COSMOS 2251 DEB, 35660

Orbit data source: Space-Track

COSMOS 2251 DEB, 35660 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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Identifier

35660, 1993-036APB

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)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 COSMOS 2251 DEB
1 35660U 93036APB 26121.57735715  .00001245  00000-0  32523-3 0  9993
2 35660  74.0400 230.6230 0017992 341.8872  37.6330 14.50408767678986

Epoch: 2026-05-01T13:51Z

TLE epoch observation values (Epoch: 2026-05-01T13:51:23.657Z)

Latitude

18.86315°

Longitude

168.84399°

Altitude

716.324 km

Speed

7.504 km/s

True Right ascension

15h 44m 48s

True Declination

18° 45' 27"

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

23:34:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

734.696 km

Perigee altitude

709.147 km

Semi-major axis

7,100.058 km

Eccentricity

0.0018

Inclination

74.04°

RAAN

230.623°

Arg. of periapsis

341.8872°

True anomaly

37.75911°

Mean anomaly

37.633°

Eccentric anomaly

37.69603°

Mean motion

3.62786 °/min

Orbital period

99.23 mins

BSTAR

0.00032523

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

COSMOS 2251 DEB, 36527 (Decayed)

COSMOS 2251 DEB, 36525 (Decayed)

COSMOS 2251 DEB, 34912 (Decayed)

COSMOS 2251 DEB, 35770 (Decayed)

COSMOS 2251 DEB, 33902 (Decayed)

COSMOS 2251 DEB, 36445 (Decayed)

COSMOS 2251 DEB, 35592 (Decayed)

COSMOS 2251 DEB, 34290 (Decayed)

COSMOS 2251 DEB, 34442 (Decayed)

COSMOS 2251 DEB, 36463 (Decayed)

SL-8 DEB, 23007

COSMOS 2251 DEB, 35727 (Decayed)

COSMOS 2251 DEB, 34794 (Decayed)

COSMOS 2251 DEB, 34275 (Decayed)

COSMOS 2251 DEB, 36041 (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.
9 mins	2026-05-03 17:37:38.160Z	357.756° N	2026-05-03 17:42:38.160Z	74.793° E	30.304°	2026-05-03 17:46:38.160Z	130.232° SE
6 mins	2026-05-03 19:20:38.160Z	300.944° NW	2026-05-03 19:23:38.160Z	252.257° W	22.195°	2026-05-03 19:26:38.160Z	212.241° SW
8 mins	2026-05-04 08:06:38.160Z	199.268° SSW	2026-05-04 08:10:38.160Z	352.094° N	44.748°	2026-05-04 08:14:38.160Z	17.867° NNE

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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, 35660 on other resources

View COSMOS 2251 DEB, 35660 on Heavens-Above

View COSMOS 2251 DEB, 35660 on Keep Track

View COSMOS 2251 DEB, 35660 on Celestrak

View COSMOS 2251 DEB, 35660 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, 35660

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-05-01T13:51:23.657Z)

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, 35660 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago