COSMOS 2251 DEB, 35996

Orbit data source: Space-Track

COSMOS 2251 DEB, 35996 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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ISO8601 Format

Identifier

35996, 1993-036AWN

Orbit

LEO

Country

CIS

Related business

Russian Space Forces (RU)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1993-06-16 (33 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 6 days ago

TLE from 6 days ago

0 COSMOS 2251 DEB
1 35996U 93036AWN 25349.93410101  .00009536  00000-0  54952-3 0  9996
2 35996  74.0159  96.8248 0087663 187.0066 172.9909 15.09228347723746

Epoch: 2025-12-15T22:25Z

TLE epoch observation values (Epoch: 2025-12-15T22:25:06.327Z)

Latitude

-0.00001°

Longitude

35.72289°

Altitude

601.454 km

Speed

7.526 km/s

True Right ascension

06h 27m 17s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

16:00:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

596.714 km

Perigee altitude

475.489 km

Semi-major axis

6,914.239 km

Eccentricity

0.00877

Inclination

74.0159°

RAAN

96.8248°

Arg. of periapsis

187.0066°

True anomaly

173.11216°

Mean anomaly

172.9909°

Eccentric anomaly

173.05166°

Mean motion

3.77508 °/min

Orbital period

95.36 mins

BSTAR

0.00054952

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Other satellites on launch #36 in the year 1993 (1993-06-16 UTC)

COSMOS 2251 DEB, 34761

COSMOS 2251 DEB, 40807

COSMOS 2251 DEB, 35706

COSMOS 2251 DEB, 38478 (Decayed)

COSMOS 2251 DEB, 35887

COSMOS 2251 DEB, 37982 (Decayed)

COSMOS 2251 DEB, 39109

COSMOS 2251 DEB, 38480 (Decayed)

COSMOS 2251 DEB, 35026

COSMOS 2251 DEB, 35444 (Decayed)

COSMOS 2251 DEB, 40224 (Decayed)

COSMOS 2251 DEB, 33993 (Decayed)

COSMOS 2251 DEB, 35584 (Decayed)

COSMOS 2251 DEB, 37271 (Decayed)

COSMOS 2251 DEB, 37495 (Decayed)

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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.
6 mins	2025-12-21 17:22:55.841Z	353.749° N	2025-12-21 17:25:55.841Z	78.988° E	38.645°	2025-12-21 17:28:55.841Z	145.536° SSE
6 mins	2025-12-22 07:16:55.841Z	189.704° SSW	2025-12-22 07:19:55.841Z	55.04° ENE	42.797°	2025-12-22 07:22:55.841Z	23.031° NE

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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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Check out COSMOS 2251 DEB, 35996 on other resources

View COSMOS 2251 DEB, 35996 on Heavens-Above

View COSMOS 2251 DEB, 35996 on Keep Track

View COSMOS 2251 DEB, 35996 on Celestrak

View COSMOS 2251 DEB, 35996 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

COSMOS 2251 DEB, 35996

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 days ago

TLE from 6 days ago

TLE epoch observation values (Epoch: 2025-12-15T22:25:06.327Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #36 in the year 1993 (1993-06-16 UTC)

COSMOS 2251 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out COSMOS 2251 DEB, 35996 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 days ago