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: 1 week ago

TLE from 1 week ago

0 IRIDIUM 33 DEB
1 35631U 97051RD  26032.64974380  .00001686  00000-0  45297-3 0  9995
2 35631  86.3701 359.0487 0015498 318.6421 218.6745 14.47511715879332

Epoch: 2026-02-01T15:35Z

TLE epoch observation values (Epoch: 2026-02-01T15:35:37.864Z)

Latitude

2.6854°

Longitude

173.11502°

Altitude

745.162 km

Speed

7.478 km/s

True Right ascension

11h 55m 30s

True Declination

2° 40' 10"

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

01:29:11

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

741.751 km

Perigee altitude

719.716 km

Semi-major axis

7,108.87 km

Eccentricity

0.00155

Inclination

86.3701°

RAAN

359.0487°

Arg. of periapsis

318.6421°

True anomaly

218.56369°

Mean anomaly

218.6745°

Eccentric anomaly

218.61908°

Mean motion

3.62111 °/min

Orbital period

99.42 mins

BSTAR

0.00045297

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

IRIDIUM 33 DEB, 34929 (Decayed)

IRIDIUM 33 DEB, 35304 (Decayed)

IRIDIUM 33 DEB, 34536 (Decayed)

IRIDIUM 33 DEB, 34593 (Decayed)

IRIDIUM 33 DEB, 34931 (Decayed)

IRIDIUM 33 DEB, 35748 (Decayed)

IRIDIUM 33 DEB, 35922 (Decayed)

IRIDIUM 33 DEB, 34659 (Decayed)

IRIDIUM 33 DEB, 34538

IRIDIUM 33 DEB, 33887

IRIDIUM 33 DEB, 37550

IRIDIUM 33 DEB, 46734

IRIDIUM 33 DEB, 46979

IRIDIUM 33 DEB, 34492

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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.
4 mins	2026-02-11 07:38:31.236Z	46.066° ENE	2026-02-11 07:40:31.236Z	70.968° E	14.137°	2026-02-11 07:42:31.236Z	97.132° ESE
8 mins	2026-02-11 09:17:31.236Z	344.757° N	2026-02-11 09:20:31.236Z	296.146° NW	39.486°	2026-02-11 09:25:31.236Z	194.274° SSW
6 mins	2026-02-11 20:27:31.236Z	126.59° SE	2026-02-11 20:30:31.236Z	76.567° E	23.767°	2026-02-11 20:33:31.236Z	33.421° NE
7 mins	2026-02-11 22:06:31.236Z	224.881° SW	2026-02-11 22:09:31.236Z	271.644° WNW	26.969°	2026-02-11 22:13:31.236Z	336.494° 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, 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: 1 week ago

TLE from 1 week ago

TLE epoch observation values (Epoch: 2026-02-01T15:35:37.864Z)

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: 1 week ago