ATLAS 5 CENTAUR DEB, 55857
Orbit data source: Space-Track
ATLAS 5 CENTAUR DEB, 55857 is space debris in HEO originally from a launch on Wed, 17 Oct 2018 UTC launched from the Air Force Eastern Test Range (AFETR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
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55857 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
ULA Decatur
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 ATLAS 5 CENTAUR DEB
1 55857U 18079HK 26304.82698622 -.00000151 00000-0 00000-0 0 9991
2 55857 13.7935 335.4561 4478515 74.3351 329.5548 2.00103901 29456Epoch: 2026-10-31T19:50Z
TLE epoch observation values (Epoch: 2026-10-31T19:50:51.609Z)
Latitude
0.00001°
Longitude
-2.42632°
Altitude
12,570.228 km
Speed
5.205 km/s
True Right ascension
22h 21m 39s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
09:13:59
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
32,139.268 km
Perigee altitude
8,310.75 km
Semi-major axis
26,603.146 km
Eccentricity
0.44785
Inclination
13.7935°
RAAN
335.4561°
Arg. of periapsis
74.3351°
True anomaly
285.70738°
Mean anomaly
329.5548°
Eccentric anomaly
309.85699°
Mean motion
0.5002 °/min
Orbital period
719.71 mins
BSTAR
0
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Other satellites on launch #79 in the year 2018 (2018-10-17 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.ATLAS 5 CENTAUR 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. |
|---|---|---|---|---|---|---|---|
| 123 mins | 2026-11-02 08:23:03.160Z | 249.863° W | 2026-11-02 09:07:03.160Z | 178.351° S | 47.016° | 2026-11-02 10:26:03.160Z | 111.819° ESE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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