CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1986-0410
MOLNIYA 3-4
MOLNIYA 3-4 (NORAD 8521) re-entered Earth’s atmosphere on 17 October 1986, after 10 years, 9 months in orbit.
Official date
NORAD number
8521
International designator
1975-125A
Object type
Spacecraft
Country
USSR
Launched
27 Dec 1975Plesetsk Cosmodrome
Re-entered (UTC)
17 Oct 1986UTC calendar dayAlso recorded as 12 Aug 1986
Time in orbit
10 years, 9 months3,947 days
How it ended
Re-entered (natural decay)
Latitude range
63.4°N to 63.4°SFinal inclination 63.4°
Mass
1,750 kg
Operator
OKB-10 / MSvyaz
Built by
OKB-10
Bus
Molniya-3
Programme
Molniya-3
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 63.4°, allowed a re-entry anywhere between 63.4°N and 63.4°S.
Life in orbit
10 years, 9 monthsMOLNIYA 3-4’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 17 Oct 1986
1 entryFrom the same launch
1975-125
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1986-0410
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1986-0410
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.