CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Orbital Register seal
Entry no.
1981-0335

COSMOS 1277

COSMOS 1277 (NORAD 12520) landed on 2 July 1981, after 15 days in orbit.

Official date
NORAD number
12520
International designator
1981-056A
Object type
Spacecraft
Country
USSR
Launched
17 Jun 1981Baikonur Cosmodrome
Landed (UTC)
2 Jul 1981UTC calendar dayAlso recorded as 1 Jul 1981
Time in orbit
15 days15 days
How it ended
Landed
Latitude range
70.4°N to 70.4°SFinal inclination 70.4°
Mass
2,655 kg
Operator
GUKOS
Built by
TsSKB
Bus
Zenit-6
Programme
Zenit-6

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 70.4°, allowed a re-entry anywhere between 70.4°N and 70.4°S.

Life in orbit

15 days

Also ended on 2 Jul 1981

1 entry
1981-0336SL-4 DEB

From the same launch

1981-056
1981-0325SL-4 R/B
Orbital Register seal
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0335
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.