CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Orbital Register seal
Entry no.
1983-0128

SL-12 R/B(1)

SL-12 R/B(1) (NORAD 13977) re-entered Earth’s atmosphere on 10 April 1983, after 2 days in orbit.

Official date
NORAD number
13977
International designator
1983-028C
Object type
Rocket body
Country
USSR
Launched
8 Apr 1983Baikonur Cosmodrome
Re-entered (UTC)
10 Apr 1983UTC calendar day
Time in orbit
2 days2 days
How it ended
Re-entered (natural decay)
Latitude range
51.6°N to 51.6°SFinal inclination 51.6°
Mass
4,185 kg

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 51.6°, allowed a re-entry anywhere between 51.6°N and 51.6°S.

Life in orbit

2 days

Also ended on 10 Apr 1983

3 entries
1983-0125CZ-2B R/B1983-0126COSMOS 1220 DEB1983-0127SL-4 DEB

From the same launch

1983-028
1984-0217SL-12 R/B(AUX MOTOR)1984-0270SL-12 R/B(AUX MOTOR)
Orbital Register seal
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1983-0128
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.