IRIDIUM 33 DEB, 39783

Orbit data source: Space-Track

IRIDIUM 33 DEB, 39783 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

39783, 1997-051AAQ

Orbit

LEO

Country

Related business

Iridium Communications Inc. (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1997-09-14 (28 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: 4 weeks ago

TLE from 4 weeks ago

0 IRIDIUM 33 DEB
1 39783U 97051AAQ 25320.62894503  .00226179  00000-0  10398-1 0  9990
2 39783  86.1306 268.8004 0005753 179.9151   1.8316 15.19327111604018

Epoch: 2025-11-16T15:05Z

TLE epoch observation values (Epoch: 2025-11-16T15:05:40.850Z)

Latitude

-1.88078°

Longitude

166.56575°

Altitude

507.343 km

Speed

7.612 km/s

True Right ascension

05h 55m 42s

True Declination

-1° 52' 09"

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

09:15:26

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

508.684 km

Perigee altitude

500.764 km

Semi-major axis

6,882.861 km

Eccentricity

0.00058

Inclination

86.1306°

RAAN

268.8004°

Arg. of periapsis

179.9151°

True anomaly

1.83371°

Mean anomaly

1.8316°

Eccentric anomaly

1.83265°

Mean motion

3.80093 °/min

Orbital period

94.71 mins

BSTAR

0.010398

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

IRIDIUM 33 DEB, 35921 (Decayed)

IRIDIUM 33 DEB, 39595 (Decayed)

IRIDIUM 33 DEB, 36484 (Decayed)

IRIDIUM 33 DEB, 36389 (Decayed)

IRIDIUM 33 DEB, 35928 (Decayed)

IRIDIUM 33 DEB, 34363 (Decayed)

IRIDIUM 33 DEB, 40995 (Decayed)

IRIDIUM 33 DEB, 34379 (Decayed)

IRIDIUM 33 DEB, 33863 (Decayed)

IRIDIUM 33 DEB, 34901 (Decayed)

IRIDIUM 33 DEB, 34109 (Decayed)

IRIDIUM 33 DEB, 39790 (Decayed)

IRIDIUM 33 DEB, 34106 (Decayed)

IRIDIUM 33 DEB, 34361 (Decayed)

IRIDIUM 33 DEB, 40993 (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.
6 mins	2025-12-11 18:56:16.215Z	187.975° SSW	2025-12-11 18:59:16.215Z	261.066° W	43.842°	2025-12-11 19:02:16.215Z	358.047° N
5 mins	2025-12-12 06:21:16.215Z	359.028° N	2025-12-12 06:23:16.215Z	20.026° NNE	44.569°	2025-12-12 06:26:16.215Z	176.682° S

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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, 39783 on other resources

View IRIDIUM 33 DEB, 39783 on Heavens-Above

View IRIDIUM 33 DEB, 39783 on Keep Track

View IRIDIUM 33 DEB, 39783 on Celestrak

View IRIDIUM 33 DEB, 39783 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, 39783

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 4 weeks ago

TLE from 4 weeks ago

TLE epoch observation values (Epoch: 2025-11-16T15:05:40.850Z)

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, 39783 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 4 weeks ago