CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1991-0015

SL-4 R/B

SL-4 R/B (NORAD 21054) re-entered Earth’s atmosphere on 15 January 1991, after 1 day in orbit.

Official date
NORAD number
21054
International designator
1991-002B
Object type
Rocket body
Country
USSR
Launched
14 Jan 1991Baikonur Cosmodrome
Re-entered (UTC)
15 Jan 1991UTC calendar day
Time in orbit
1 day1 days
How it ended
Re-entered (natural decay)
Latitude range
51.6°N to 51.6°SFinal inclination 51.6°
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 51.6°, allowed a re-entry anywhere between 51.6°N and 51.6°S.

Life in orbit

1 day

From the same launch

1991-002
1991-0120PROGRESS-M 6
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0015
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