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 (29 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.8 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 21 hours ago

TLE from 21 hours ago

0 IRIDIUM 33 DEB
1 33773U 97051L   26267.02533108  .00000522  00000-0  14753-3 0  9992
2 33773  86.3980 299.6715 0008918 293.4640  66.5624 14.43770321924637

Epoch: 2026-09-24T00:36Z

TLE epoch observation values (Epoch: 2026-09-24T00:36:28.605Z)

Latitude

0.00006°

Longitude

-72.31571°

Altitude

746.61 km

Speed

7.483 km/s

True Right ascension

19h 58m 41s

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

15:05:29

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

749.37 km

Perigee altitude

736.669 km

Semi-major axis

7,121.156 km

Eccentricity

0.00089

Inclination

86.398°

RAAN

299.6715°

Arg. of periapsis

293.464°

True anomaly

66.6562°

Mean anomaly

66.5624°

Eccentric anomaly

66.6093°

Mean motion

3.61175 °/min

Orbital period

99.67 mins

BSTAR

0.00014753

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

IRIDIUM 33 DEB, 34895 (Decayed)

IRIDIUM 33 DEB, 33957 (Decayed)

IRIDIUM 33 DEB, 35734 (Decayed)

IRIDIUM 33 DEB, 35300 (Decayed)

IRIDIUM 33 DEB, 46436 (Decayed)

IRIDIUM 33 DEB, 38232 (Decayed)

IRIDIUM 33 DEB, 34776 (Decayed)

IRIDIUM 33 DEB, 39790 (Decayed)

IRIDIUM 33 DEB, 33962 (Decayed)

IRIDIUM 33 DEB, 38242 (Decayed)

IRIDIUM 33 DEB, 34504 (Decayed)

IRIDIUM 33 DEB, 34089 (Decayed)

IRIDIUM 33 DEB, 38030 (Decayed)

IRIDIUM 33 DEB, 34649 (Decayed)

IRIDIUM 33 DEB, 46981 (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.
6 mins	2026-09-25 01:41:59.783Z	118.136° SE	2026-09-25 01:44:59.783Z	77.405° E	19.041°	2026-09-25 01:47:59.783Z	39.141° NE
8 mins	2026-09-25 03:20:59.783Z	211.207° SW	2026-09-25 03:23:59.783Z	260.549° W	42.94°	2026-09-25 03:28:59.783Z	347.88° N
7 mins	2026-09-25 13:47:59.783Z	26.031° NE	2026-09-25 13:50:59.783Z	87.892° E	39.423°	2026-09-25 13:54:59.783Z	148.972° SSE
6 mins	2026-09-25 15:27:59.783Z	315.858° NNW	2026-09-25 15:30:59.783Z	271.433° WNW	21.104°	2026-09-25 15:33:59.783Z	233.207° WSW

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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: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-09-24T00:36:28.605Z)

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: 21 hours ago