CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1973-0056

SL-4 R/B

SL-4 R/B (NORAD 6377) re-entered Earth’s atmosphere on 9 March 1973, after 8 days in orbit.

Official date
NORAD number
6377
International designator
1973-011B
Object type
Rocket body
Country
USSR
Launched
1 Mar 1973Plesetsk Cosmodrome
Re-entered (UTC)
9 Mar 1973UTC calendar day
Time in orbit
8 days8 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

8 days

Also ended on 9 Mar 1973

1 entry
1973-0055DELTA 1 DEB *

From the same launch

1973-011
1973-0058COSMOS 550
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1973-0056
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