COSMOS 2251 DEB, 34139
Orbit data source: Space-Track
COSMOS 2251 DEB, 34139 is space debris in LEO originally from a launch on Wed, 16 Jun 1993 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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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34139 intel report (Beta)
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Identifier
Orbit
Country
CISRelated 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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 COSMOS 2251 DEB
1 34139U 93036LL 26262.94306880 .00002977 00000-0 58679-3 0 9990
2 34139 74.0278 76.3256 0041180 80.7807 78.5771 14.62427930922560Epoch: 2026-09-19T22:38Z
TLE epoch observation values (Epoch: 2026-09-19T22:38:01.144Z)
Latitude
19.37465°
Longitude
-87.76899°
Altitude
681.872 km
Speed
7.521 km/s
True Right ascension
16h 42m 19s
True Declination
19° 15' 58"
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
13:23:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
712.018 km
Perigee altitude
653.863 km
Semi-major axis
7,061.078 km
Eccentricity
0.00412
Inclination
74.0278°
RAAN
76.3256°
Arg. of periapsis
80.7807°
True anomaly
79.04011°
Mean anomaly
78.5771°
Eccentric anomaly
78.80856°
Mean motion
3.65794 °/min
Orbital period
98.42 mins
BSTAR
0.00058679
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Other satellites on launch #36 in the year 1993 (1993-06-16 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.COSMOS 2251 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-09-20 23:07:06.311Z | 335.838° NNW | 2026-09-20 23:10:06.311Z | 212.176° SW | 74.441° | 2026-09-20 23:14:06.311Z | 167.719° S |
| 5 mins | 2026-09-21 11:49:06.311Z | 130.845° SE | 2026-09-21 11:51:06.311Z | 94.559° ESE | 23.273° | 2026-09-21 11:54:06.311Z | 50.648° ENE |
| 7 mins | 2026-09-21 13:28:06.311Z | 241.918° WSW | 2026-09-21 13:31:06.311Z | 300.001° NW | 32.39° | 2026-09-21 13:35:06.311Z | 359.649° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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