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 (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: 1 week ago

TLE from 1 week ago

0 IRIDIUM 33 DEB
1 39781U 97051AAN 26032.33613083  .00009026  00000-0  35030-2 0  9990
2 39781  86.3718 237.1194 0171294 110.1022  68.5667 14.22082273 88253

Epoch: 2026-02-01T08:04Z

TLE epoch observation values (Epoch: 2026-02-01T08:04:01.703Z)

Latitude

-0.632°

Longitude

164.60493°

Altitude

778.23 km

Speed

7.487 km/s

True Right ascension

03h 48m 38s

True Declination

0° 37' 42"

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

00:52:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

938.519 km

Perigee altitude

692.081 km

Semi-major axis

7,193.437 km

Eccentricity

0.01713

Inclination

86.3718°

RAAN

237.1194°

Arg. of periapsis

110.1022°

True anomaly

70.40793°

Mean anomaly

68.5667°

Eccentric anomaly

69.48591°

Mean motion

3.55745 °/min

Orbital period

101.2 mins

BSTAR

0.003503

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

IRIDIUM 33 DEB, 35735 (Decayed)

IRIDIUM 33 DEB, 36029 (Decayed)

IRIDIUM 33 DEB, 34697 (Decayed)

IRIDIUM 33 DEB, 39796 (Decayed)

IRIDIUM 33 DEB, 46961 (Decayed)

IRIDIUM 33 DEB, 34768 (Decayed)

IRIDIUM 33 DEB, 40997 (Decayed)

IRIDIUM 33 DEB, 34534 (Decayed)

IRIDIUM 33 DEB, 34102 (Decayed)

IRIDIUM 33 DEB, 46969 (Decayed)

IRIDIUM 33 DEB, 35844 (Decayed)

IRIDIUM 33 DEB, 35305 (Decayed)

IRIDIUM 33 DEB, 36566 (Decayed)

IRIDIUM 33 DEB, 34699 (Decayed)

IRIDIUM 33 DEB, 34087 (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.
7 mins	2026-02-08 00:14:05.673Z	26.942° NE	2026-02-08 00:18:05.673Z	86.988° E	23.113°	2026-02-08 00:21:05.673Z	129.477° SE
7 mins	2026-02-08 01:56:05.673Z	328.048° NNW	2026-02-08 01:59:05.673Z	279.35° WNW	27.013°	2026-02-08 02:03:05.673Z	218.197° SW
7 mins	2026-02-08 13:18:05.673Z	166.601° S	2026-02-08 13:21:05.673Z	99.703° ESE	42.454°	2026-02-08 13:25:05.673Z	10.271° 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: 1 week ago

TLE from 1 week ago

TLE epoch observation values (Epoch: 2026-02-01T08:04:01.703Z)

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 week ago