COSMOS 2251 DEB, 34963
Orbit data source: Space-Track
COSMOS 2251 DEB, 34963 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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34963 intel report (Beta)
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Edit Public Description
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
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 week ago
TLE from 1 week ago
0 COSMOS 2251 DEB
1 34963U 93036AES 25295.29707813 .00004872 00000-0 12415-2 0 9992
2 34963 74.1692 138.6622 0040625 346.0943 13.9095 14.50359485860555Epoch: 2025-10-22T07:07Z
TLE epoch observation values (Epoch: 2025-10-22T07:07:47.550Z)
Latitude
-0.00006°
Longitude
0.74135°
Altitude
699.105 km
Speed
7.521 km/s
True Right ascension
09h 14m 38s
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
14:50:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
750.916 km
Perigee altitude
693.227 km
Semi-major axis
7,100.208 km
Eccentricity
0.00406
Inclination
74.1692°
RAAN
138.6622°
Arg. of periapsis
346.0943°
True anomaly
14.02196°
Mean anomaly
13.9095°
Eccentric anomaly
13.96568°
Mean motion
3.62774 °/min
Orbital period
99.24 mins
BSTAR
0.0012415
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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 | 2025-10-30 22:36:42.635Z | 10.699° NNE | 2025-10-30 22:39:42.635Z | 53.312° ENE | 24.528° | 2025-10-30 22:43:42.635Z | 114.697° SE |
| 8 mins | 2025-10-31 00:17:42.635Z | 316.416° NNW | 2025-10-31 00:21:42.635Z | 247.972° W | 28.977° | 2025-10-31 00:25:42.635Z | 196.167° SSW |
| 8 mins | 2025-10-31 13:04:42.635Z | 186.012° SSW | 2025-10-31 13:08:42.635Z | 76.94° E | 42.474° | 2025-10-31 13:12:42.635Z | 24.606° NE |
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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