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
RCS unknown
Expand to show TLE details & historyLast TLE update: 3 days ago
TLE from 3 days ago
0 ATLAS 5 CENTAUR DEB
1 55857U 18079HK 26256.86252665 -.00000139 00000-0 00000-0 0 9990
2 55857 13.8007 340.1507 4506001 65.5449 334.3325 2.00140838 28492Epoch: 2026-09-13T20:42Z
TLE epoch observation values (Epoch: 2026-09-13T20:42:02.302Z)
Latitude
-0.00001°
Longitude
36.79178°
Altitude
11,478.85 km
Speed
5.446 km/s
True Right ascension
22h 40m 36s
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
16:01:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
32,207.656 km
Perigee altitude
8,235.836 km
Semi-major axis
26,599.883 km
Eccentricity
0.4506
Inclination
13.8007°
RAAN
340.1507°
Arg. of periapsis
65.5449°
True anomaly
294.21154°
Mean anomaly
334.3325°
Eccentric anomaly
316.59053°
Mean motion
0.50029 °/min
Orbital period
719.58 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. |
|---|---|---|---|---|---|---|---|
| 103 mins | 2026-09-17 08:27:29.505Z | 237.955° WSW | 2026-09-17 09:24:29.505Z | 168.967° S | 42.942° | 2026-09-17 10:10:29.505Z | 102.126° 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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