IRIDIUM 33 DEB, 33773

Orbit data source: Space-Track

IRIDIUM 33 DEB, 33773 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

33773, 1997-051L

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, 0.8 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 14 hours ago

TLE from 14 hours ago

0 IRIDIUM 33 DEB
1 33773U 97051L   25351.70687539  .00000841  00000-0  24372-3 0  9990
2 33773  86.4007  58.4847 0012911 131.8880 228.3425 14.43267660884194

Epoch: 2025-12-17T16:57Z

TLE epoch observation values (Epoch: 2025-12-17T16:57:54.033Z)

Latitude

0.00001°

Longitude

77.43669°

Altitude

756.909 km

Speed

7.473 km/s

True Right ascension

03h 53m 56s

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

05:19:12

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

753.87 km

Perigee altitude

735.478 km

Semi-major axis

7,122.811 km

Eccentricity

0.00129

Inclination

86.4007°

RAAN

58.4847°

Arg. of periapsis

131.888°

True anomaly

228.23208°

Mean anomaly

228.3425°

Eccentric anomaly

228.28728°

Mean motion

3.61049 °/min

Orbital period

99.71 mins

BSTAR

0.00024372

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

IRIDIUM 33 DEB, 46978 (Decayed)

IRIDIUM 33 DEB, 35478 (Decayed)

IRIDIUM 33 DEB, 36641 (Decayed)

IRIDIUM 33 DEB, 35921 (Decayed)

IRIDIUM 33 DEB, 34656 (Decayed)

IRIDIUM 33 DEB, 36564 (Decayed)

IRIDIUM 33 DEB, 35293 (Decayed)

IRIDIUM 33 DEB, 35081 (Decayed)

IRIDIUM 33 DEB, 35910 (Decayed)

IRIDIUM 33 DEB, 36489 (Decayed)

IRIDIUM 33 DEB, 38029 (Decayed)

IRIDIUM 33 DEB, 33778 (Decayed)

IRIDIUM 33 DEB, 44995 (Decayed)

IRIDIUM 33 DEB, 35850

IRIDIUM 33 DEB, 36483

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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	2025-12-18 16:51:09.704Z	354.777° N	2025-12-18 16:54:09.704Z	314.811° NW	44.537°	2025-12-18 16:59:09.704Z	182.076° SSW
5 mins	2025-12-19 04:04:09.704Z	105.818° ESE	2025-12-19 04:06:09.704Z	74.726° E	18.87°	2025-12-19 04:09:09.704Z	36.754° NE
8 mins	2025-12-19 05:42:09.704Z	214.47° SW	2025-12-19 05:45:09.704Z	265.556° W	33.016°	2025-12-19 05:50:09.704Z	347.23° 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, 33773 on other resources

View IRIDIUM 33 DEB, 33773 on Heavens-Above

View IRIDIUM 33 DEB, 33773 on Keep Track

View IRIDIUM 33 DEB, 33773 on Celestrak

View IRIDIUM 33 DEB, 33773 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, 33773

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2025-12-17T16:57:54.033Z)

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, 33773 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago