CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1968-0304
OPS 4740
OPS 4740 (NORAD 3604) came down while still attached to its host on 28 December 1968, after 16 days in orbit.
Official date
NORAD number
3604
International designator
1968-112A
Object type
Spacecraft
Country
United States
Launched
12 Dec 1968Vandenberg
Re-entered (UTC)
28 Dec 1968UTC calendar day
Time in orbit
16 days16 days
How it ended
Came down attached to its host
Latitude range
81.0°N to 81.0°SFinal inclination 81.0°
Mass
210 kg
Operator
NRO / CIA
Built by
LMSC
Bus
CORONA KH-4A
Programme
CORONA J-2
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 81.0°, allowed a re-entry anywhere between 81.0°N and 81.0°S.
Life in orbit
16 daysAlso ended on 28 Dec 1968
1 entryFrom the same launch
1968-112Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1968-0304
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1968-0304
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.