CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1991-0133

SL-4 R/B

SL-4 R/B (NORAD 21189) re-entered Earth’s atmosphere on 20 March 1991, after 1 day in orbit.

Official date
NORAD number
21189
International designator
1991-020B
Object type
Rocket body
Country
USSR
Launched
19 Mar 1991Baikonur Cosmodrome
Re-entered (UTC)
20 Mar 1991UTC calendar day
Time in orbit
1 day1 days
How it ended
Re-entered (natural decay)
Latitude range
51.7°N to 51.7°SFinal inclination 51.7°
Mass
2,350 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 51.7°, allowed a re-entry anywhere between 51.7°N and 51.7°S.

Life in orbit

1 day

Also ended on 20 Mar 1991

4 entries
1991-0132COSMOS 21361991-0129COSMOS 249 DEB *1991-0130THORAD AGENA D DEB1991-0131THOR ABLESTAR DEB

From the same launch

1991-020
1991-0198PROGRESS-M 7
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0133
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