CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1971-0249

SL-4 R/B

SL-4 R/B (NORAD 5537) re-entered Earth’s atmosphere on 13 October 1971, after 6 days in orbit.

Official date
NORAD number
5537
International designator
1971-085B
Object type
Rocket body
Country
USSR
Launched
7 Oct 1971Plesetsk Cosmodrome
Re-entered (UTC)
13 Oct 1971UTC calendar day
Time in orbit
6 days6 days
How it ended
Re-entered (natural decay)
Latitude range
65.4°N to 65.4°SFinal inclination 65.4°
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 65.4°, allowed a re-entry anywhere between 65.4°N and 65.4°S.

Life in orbit

6 days

Also ended on 13 Oct 1971

4 entries
1971-0248COSMOS 3621971-0247TITAN 3C TRANSTAGE DEB1971-0250COSMOS 441 DEB1971-0251COSMOS 441 DEB

From the same launch

1971-085
1971-0259COSMOS 4431971-0266Kapsula Kosmosa-443
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1971-0249
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