IRIDIUM 33 DEB, 39778

Orbit data source: Space-Track

IRIDIUM 33 DEB, 39778 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/39778?theme=dark&initialShowStats=false

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Identifier

39778, 1997-051AAK

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)

Expand to show TLE details & history
Last TLE update: 17 hours ago

TLE from 17 hours ago

0 IRIDIUM 33 DEB
1 39778U 97051AAK 26088.18398138  .00004875  00000-0  11207-2 0  9998
2 39778  86.3826 356.9914 0009190  38.6134 321.5729 14.55265904622404

Epoch: 2026-03-29T04:24Z

TLE epoch observation values (Epoch: 2026-03-29T04:24:55.991Z)

Latitude

-0.00001°

Longitude

104.16458°

Altitude

706.481 km

Speed

7.505 km/s

True Right ascension

23h 47m 57s

True Declination

0° 00' 00"

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

02:34:11

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

711.946 km

Perigee altitude

698.927 km

Semi-major axis

7,083.573 km

Eccentricity

0.00092

Inclination

86.3826°

RAAN

356.9914°

Arg. of periapsis

38.6134°

True anomaly

321.50739°

Mean anomaly

321.5729°

Eccentric anomaly

321.54015°

Mean motion

3.64053 °/min

Orbital period

98.89 mins

BSTAR

0.0011207

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

IRIDIUM 33 DEB, 39787 (Decayed)

IRIDIUM 33 DEB, 34161 (Decayed)

IRIDIUM 33 DEB, 39785 (Decayed)

IRIDIUM 33 DEB, 35738 (Decayed)

IRIDIUM 33 DEB, 36566 (Decayed)

IRIDIUM 33 DEB, 37134 (Decayed)

IRIDIUM 33 DEB, 36498 (Decayed)

IRIDIUM 33 DEB, 34497

IRIDIUM 33 DEB, 34648

IRIDIUM 33 DEB, 35484

IRIDIUM 33 DEB, 46974

IRIDIUM 33 DEB, 35051

IRIDIUM 33 DEB, 33866

IRIDIUM 33 DEB, 35797

IRIDIUM 33 DEB, 35744

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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.
8 mins	2026-03-30 05:44:33.221Z	6.463° NNE	2026-03-30 05:48:33.221Z	87.438° E	41.587°	2026-03-30 05:52:33.221Z	165.218° S
9 mins	2026-03-30 18:28:33.221Z	187.38° SSW	2026-03-30 18:33:33.221Z	310.337° NW	43.401°	2026-03-30 18:37:33.221Z	358.271° N

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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, 39778 on other resources

View IRIDIUM 33 DEB, 39778 on Heavens-Above

View IRIDIUM 33 DEB, 39778 on Keep Track

View IRIDIUM 33 DEB, 39778 on Celestrak

View IRIDIUM 33 DEB, 39778 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, 39778

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2026-03-29T04:24:55.991Z)

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, 39778 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 17 hours ago