COSMOS 2251 DEB, 34478 (Decayed)
Orbit data source: Space-Track
COSMOS 2251 DEB, 34478 was 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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34478 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Unknown
Mission
Decayed spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.050 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 month ago
TLE from 1 month ago
0 COSMOS 2251 DEB
1 34478U 93036TX 26241.85969944 .07200794 17192+0 94541-2 0 9999
2 34478 74.0026 171.8464 0020008 206.0972 153.9267 16.12756781929551Epoch: 2026-08-29T20:37Z
TLE epoch observation values (Epoch: 2026-08-29T20:37:58.031Z)
Latitude
-0.00005°
Longitude
-115.709°
Altitude
254.011 km
Speed
7.748 km/s
True Right ascension
11h 27m 23s
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
03:58:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
249.962 km
Perigee altitude
223.492 km
Semi-major axis
6,614.864 km
Eccentricity
0.002
Inclination
74.0026°
RAAN
171.8464°
Arg. of periapsis
206.0972°
True anomaly
154.02725°
Mean anomaly
153.9267°
Eccentric anomaly
153.977°
Mean motion
4.03424 °/min
Orbital period
89.24 mins
BSTAR
0.0094541
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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
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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. |
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| This satellite is decayed. |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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