IRIDIUM 33 DEB, 39778

Orbit data source: Space-Track

IRIDIUM 33 DEB, 39778 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
39778, 1997-051AAK
Orbit
LEO
Last TLE update
4 days ago
Origin
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
Radar Cross Section
Small (<0.1 m²)

Expand to show TLE details & history

TLE from 4 days ago
0 IRIDIUM 33 DEB
1 39778U 97051AAK 25106.36395520  .00007070  00000-0  17426-2 0  9999
2 39778  86.3804 147.3594 0011016 108.4112 251.8292 14.52038566599264
Epoch: 2025-04-16T08:44Z
Definitive object data (Epoch: 2025-04-16T08:44:05.729Z)
Latitude
-0.00005°
Longitude
171.58425°
Altitude
724.521 km
Speed
7.492 km/s
True Right ascension
09h 49m 26s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at TLE epoch
Visualization TLE readout
Latitude
15.83447°
Longitude
-11.03009°
Altitude
718.298 km
Speed
7.499 km/s
Apparent Right ascension
20h 58m 26s
Apparent Declination
-10° 35' 42"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
08:01:37
Azimuth
332.861° NNW
Elevation
-58.087°
Doppler factor
1
Orbital elements
Apogee altitude
723.753 km
Perigee altitude
708.123 km
Semi-major axis
7,094.075 km
Eccentricity
0.0011016
Inclination
86.3804°
RAAN
147.3594°
Arg. of periapsis
108.4112°
True anomaly
251.70931°
Mean anomaly
251.8292°
Eccentric anomaly
251.76925°
Mean motion
3.63245 °/min
BSTAR
0.0017426
Orbital period
99.11 mins
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IRIDIUM 33 DEB Visibility forecast

Observer location: undefined°, undefined°

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.
7 mins2025-04-20 02:10:34.614Z135.469° SSE2025-04-20 02:13:34.614Z88.052° E25.614°2025-04-20 02:17:34.614Z27.497° NE
6 mins2025-04-20 03:50:34.614Z235.684° WSW2025-04-20 03:53:34.614Z288.601° WNW24.08°2025-04-20 03:56:34.614Z332.567° NNW
7 mins2025-04-20 14:12:34.614Z12.22° NNE2025-04-20 14:15:34.614Z76.866° E39.967°2025-04-20 14:19:34.614Z161.43° S
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