CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
2025-0352

IRIDIUM 921

IRIDIUM 921 (NORAD 24873) re-entered Earth’s atmosphere on 13 February 2025 over the South Pacific Ocean, after 27 years, 7 months in orbit.

Official date
NORAD number
24873
International designator
1997-034E
Object type
Spacecraft
Country
United States
Launched
9 Jul 1997Vandenberg
Re-entered (UTC)
13 Feb 2025Recorded time 16:13 UTC
Time in orbit
27 years, 7 months10,081 days
How it ended
Re-entered (natural decay)
Latitude range
86.3°N to 86.3°SFinal inclination 86.3°
Mass
662 kg
Operator
Iridium
Built by
Motorola / LMMS/Sunnyvale
Bus
LM700
Programme
Iridium

Where it came down

Recorded position

Recorded position 51.0°S, 158.0°W at 16:13 UTC. Its final orbit, inclined at 86.3°, allowed a re-entry anywhere between 86.3°N and 86.3°S.

Life in orbit

27 years, 7 months

IRIDIUM 921’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 13 Feb 2025

5 entries
2025-0353STARLINK-11862025-0354STARLINK-17252025-0355STARLINK-20422025-0356STARLINK-20662025-0357STARLINK-2305

From the same launch

1997-034
1998-0072DELTA 2 R/B2018-0156IRIDIUM 182018-0195IRIDIUM 15In orbitIridium SV017In orbitIridium SV020
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2025-0352
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