CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1999-0331
SL-4 R/B(1)
SL-4 R/B(1) (NORAD 25680) re-entered Earth’s atmosphere on 14 October 1999, after 5 months in orbit.
Official date
NORAD number
25680
International designator
1999-019E
Object type
Rocket body
Country
Russia
Launched
15 Apr 1999Baikonur Cosmodrome
Re-entered (UTC)
14 Oct 1999UTC calendar day
Time in orbit
5 months182 days
How it ended
Re-entered (natural decay)
Latitude range
51.9°N to 51.9°SFinal inclination 51.9°
Mass
2,350 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 51.9°, allowed a re-entry anywhere between 51.9°N and 51.9°S.
Life in orbit
5 monthsSL-4 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 14 Oct 1999
1 entryFrom the same launch
1999-019
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1999-0331
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1999-0331
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.