Key statistics
Satellite IRIDIUM 921 at a glance.
Uptime
10081
Days in orbit
Revolutions
≈ 16.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
86.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for IRIDIUM 921.
Object identification
Identified? True
Debris? False
Object name: IRIDIUM 921
International designator: 1997-034E
Object number (NORAD): 24873
Object ID (CCSDS): 24873
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Decay date: Feb. 13, 2025
Period: 87.529 minutes
Inclination: 86.3458 deg
SMA: 6530.224 km
Apoapsis: 158.632 km
Periapsis: 145.546 km
RAAN: 164.781 deg
Eccentricy: 0.001002
Argument of periapsis: 285.8836 deg
Mean anomaly: 162.1147 deg
Mean motion: 16.45169503 rev/day
Mean motion (dot): 0.1465779 rev/day2
B* drag term: 0.00037775 1/REarth
Two-line elements (TLE)
Creation date: Feb. 13, 2025, 9:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Feb. 13, 2025, 7:51 a.m. UTC
TLE line 0: 0 IRIDIUM 921
TLE line 1: 1 24873U 97034E 25044.32709811 .14657790 -15441-5 37775-3 0 9995
TLE line 2: 2 24873 86.3458 164.7810 0010020 285.8836 162.1147 16.45169503513045
Live tracking on map
Satellite IRIDIUM 921 has decayed and is no longer in orbit. No tracking available.
In-orbit conjunctions
Satellite IRIDIUM 921 has decayed and is no longer in orbit. No conjunctions available.
Associated space launch
Iridium provides global mobile telecommunications services using a constellation of 66 low earth orbit satellites in a 86.4° inclined orbit. Although 77 satellites were originally envisioned for the system and spawned the name based on the 77th element in the periodic table, the system has been scaled back. Motorola's Satellite Communications Group designed and manufactured the Iridium satellites with Lockheed Martin providing the LM-700A spacecraft buses.
IRIDIUM 921 was lifted into orbit during the mission ‘Delta II | Iridium 15’, on board a Delta II space rocket.
The launch took place on July 9, 1997, 1:04 p.m. from Space Launch Complex 2W.
For more information about the launch, click the button.
Delta II | Iridium 15
Agency: N/A
Status: Launch Successful
Launch date: July 9, 1997, 1:04 p.m. UTC
Rocket: Delta II
Launch pad: Space Launch Complex 2W
Location: Vandenberg SFB, CA, USA
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