COSMOS 2251 DEB, 33821

Orbit data source: Space-Track

COSMOS 2251 DEB, 33821 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

33821, 1993-036BN

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, 0.2 m

Radar Cross Section

Small (<0.1 m²)

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Last TLE update: 5 hours ago

TLE from 5 hours ago

0 COSMOS 2251 DEB
1 33821U 93036BN  26124.19159738  .00031755  00000-0  89164-3 0  9998
2 33821  74.0266 199.2638 0039275 197.0562 162.9327 15.35611758771803

Epoch: 2026-05-04T04:35Z

TLE epoch observation values (Epoch: 2026-05-04T04:35:54.013Z)

Latitude

-0.00004°

Longitude

-91.7956°

Altitude

487.518 km

Speed

7.607 km/s

True Right ascension

13h 17m 03s

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

17:37:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

483.463 km

Perigee altitude

429.776 km

Semi-major axis

6,834.757 km

Eccentricity

0.00393

Inclination

74.0266°

RAAN

199.2638°

Arg. of periapsis

197.0562°

True anomaly

163.06417°

Mean anomaly

162.9327°

Eccentric anomaly

162.9985°

Mean motion

3.84113 °/min

Orbital period

93.72 mins

BSTAR

0.00089164

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

COSMOS 2251 DEB, 47055 (Decayed)

COSMOS 2251 DEB, 47067

COSMOS 2251 DEB, 33817 (Decayed)

COSMOS 2251 DEB, 34542 (Decayed)

COSMOS 2251 DEB, 33770 (Decayed)

COSMOS 2251 DEB, 35899 (Decayed)

COSMOS 2251 DEB, 37973

COSMOS 2251 DEB, 37996

COSMOS 2251 DEB, 36078 (Decayed)

COSMOS 2251 DEB, 34636 (Decayed)

COSMOS 2251 DEB, 34424 (Decayed)

COSMOS 2251 DEB, 36368 (Decayed)

COSMOS 2251 DEB, 34812 (Decayed)

COSMOS 2251 DEB, 34952 (Decayed)

COSMOS 2251 DEB, 34947 (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.
5 mins	2026-05-04 16:05:41.594Z	356.742° N	2026-05-04 16:08:41.594Z	88.174° E	35.093°	2026-05-04 16:10:41.594Z	137.564° SSE
5 mins	2026-05-05 05:45:41.594Z	162.37° S	2026-05-05 05:47:41.594Z	96.624° ESE	33.62°	2026-05-05 05:50:41.594Z	34.655° 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, 33821 on other resources

View COSMOS 2251 DEB, 33821 on Heavens-Above

View COSMOS 2251 DEB, 33821 on Keep Track

View COSMOS 2251 DEB, 33821 on Celestrak

View COSMOS 2251 DEB, 33821 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, 33821

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-05-04T04:35:54.013Z)

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, 33821 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 hours ago