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 (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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 21 hours ago

TLE from 21 hours ago

0 IRIDIUM 33 DEB
1 34521U 97051HN  26262.75476748  .00002591  00000-0  46428-3 0  9997
2 34521  86.3730 266.4486 0004915  56.2051 303.9630 14.66444324925871

Epoch: 2026-09-19T18:06Z

TLE epoch observation values (Epoch: 2026-09-19T18:06:51.910Z)

Latitude

-0.00002°

Longitude

-3.92645°

Altitude

673.603 km

Speed

7.521 km/s

True Right ascension

17h 45m 47s

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

07:42:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

672.826 km

Perigee altitude

665.898 km

Semi-major axis

7,047.499 km

Eccentricity

0.00049

Inclination

86.373°

RAAN

266.4486°

Arg. of periapsis

56.2051°

True anomaly

303.91627°

Mean anomaly

303.963°

Eccentric anomaly

303.93964°

Mean motion

3.66852 °/min

Orbital period

98.13 mins

BSTAR

0.00046428

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

IRIDIUM 33 DEB, 37135 (Decayed)

IRIDIUM 33 DEB, 39595 (Decayed)

IRIDIUM 33 DEB, 36643 (Decayed)

IRIDIUM 33 DEB, 36023 (Decayed)

IRIDIUM 33 DEB, 34533 (Decayed)

IRIDIUM 33 DEB, 35927 (Decayed)

IRIDIUM 33 DEB, 37558 (Decayed)

IRIDIUM 33 DEB, 33955 (Decayed)

IRIDIUM 33 DEB, 34703 (Decayed)

IRIDIUM 33 DEB, 38472 (Decayed)

IRIDIUM 33 DEB, 34489 (Decayed)

IRIDIUM 33 DEB, 34490 (Decayed)

IRIDIUM 33 DEB, 36494 (Decayed)

IRIDIUM 33 DEB, 36567 (Decayed)

IRIDIUM 33 DEB, 33964 (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.
5 mins	2026-09-20 23:44:19.312Z	113.191° SE	2026-09-20 23:46:19.312Z	85.695° E	16.274°	2026-09-20 23:49:19.312Z	44.109° NE
6 mins	2026-09-21 01:22:19.312Z	217.028° SW	2026-09-21 01:24:19.312Z	259.384° W	42.519°	2026-09-21 01:28:19.312Z	344.493° N
6 mins	2026-09-21 11:38:19.312Z	29.867° NE	2026-09-21 11:41:19.312Z	81.045° E	27.574°	2026-09-21 11:44:19.312Z	131.465° SE
6 mins	2026-09-21 13:17:19.312Z	318.423° NNW	2026-09-21 13:19:19.312Z	284.496° WNW	25.647°	2026-09-21 13:23:19.312Z	222.327° SW

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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: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-09-19T18:06:51.910Z)

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: 21 hours ago