CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
2023-0310

SOICAL (CYLINDER)

SOICAL (CYLINDER) (NORAD 4166) re-entered Earth’s atmosphere on 14 February 2023, after 53 years, 4 months in orbit.

Official date
NORAD number
4166
International designator
1969-082J
Object type
Spacecraft
Country
United States
Launched
30 Sep 1969Vandenberg
Re-entered (UTC)
14 Feb 2023UTC calendar day
Time in orbit
53 years, 4 months19,495 days
How it ended
Re-entered (natural decay)
Latitude range
69.9°N to 69.9°SFinal inclination 69.9°
Mass
3 kg
Operator
NRL
Built by
NRL
Bus
SOICAL
Programme
NRL Cal

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 69.9°, allowed a re-entry anywhere between 69.9°N and 69.9°S.

Life in orbit

53 years, 4 months

SOICAL (CYLINDER)’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 14 Feb 2023

9 entries
2023-0312FLOCK 3P 342023-0314DAVINCI2023-0315FLOCK 3K 122023-0316AEROCUBE 14B2023-0311FENGYUN 1C DEB2023-0313CZ-2D DEB2023-0317FREGAT DEB2023-0319H-2A DEB2023-0318OBJECT TQ

From the same launch

1969-082
1970-0243OPS 1807In orbitNRL PL176In orbitTimation 2In orbitPOPPY 6 AlfaIn orbitPOPPY 6 BravoIn orbitPOPPY 6 CharlieIn orbitPOPPY 6 Delta
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2023-0310
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