IRIDIUM 33 DEB, 35631

Orbit data source: Space-Track

IRIDIUM 33 DEB, 35631 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/35631?theme=dark&initialShowStats=false

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Identifier

35631, 1997-051RD

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, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 IRIDIUM 33 DEB
1 35631U 97051RD  25355.30941309  .00001065  00000-0  28476-3 0  9991
2 35631  86.3669  17.2860 0019152  92.4338 283.2584 14.47332472873219

Epoch: 2025-12-21T07:25Z

TLE epoch observation values (Epoch: 2025-12-21T07:25:33.290Z)

Latitude

15.42212°

Longitude

176.77184°

Altitude

733.65 km

Speed

7.491 km/s

True Right ascension

01h 13m 08s

True Declination

15° 20' 02"

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

14:44:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

744.937 km

Perigee altitude

717.705 km

Semi-major axis

7,109.458 km

Eccentricity

0.00192

Inclination

86.3669°

RAAN

17.286°

Arg. of periapsis

92.4338°

True anomaly

283.04467°

Mean anomaly

283.2584°

Eccentric anomaly

283.15155°

Mean motion

3.62067 °/min

Orbital period

99.43 mins

BSTAR

0.00028476

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

IRIDIUM 33 DEB, 35081 (Decayed)

IRIDIUM 33 DEB, 36020 (Decayed)

IRIDIUM 33 DEB, 34707 (Decayed)

IRIDIUM 29, 24944

IRIDIUM 33 DEB, 38469 (Decayed)

IRIDIUM 33 DEB, 34538

IRIDIUM 33 DEB, 46734

IRIDIUM 33 DEB, 38471 (Decayed)

IRIDIUM 33 DEB, 46965

IRIDIUM 33 DEB, 34492

IRIDIUM 33 DEB, 37550

IRIDIUM 33 DEB, 33775

IRIDIUM 33 DEB, 37563 (Decayed)

IRIDIUM 33 DEB, 34146

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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	2025-12-22 01:43:42.488Z	154.354° SSE	2025-12-22 01:47:42.488Z	78.377° E	34.942°	2025-12-22 01:51:42.488Z	17.413° NNE
5 mins	2025-12-22 03:25:42.488Z	257.106° W	2025-12-22 03:27:42.488Z	286.528° WNW	17.125°	2025-12-22 03:30:42.488Z	325.165° NNW
8 mins	2025-12-22 13:48:42.488Z	356.107° N	2025-12-22 13:51:42.488Z	329.348° NNW	44.714°	2025-12-22 13:56:42.488Z	180.627° SSW

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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, 35631 on other resources

View IRIDIUM 33 DEB, 35631 on Heavens-Above

View IRIDIUM 33 DEB, 35631 on Keep Track

View IRIDIUM 33 DEB, 35631 on Celestrak

View IRIDIUM 33 DEB, 35631 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, 35631

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2025-12-21T07:25:33.290Z)

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, 35631 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago