CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2018-0168
IRIDIUM 12
IRIDIUM 12 (NORAD 24837) re-entered Earth’s atmosphere on 2 September 2018, after 21 years, 2 months in orbit.
Official date
NORAD number
24837
International designator
1997-030B
Object type
Spacecraft
Country
United States
Launched
18 Jun 1997Baikonur Cosmodrome
Re-entered (UTC)
2 Sep 2018UTC calendar day
Time in orbit
21 years, 2 months7,746 days
How it ended
Re-entered (natural decay)
Latitude range
86.4°N to 86.4°SFinal inclination 86.4°
Mass
662 kg
Operator
Built by
Motorola / LMMS/Sunnyvale
Bus
LM700
Programme
Iridium
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 86.4°, allowed a re-entry anywhere between 86.4°N and 86.4°S.
Life in orbit
21 years, 2 monthsIRIDIUM 12’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 2 Sep 2018
1 entryFrom the same launch
1997-030
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2018-0168
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2018-0168
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.