Mar 1974UTC calendar day
Time in orbit
1 month32 days
How it ended
Came down attached to its host
Latitude range
69.6°N to 69.6°SFinal inclination 110.4°
Mass
2,400 kg
Operator
NRO / SAFSP
Built by
LMSC
Bus
KH-8
Programme
KH8D
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 110.4°, allowed a re-entry anywhere between 69.6°N and 69.6°S.
Life in orbit
1 monthOPS 6889’s lowest and highest points above Earth, week by week, from its tracking history.
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1974-0071
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1974-0071
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.