CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1988-0121
SL-8 R/B
SL-8 R/B (NORAD 6351) re-entered Earth’s atmosphere on 2 March 1988, after 15 years, 1 month in orbit.
Official date
NORAD number
6351
International designator
1973-005B
Object type
Rocket body
Country
USSR
Launched
26 Jan 1973Kapustin Yar
Re-entered (UTC)
2 Mar 1988UTC calendar day
Time in orbit
15 years, 1 month5,514 days
How it ended
Re-entered (natural decay)
Latitude range
50.6°N to 50.6°SFinal inclination 50.6°
Mass
1,434 kg
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 50.6°, allowed a re-entry anywhere between 50.6°N and 50.6°S.
Life in orbit
15 years, 1 monthSL-8 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 2 Mar 1988
3 entries
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1988-0121
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1988-0121
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.