IRIDIUM 33 DEB, 33776

Orbit data source: Space-Track

IRIDIUM 33 DEB, 33776 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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https://www.satcat.com/sats-embedded/33776?theme=dark&initialShowStats=false

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Identifier

33776, 1997-051P

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, 0.6 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 IRIDIUM 33 DEB
1 33776U 97051P   25351.75781194  .00000700  00000-0  22372-3 0  9992
2 33776  86.4037  78.6687 0014952 174.0030 313.2973 14.38243892881542

Epoch: 2025-12-17T18:11Z

TLE epoch observation values (Epoch: 2025-12-17T18:11:14.951Z)

Latitude

52.7753°

Longitude

-105.48667°

Altitude

765.68 km

Speed

7.48 km/s

True Right ascension

16h 55m 47s

True Declination

52° 36' 35"

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

05:17:56

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

771.94 km

Perigee altitude

750.59 km

Semi-major axis

7,139.402 km

Eccentricity

0.0015

Inclination

86.4037°

RAAN

78.6687°

Arg. of periapsis

174.003°

True anomaly

313.17244°

Mean anomaly

313.2973°

Eccentric anomaly

313.23489°

Mean motion

3.59791 °/min

Orbital period

100.06 mins

BSTAR

0.00022372

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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.
9 mins	2025-12-18 07:03:54.099Z	204.815° SW	2025-12-18 07:08:54.099Z	287.111° WNW	35.017°	2025-12-18 07:12:54.099Z	346.843° N
8 mins	2025-12-18 17:33:54.099Z	20.112° NNE	2025-12-18 17:36:54.099Z	71.407° E	33.247°	2025-12-18 17:41:54.099Z	152.904° SSE
6 mins	2025-12-18 19:14:54.099Z	314.069° NW	2025-12-18 19:16:54.099Z	286.502° WNW	18.837°	2025-12-18 19:20:54.099Z	233.77° 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, 33776 on other resources

View IRIDIUM 33 DEB, 33776 on Heavens-Above

View IRIDIUM 33 DEB, 33776 on Keep Track

View IRIDIUM 33 DEB, 33776 on Celestrak

View IRIDIUM 33 DEB, 33776 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, 33776

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2025-12-17T18:11:14.951Z)

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, 33776 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago