Key statistics
Satellite IRIDIUM 911 at a glance.
Uptime
10406
Days in orbit
Revolutions
≈ 14.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
86.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for IRIDIUM 911.
Object identification
Identified? True
Debris? False
Object name: IRIDIUM 911
International designator: 1997-030G
Object number (NORAD): 24842
Object ID (CCSDS): 24842
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 99.455 minutes
Inclination: 86.4457 deg
SMA: 7110.669 km
Apoapsis: 741.787 km
Periapsis: 723.281 km
RAAN: 128.4917 deg
Eccentricy: 0.00130127
Argument of periapsis: 212.1578 deg
Mean anomaly: 147.8834 deg
Mean motion: 14.47895071 rev/day
Mean motion (dot): 0.0000102 rev/day2
B* drag term: 0.00026969994 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 4:23 p.m. UTC
TLE line 0: 0 IRIDIUM 911
TLE line 1: 1 24842U 97030G 25347.68270844 .00001020 00000-0 26970-3 0 9999
TLE line 2: 2 24842 86.4457 128.4917 0013013 212.1578 147.8834 14.47895071501054
Live tracking on map
Real-time ground track for satellite IRIDIUM 911.
In-orbit conjunctions
A list of the most updated potential collisions computed for object IRIDIUM 911.
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 911 was lifted into orbit during the mission ‘Proton-K/17S40 | Iridium 09 to 14 & Iridium 16’, on board a Proton-K/17S40 space rocket.
The launch took place on June 18, 1997, 2:02 p.m. from 81/23 (81L).
For more information about the launch, click the button.
Proton-K/17S40 | Iridium 09 to 14 & Iridium 16
Agency: N/A
Status: Launch Successful
Launch date: June 18, 1997, 2:02 p.m. UTC
Rocket: Proton-K/17S40
Launch pad: 81/23 (81L)
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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