IRIDIUM 33 DEB, 39777
Orbit data source: Space-Track
IRIDIUM 33 DEB, 39777 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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39777 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 shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 6 days ago
TLE from 6 days ago
0 IRIDIUM 33 DEB
1 39777U 97051AAJ 25302.68415606 .00010605 00000-0 23842-2 0 9996
2 39777 85.9638 196.3919 0061891 338.8117 21.0526 14.55201885595440Epoch: 2025-10-29T16:25Z
TLE epoch observation values (Epoch: 2025-10-29T16:25:11.083Z)
Latitude
-0.00012°
Longitude
-88.15805°
Altitude
670.877 km
Speed
7.543 km/s
True Right ascension
13h 05m 34s
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
10:48:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
749.496 km
Perigee altitude
661.811 km
Semi-major axis
7,083.79 km
Eccentricity
0.00619
Inclination
85.9638°
RAAN
196.3919°
Arg. of periapsis
338.8117°
True anomaly
21.30922°
Mean anomaly
21.0526°
Eccentric anomaly
21.18072°
Mean motion
3.64036 °/min
Orbital period
98.89 mins
BSTAR
0.0023842
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-11-04 16:07:32.070Z | 125.01° SE | 2025-11-04 16:10:32.070Z | 80.948° E | 19.902° | 2025-11-04 16:13:32.070Z | 38.357° NE |
| 7 mins | 2025-11-04 17:46:32.070Z | 221.981° SW | 2025-11-04 17:49:32.070Z | 279.355° WNW | 30.168° | 2025-11-04 17:53:32.070Z | 342.996° N |
| 8 mins | 2025-11-05 04:07:32.070Z | 17.523° NNE | 2025-11-05 04:10:32.070Z | 69.268° E | 34.791° | 2025-11-05 04:15:32.070Z | 154.673° SSE |
| 5 mins | 2025-11-05 05:47:32.070Z | 311.373° NW | 2025-11-05 05:49:32.070Z | 283.908° WNW | 18.03° | 2025-11-05 05:52:32.070Z | 242.571° WSW |
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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