COSMOS 2251 DEB, 34635
Orbit data source: Space-Track
COSMOS 2251 DEB, 34635 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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34635 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: 10 hours ago
TLE from 10 hours ago
0 COSMOS 2251 DEB
1 34635U 93036XG 26177.84239157 .00005665 00000-0 92504-3 0 9999
2 34635 74.0444 50.8782 0029544 71.6613 53.2380 14.70835029761008Epoch: 2026-06-26T20:13Z
TLE epoch observation values (Epoch: 2026-06-26T20:13:02.631Z)
Latitude
51.91837°
Longitude
-8.62612°
Altitude
654.061 km
Speed
7.542 km/s
True Right ascension
13h 58m 23s
True Declination
51° 44' 56"
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
17:10:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
676.77 km
Perigee altitude
635.207 km
Semi-major axis
7,034.125 km
Eccentricity
0.00295
Inclination
74.0444°
RAAN
50.8782°
Arg. of periapsis
71.6613°
True anomaly
53.50982°
Mean anomaly
53.238°
Eccentric anomaly
53.37385°
Mean motion
3.67898 °/min
Orbital period
97.85 mins
BSTAR
0.00092504
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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 | 2026-06-27 17:01:19.971Z | 215.176° SW | 2026-06-27 17:04:19.971Z | 313.844° NW | 41.148° | 2026-06-27 17:08:19.971Z | 12.021° NNE |
| 4 mins | 2026-06-28 01:36:19.971Z | 35.242° NE | 2026-06-28 01:38:19.971Z | 66.051° ENE | 15.625° | 2026-06-28 01:40:19.971Z | 93.549° ESE |
| 6 mins | 2026-06-28 03:15:19.971Z | 319.916° NNW | 2026-06-28 03:18:19.971Z | 233.625° WSW | 36.349° | 2026-06-28 03:21:19.971Z | 184.982° SSW |
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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