IRIDIUM 33 DEB, 40998

Orbit data source: Space-Track

IRIDIUM 33 DEB, 40998 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

40998, 1997-051ABL

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, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 IRIDIUM 33 DEB
1 40998U 97051ABL 26119.42494392  .00001364  00000-0  38048-3 0  9998
2 40998  86.3857 354.8326 0007674   0.9383 120.3819 14.45628473 86706

Epoch: 2026-04-29T10:11Z

TLE epoch observation values (Epoch: 2026-04-29T10:11:55.154Z)

Latitude

58.51431°

Longitude

158.57875°

Altitude

752.706 km

Speed

7.482 km/s

True Right ascension

11h 15m 46s

True Declination

58° 21' 39"

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

01:15:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

742.371 km

Perigee altitude

731.451 km

Semi-major axis

7,115.048 km

Eccentricity

0.00077

Inclination

86.3857°

RAAN

354.8326°

Arg. of periapsis

0.9383°

True anomaly

120.45772°

Mean anomaly

120.3819°

Eccentric anomaly

120.41982°

Mean motion

3.6164 °/min

Orbital period

99.55 mins

BSTAR

0.00038048

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

IRIDIUM 33 DEB, 35486 (Decayed)

IRIDIUM 33 DEB, 34691 (Decayed)

IRIDIUM 33 DEB, 38234 (Decayed)

IRIDIUM 29, 24944

IRIDIUM 33 DEB, 46979

IRIDIUM 33 DEB, 46965

IRIDIUM 33 DEB, 46734

IRIDIUM 33 DEB, 34492

IRIDIUM 33 DEB, 37550

IRIDIUM 33 DEB, 35631

IRIDIUM 33 DEB, 33775

IRIDIUM 33 DEB, 36497

IRIDIUM 33 DEB, 34538

IRIDIUM 33 DEB, 35846

IRIDIUM 33 DEB, 35298 (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.
8 mins	2026-05-02 03:00:27.628Z	19.79° NNE	2026-05-02 03:04:27.628Z	89.608° E	30.861°	2026-05-02 03:08:27.628Z	147.574° SSE
6 mins	2026-05-02 04:41:27.628Z	314.654° NW	2026-05-02 04:43:27.628Z	285.088° WNW	20.612°	2026-05-02 04:47:27.628Z	230.024° WSW
8 mins	2026-05-02 15:50:27.628Z	171.298° S	2026-05-02 15:54:27.628Z	53.009° ENE	42.802°	2026-05-02 15:58:27.628Z	7.538° NNE

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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, 40998 on other resources

View IRIDIUM 33 DEB, 40998 on Heavens-Above

View IRIDIUM 33 DEB, 40998 on Keep Track

View IRIDIUM 33 DEB, 40998 on Celestrak

View IRIDIUM 33 DEB, 40998 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, 40998

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-04-29T10:11:55.154Z)

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, 40998 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago