IRIDIUM 33 DEB, 39778
Orbit data source: Space-Track
IRIDIUM 33 DEB, 39778 is space debris in LEO originally from a launch on Sun, 14 Sep 1997 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). The debris from Iridium 33, an American commercial communications satellite, has been tracked extensively since its accidental collision with the defunct Russian satellite Cosmos 2251 in 2009. This event, occurring at high speed in low Earth orbit (LEO), generated thousands of pieces of space debris, significantly increasing the risk of further collisions. The Iridium 33 debris cloud has impacted space traffic management and orbital debris mitigation strategies, making it a subject of ongoing study in space situational awareness.
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39778 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 IRIDIUM 33 DEB
1 39778U 97051AAK 25259.77014545 .00003656 00000-0 87888-3 0 9994
2 39778 86.3698 80.9511 0006406 330.9621 29.1228 14.53136218594297Epoch: 2025-09-16T18:29Z
TLE epoch observation values (Epoch: 2025-09-16T18:29:00.566Z)
Latitude
-0.00005°
Longitude
167.74306°
Altitude
714.531 km
Speed
7.5 km/s
True Right ascension
05h 23m 48s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
04:54:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
716.904 km
Perigee altitude
707.82 km
Semi-major axis
7,090.499 km
Eccentricity
0.00064
Inclination
86.3698°
RAAN
80.9511°
Arg. of periapsis
330.9621°
True anomaly
29.15855°
Mean anomaly
29.1228°
Eccentric anomaly
29.14067°
Mean motion
3.6352 °/min
Orbital period
99.03 mins
BSTAR
0.00087888
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Other satellites on launch #51 in the year 1997 (1997-09-14 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.IRIDIUM 33 DEB Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-09-17 12:46:18.503Z | 183.12° SSW | 2025-09-17 12:50:18.503Z | 198.73° SSW | 43.851° | 2025-09-17 12:55:18.503Z | 1.304° NNE |
| 4 mins | 2025-09-17 23:11:18.503Z | 54.344° ENE | 2025-09-17 23:12:18.503Z | 69.36° E | 17.599° | 2025-09-17 23:15:18.503Z | 112.725° SE |
| 7 mins | 2025-09-18 00:49:18.503Z | 334.951° NNW | 2025-09-18 00:52:18.503Z | 276.098° WNW | 34.073° | 2025-09-18 00:56:18.503Z | 206.283° SW |
| 6 mins | 2025-09-18 11:56:18.503Z | 134.561° SE | 2025-09-18 11:59:18.503Z | 78.144° E | 27.588° | 2025-09-18 12:02:18.503Z | 29.938° NE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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