IRIDIUM 33 DEB, 33853

Orbit data source: Space-Track

IRIDIUM 33 DEB, 33853 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/33853?theme=dark&initialShowStats=false

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Identifier

33853, 1997-051W

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)

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

TLE from 17 hours ago

0 IRIDIUM 33 DEB
1 33853U 97051W   25348.51095634  .00003527  00000-0  20195-2 0  9995
2 33853  85.9995 349.0348 0206998 230.3282 261.3777 13.99075602853702

Epoch: 2025-12-14T12:15Z

TLE epoch observation values (Epoch: 2025-12-14T12:15:46.627Z)

Latitude

50.55617°

Longitude

-103.18328°

Altitude

930.765 km

Speed

7.378 km/s

True Right ascension

10h 56m 44s

True Declination

50° 23' 29"

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

04:14:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,044.551 km

Perigee altitude

743.487 km

Semi-major axis

7,272.156 km

Eccentricity

0.0207

Inclination

85.9995°

RAAN

349.0348°

Arg. of periapsis

230.3282°

True anomaly

259.0422°

Mean anomaly

261.3777°

Eccentric anomaly

260.20896°

Mean motion

3.49984 °/min

Orbital period

102.86 mins

BSTAR

0.0020195

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

IRIDIUM 33 DEB, 36642 (Decayed)

IRIDIUM 33 DEB, 35732 (Decayed)

IRIDIUM 33 DEB, 34379 (Decayed)

IRIDIUM 33 DEB, 33965 (Decayed)

IRIDIUM 30, 24949 (Decayed)

IRIDIUM 33 DEB, 38470 (Decayed)

IRIDIUM 33 DEB, 34075 (Decayed)

IRIDIUM 33 DEB, 35483 (Decayed)

IRIDIUM 28, 24948

IRIDIUM 33 DEB, 34652

IRIDIUM 33 DEB, 38241

IRIDIUM 33 DEB, 34159

IRIDIUM 33 DEB, 36012

IRIDIUM 33 DEB, 38028

IRIDIUM 33 DEB, 34651

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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	2025-12-15 12:16:30.986Z	359.09° N	2025-12-15 12:20:30.986Z	52.892° ENE	44.842°	2025-12-15 12:25:30.986Z	176.119° S
9 mins	2025-12-15 23:48:30.986Z	133.676° SE	2025-12-15 23:52:30.986Z	80.161° E	29.087°	2025-12-15 23:57:30.986Z	24.441° NE
11 mins	2025-12-16 01:30:30.986Z	217.087° SW	2025-12-16 01:35:30.986Z	280.305° WNW	32.228°	2025-12-16 01:41:30.986Z	347.373° 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, 33853 on other resources

View IRIDIUM 33 DEB, 33853 on Heavens-Above

View IRIDIUM 33 DEB, 33853 on Keep Track

View IRIDIUM 33 DEB, 33853 on Celestrak

View IRIDIUM 33 DEB, 33853 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, 33853

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: 2025-12-14T12:15:46.627Z)

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, 33853 on other resources

Documentation

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