CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1999-0189
SL-3 R/B
SL-3 R/B (NORAD 4120) re-entered Earth’s atmosphere on 15 June 1999, after 29 years, 8 months in orbit.
Official date
NORAD number
4120
International designator
1969-084B
Object type
Rocket body
Country
USSR
Launched
6 Oct 1969Plesetsk Cosmodrome
Re-entered (UTC)
15 Jun 1999UTC calendar day
Time in orbit
29 years, 8 months10,844 days
How it ended
Re-entered (natural decay)
Latitude range
81.2°N to 81.2°SFinal inclination 81.2°
Mass
1,440 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 81.2°, allowed a re-entry anywhere between 81.2°N and 81.2°S.
Life in orbit
29 years, 8 monthsSL-3 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 15 Jun 1999
3 entriesFrom the same launch
1969-084
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1999-0189
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1999-0189
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.