CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2021-0153
SL-8 R/B
SL-8 R/B (NORAD 25723) re-entered Earth’s atmosphere on 23 April 2021, after 21 years, 11 months in orbit.
Official date
NORAD number
25723
International designator
1999-022C
Object type
Rocket body
Country
Russia
Launched
28 Apr 1999Kapustin Yar
Re-entered (UTC)
23 Apr 2021UTC calendar day
Time in orbit
21 years, 11 months8,031 days
How it ended
Re-entered (natural decay)
Latitude range
48.4°N to 48.4°SFinal inclination 48.4°
Mass
20,143 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 48.4°, allowed a re-entry anywhere between 48.4°N and 48.4°S.
Life in orbit
21 years, 11 monthsSL-8 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 23 Apr 2021
3 entriesFrom the same launch
1999-022
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2021-0153
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2021-0153
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.