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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https://www.satcat.com/sats-embedded/39781?theme=dark&initialShowStats=false

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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: 1 day ago

TLE from 1 day ago

0 IRIDIUM 33 DEB
1 39781U 97051AAN 26127.95206323  .00008476  00000-0  31004-2 0  9993
2 39781  86.3754 197.6051 0178032 163.7669  14.5925 14.24383475101853

Epoch: 2026-05-07T22:50Z

TLE epoch observation values (Epoch: 2026-05-07T22:50:58.263Z)

Latitude

0.99957°

Longitude

169.00853°

Altitude

689.748 km

Speed

7.576 km/s

True Right ascension

01h 10m 10s

True Declination

0° 59' 37"

Sunlit

Object was in daylight 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

06:44:25

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

935.472 km

Perigee altitude

679.616 km

Semi-major axis

7,185.681 km

Eccentricity

0.0178

Inclination

86.3754°

RAAN

197.6051°

Arg. of periapsis

163.7669°

True anomaly

15.11778°

Mean anomaly

14.5925°

Eccentric anomaly

14.854°

Mean motion

3.56321 °/min

Orbital period

101.03 mins

BSTAR

0.0031004

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

IRIDIUM 33 DEB, 34490 (Decayed)

IRIDIUM 33 DEB, 40992 (Decayed)

IRIDIUM 33 DEB, 35927 (Decayed)

IRIDIUM 33 DEB, 34695 (Decayed)

IRIDIUM 33 DEB, 46968 (Decayed)

IRIDIUM 33 DEB, 35917 (Decayed)

IRIDIUM 33 DEB, 33872 (Decayed)

IRIDIUM 33 DEB, 34379 (Decayed)

IRIDIUM 33 DEB, 34161 (Decayed)

IRIDIUM 33 DEB, 40997 (Decayed)

IRIDIUM 33 DEB, 34901 (Decayed)

IRIDIUM 33 DEB, 34600 (Decayed)

IRIDIUM 33 DEB, 38234 (Decayed)

IRIDIUM 33 DEB, 34866 (Decayed)

IRIDIUM 33 DEB, 33878 (Decayed)

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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.
9 mins	2026-05-09 04:28:49.498Z	150.465° SSE	2026-05-09 04:33:49.498Z	77.183° E	32.697°	2026-05-09 04:37:49.498Z	21.893° NNE
7 mins	2026-05-09 06:11:49.498Z	237.746° WSW	2026-05-09 06:14:49.498Z	278.492° WNW	23.495°	2026-05-09 06:18:49.498Z	331.401° NNW
8 mins	2026-05-09 16:45:49.498Z	355.279° N	2026-05-09 16:49:49.498Z	199.514° SSW	43.39°	2026-05-09 16:53:49.498Z	181.743° SSW

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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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-05-07T22:50:58.263Z)

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: 1 day ago