CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0195
PAC 1
PAC 1 (NORAD 4066) came down while still attached to its host on 28 April 1977, after 7 years, 8 months in orbit.
Official date
NORAD number
4066
International designator
1969-068B
Object type
Spacecraft
Country
United States
Launched
9 Aug 1969Cape Canaveral
Re-entered (UTC)
28 Apr 1977UTC calendar day
Time in orbit
7 years, 8 months2,819 days
How it ended
Came down attached to its host
Latitude range
33.0°N to 33.0°SFinal inclination 33.0°
Mass
118 kg
Operator
GSFC
Built by
GSFC
Bus
Delta Attached
Programme
Delta Attached
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 33.0°, allowed a re-entry anywhere between 33.0°N and 33.0°S.
Life in orbit
7 years, 8 monthsPAC 1’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1969-068
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0195
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0195
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.