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   26037.52455590  .00001545  00000-0  45174-3 0  9997
2 33773  86.3986  36.9328 0010295 341.0542  19.0275 14.43403124891527

Epoch: 2026-02-06T12:35Z

TLE epoch observation values (Epoch: 2026-02-06T12:35:21.629Z)

Latitude

0.00002°

Longitude

71.43149°

Altitude

743.405 km

Speed

7.487 km/s

True Right ascension

02h 27m 43s

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

04:55:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

751.561 km

Perigee altitude

736.896 km

Semi-major axis

7,122.365 km

Eccentricity

0.00103

Inclination

86.3986°

RAAN

36.9328°

Arg. of periapsis

341.0542°

True anomaly

19.06601°

Mean anomaly

19.0275°

Eccentric anomaly

19.04675°

Mean motion

3.61083 °/min

Orbital period

99.7 mins

BSTAR

0.00045174

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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, 34502 (Decayed)

IRIDIUM 33 DEB, 36495 (Decayed)

IRIDIUM 33 DEB, 38477

IRIDIUM 33 DEB, 34697 (Decayed)

IRIDIUM 33 DEB, 34598 (Decayed)

IRIDIUM 33 DEB, 35855 (Decayed)

IRIDIUM 33 DEB, 35293 (Decayed)

IRIDIUM 32, 24945 (Decayed)

IRIDIUM 33 DEB, 35915

IRIDIUM 33 DEB, 35918

IRIDIUM 33 DEB, 35929

IRIDIUM 33 DEB, 34091

IRIDIUM 33 DEB, 33870

IRIDIUM 33 DEB, 33862

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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.
6 mins	2026-02-07 10:48:17.297Z	36.488° NE	2026-02-07 10:51:17.297Z	74.854° E	17.193°	2026-02-07 10:54:17.297Z	114.247° SE
8 mins	2026-02-07 12:28:17.297Z	339.246° N	2026-02-07 12:31:17.297Z	289.023° WNW	35.839°	2026-02-07 12:36:17.297Z	200.963° SSW
7 mins	2026-02-07 23:40:17.297Z	133.518° SE	2026-02-07 23:43:17.297Z	73.956° E	28.641°	2026-02-07 23:47:17.297Z	21.836° NNE
6 mins	2026-02-08 01:20:17.297Z	239.304° WSW	2026-02-08 01:23:17.297Z	287.353° WNW	22.309°	2026-02-08 01:26:17.297Z	329.566° NNW

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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: 2026-02-06T12:35:21.629Z)

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