Key statistics
Satellite IRIDIUM 28 at a glance.
Uptime
10096
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
86.4
Latest
Satellite identification and parameters
Extended collection of information and parameters for IRIDIUM 28.
Object identification
Identified? True
Debris? False
Object name: IRIDIUM 28
International designator: 1997-051E
Object number (NORAD): 24948
Object ID (CCSDS): 24948
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 100.184 minutes
Inclination: 86.3981 deg
SMA: 7145.382 km
Apoapsis: 768.698 km
Periapsis: 765.795 km
RAAN: 159.2191 deg
Eccentricy: 0.0002032
Argument of periapsis: 101.5638 deg
Mean anomaly: 258.5788 deg
Mean motion: 14.37356938 rev/day
Mean motion (dot): 0.00000474 rev/day2
B* drag term: 0.00015213 1/REarth
Two-line elements (TLE)
Creation date: May 6, 2025, 3:54 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 5, 2025, 6:52 p.m. UTC
TLE line 0: 0 IRIDIUM 28
TLE line 1: 1 24948U 97051E 25125.78644267 .00000474 00000-0 15213-3 0 9998
TLE line 2: 2 24948 86.3981 159.2191 0002032 101.5638 258.5788 14.37356938447752
Live tracking on map
Real-time ground track for satellite IRIDIUM 28.
In-orbit conjunctions
A list of the most updated potential collisions computed for object IRIDIUM 28.
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 28 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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