Key statistics
Satellite IRIDIUM 33 DEB at a glance.
Uptime
10159
Days in orbit
Revolutions
≈ 14.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
86.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for IRIDIUM 33 DEB.
Object identification
Identified? True
Debris? True
Object name: IRIDIUM 33 DEB
International designator: 1997-051QQ
Object number (NORAD): 35618
Object ID (CCSDS): 35618
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: SMALL
Orbital parameters
Period: 99.21 minutes
Inclination: 86.3394 deg
SMA: 7099.016 km
Apoapsis: 740.035 km
Periapsis: 701.727 km
RAAN: 69.6393 deg
Eccentricy: 0.0026981
Argument of periapsis: 240.1672 deg
Mean anomaly: 119.6851 deg
Mean motion: 14.51461596 rev/day
Mean motion (dot): 0.0000109 rev/day2
B* drag term: 0.0002667 1/REarth
Two-line elements (TLE)
Creation date: June 21, 2025, 6:30 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: June 21, 2025, 10:55 a.m. UTC
TLE line 0: 0 IRIDIUM 33 DEB
TLE line 1: 1 35618U 97051QQ 25172.45497399 .00001090 00000-0 26670-3 0 9996
TLE line 2: 2 35618 86.3394 69.6393 0026981 240.1672 119.6851 14.51461596628652
Live tracking on map
Real-time ground track for satellite IRIDIUM 33 DEB.
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 33 DEB was lifted into orbit during the mission ‘Proton-K/17S40 | Iridium 27 to 33’, on board a Proton-K/17S40 space rocket.
The launch took place on Sept. 14, 1997, 1:36 a.m. from 81/23 (81L).
For more information about the launch, click the button.

Proton-K/17S40 | Iridium 27 to 33
Agency: N/A
Status: Launch Successful
Launch date: Sept. 14, 1997, 1:36 a.m. UTC
Rocket: Proton-K/17S40
Launch pad: 81/23 (81L)
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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