IRIDIUM 33 DEB, 39781

Orbit data source: Space-Track

IRIDIUM 33 DEB, 39781 is space debris in LEO originally from a launch on Sun, 14 Sep 1997 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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

39781, 1997-051AAN

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1997-09-14 (29 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

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 IRIDIUM 33 DEB
1 39781U 97051AAN 26084.62986015  .00010760  00000-0  41065-2 0  9999
2 39781  86.3742 215.5276 0167081 301.4320  68.8545 14.23293704 95694

Epoch: 2026-03-25T15:06Z

TLE epoch observation values (Epoch: 2026-03-25T15:06:59.916Z)

Latitude

12.01646°

Longitude

166.45625°

Altitude

774.915 km

Speed

7.489 km/s

True Right ascension

14h 25m 11s

True Declination

11° 56' 48"

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

16:32:48

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

931.335 km

Perigee altitude

691.094 km

Semi-major axis

7,189.351 km

Eccentricity

0.01671

Inclination

86.3742°

RAAN

215.5276°

Arg. of periapsis

301.432°

True anomaly

70.65345°

Mean anomaly

68.8545°

Eccentric anomaly

69.75265°

Mean motion

3.56048 °/min

Orbital period

101.11 mins

BSTAR

0.0041065

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Other satellites on launch #51 in the year 1997 (1997-09-14 UTC)

IRIDIUM 33 DEB, 36566 (Decayed)

IRIDIUM 33 DEB, 39787 (Decayed)

IRIDIUM 33 DEB, 34514 (Decayed)

IRIDIUM 33 DEB, 38030 (Decayed)

IRIDIUM 33 DEB, 34775 (Decayed)

IRIDIUM 33 DEB, 34483 (Decayed)

IRIDIUM 33 DEB, 33861 (Decayed)

IRIDIUM 33 DEB, 34080 (Decayed)

IRIDIUM 33 DEB, 34092 (Decayed)

IRIDIUM 33, 24946

IRIDIUM 33 DEB, 33860

IRIDIUM 33 DEB, 37565

IRIDIUM 33 DEB, 33953

IRIDIUM 33 DEB, 34896

IRIDIUM 33 DEB, 46435

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IRIDIUM 33 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.
10 mins	2026-03-27 19:56:40.534Z	15.221° NNE	2026-03-27 20:01:40.534Z	78.682° E	31.938°	2026-03-27 20:06:40.534Z	146.285° SSE
8 mins	2026-03-27 21:39:40.534Z	324.511° NNW	2026-03-27 21:42:40.534Z	284.755° WNW	25.944°	2026-03-27 21:47:40.534Z	222.207° SW
10 mins	2026-03-28 08:58:40.534Z	177.57° S	2026-03-28 09:02:40.534Z	147.559° SSE	44.402°	2026-03-28 09:08:40.534Z	4.089° 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 IRIDIUM 33 DEB, 39781 on other resources

View IRIDIUM 33 DEB, 39781 on Heavens-Above

View IRIDIUM 33 DEB, 39781 on Keep Track

View IRIDIUM 33 DEB, 39781 on Celestrak

View IRIDIUM 33 DEB, 39781 on Gunter's Space Page

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

IRIDIUM 33 DEB, 39781

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: 2026-03-25T15:06:59.916Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #51 in the year 1997 (1997-09-14 UTC)

IRIDIUM 33 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out IRIDIUM 33 DEB, 39781 on other resources

Documentation

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