CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1999-0175
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 20055) re-entered Earth’s atmosphere on 4 June 1999, after 9 years, 11 months in orbit.
Official date
NORAD number
20055
International designator
1989-043D
Object type
Rocket body
Country
USSR
Launched
8 Jun 1989Plesetsk Cosmodrome
Re-entered (UTC)
4 Jun 1999UTC calendar dayAlso recorded as 3 Jun 1999
Time in orbit
9 years, 11 months3,648 days
How it ended
Re-entered (natural decay)
Latitude range
63.4°N to 63.4°SFinal inclination 63.4°
Mass
4,500 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 63.4°, allowed a re-entry anywhere between 63.4°N and 63.4°S.
Life in orbit
9 years, 11 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1989-043
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1999-0175
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1999-0175
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.