CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Orbital Register seal
Entry no.
1976-0100

OSCAR 4

OSCAR 4 (NORAD 1902) re-entered Earth’s atmosphere on 12 April 1976, after 10 years, 3 months in orbit.

Official date
NORAD number
1902
International designator
1965-108C
Object type
Spacecraft
Country
United States
Launched
21 Dec 1965Cape Canaveral
Re-entered (UTC)
12 Apr 1976UTC calendar day
Time in orbit
10 years, 3 months3,765 days
How it ended
Re-entered (natural decay)
Latitude range
—
Mass
18 kg
Operator
OSCAR
Built by
OSCAR-TRW
Bus
OSCAR
Programme
OSCAR

Where it came down

Not on record

No position was recorded for this re-entry. Its final orbit is not on record.

Life in orbit

10 years, 3 months

Also ended on 12 Apr 1976

6 entries
1976-0105COSMOS 8111976-0099SL-8 DEB1976-0101TITAN 3C TRANSTAGE DEB1976-0102COSMOS 699 DEB1976-0103COSMOS 699 DEB1976-0104COSMOS 699 DEB

From the same launch

1965-108
1968-0088LES 31977-0313LES 4In orbitOV2-3
Orbital Register seal
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1976-0100
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.