CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Orbital Register seal
Entry no.
1990-0461

SL-12 R/B(AUX MOTOR)

SL-12 R/B(AUX MOTOR) (NORAD 20400) re-entered Earth’s atmosphere on 10 October 1990, after 9 months in orbit.

Official date
NORAD number
20400
International designator
1989-101F
Object type
Rocket body
Country
USSR
Launched
27 Dec 1989Baikonur Cosmodrome
Re-entered (UTC)
10 Oct 1990UTC calendar dayAlso recorded as 31 Jul 1991
Time in orbit
9 months287 days
How it ended
Re-entered (natural decay)
Latitude range
—
Mass
120 kg

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

9 months

SL-12 R/B(AUX MOTOR)’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 10 Oct 1990

3 entries
1990-0460MOLNIYA 1-331990-0463STS 411990-0462DELTA 2 R/B(1)

From the same launch

1989-101
1989-1060SL-12 R/B(1)2000-0233SL-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/1990-0461
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.