RECORD OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry number
Certificate pending
SL-26 R/B
SL-26 R/B (NORAD 37399) re-entered Earth’s atmosphere on 22 August 2026, after 15 years, 3 months in orbit.
Official date
NORAD number
37399
International designator
2011-018B
Object type
Rocket body
Country
Russia
Launched
4 May 2011Plesetsk Cosmodrome
Re-entered (UTC)
22 Aug 2026UTC calendar day
Time in orbit
15 years, 3 months5,589 days
How it ended
Re-entered (natural decay)
Latitude range
62.4°N to 62.4°SFinal inclination 62.4°
Mass
6,600 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 62.4°, allowed a re-entry anywhere between 62.4°N and 62.4°S.
Life in orbit
15 years, 3 monthsSL-26 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 22 Aug 2026
5 entriesFrom the same launch
2011-018
Recorded in the Orbital Register™. The certificate and its permanent entry number follow once the record is complete.
orbitalradar.com/register/norad/37399
© 2026 Orbital Radar.
orbitalradar.com/register/norad/37399
© 2026 Orbital Radar.