IRIDIUM 33 DEB, 34521

Orbit data source: Space-Track

IRIDIUM 33 DEB, 34521 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

34521, 1997-051HN

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: 16 hours ago

TLE from 16 hours ago

0 IRIDIUM 33 DEB
1 34521U 97051HN  25350.81738739  .00003324  00000-0  63887-3 0  9995
2 34521  86.3799  28.7533 0002045 194.2970 165.8185 14.63402496885329

Epoch: 2025-12-16T19:37Z

TLE epoch observation values (Epoch: 2025-12-16T19:37:02.270Z)

Latitude

0.00003°

Longitude

8.79769°

Altitude

686.701 km

Speed

7.512 km/s

True Right ascension

01h 55m 00s

True Declination

0° 00' 00"

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

10:16:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

680.576 km

Perigee altitude

677.689 km

Semi-major axis

7,057.27 km

Eccentricity

0.0002

Inclination

86.3799°

RAAN

28.7533°

Arg. of periapsis

194.297°

True anomaly

165.82424°

Mean anomaly

165.8185°

Eccentric anomaly

165.82137°

Mean motion

3.6609 °/min

Orbital period

98.34 mins

BSTAR

0.00063887

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

IRIDIUM 33 DEB, 35907

IRIDIUM 33 DEB, 34507 (Decayed)

IRIDIUM 33 DEB, 35930 (Decayed)

IRIDIUM 33 DEB, 36022 (Decayed)

IRIDIUM 33 DEB, 35921 (Decayed)

IRIDIUM 33 DEB, 34900 (Decayed)

IRIDIUM 33 DEB, 34828 (Decayed)

IRIDIUM 33 DEB, 34108 (Decayed)

IRIDIUM 33 DEB, 38226 (Decayed)

IRIDIUM 33 DEB, 34158 (Decayed)

IRIDIUM 33 DEB, 37551 (Decayed)

IRIDIUM 33 DEB, 38031 (Decayed)

IRIDIUM 33 DEB, 36082 (Decayed)

IRIDIUM 33 DEB, 35477 (Decayed)

IRIDIUM 33 DEB, 34649 (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	2025-12-17 14:14:57.030Z	22.262° NNE	2025-12-17 14:17:57.030Z	73.697° E	29.794°	2025-12-17 14:21:57.030Z	145.018° SSE
5 mins	2025-12-17 15:54:57.030Z	306.899° NW	2025-12-17 15:56:57.030Z	273.547° WNW	19.261°	2025-12-17 15:59:57.030Z	232.313° WSW
7 mins	2025-12-18 02:55:57.030Z	159.459° S	2025-12-18 02:58:57.030Z	78.492° E	39.781°	2025-12-18 03:02:57.030Z	12.291° 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, 34521 on other resources

View IRIDIUM 33 DEB, 34521 on Heavens-Above

View IRIDIUM 33 DEB, 34521 on Keep Track

View IRIDIUM 33 DEB, 34521 on Celestrak

View IRIDIUM 33 DEB, 34521 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, 34521

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-12-16T19:37:02.270Z)

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, 34521 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago