THORAD DELTA 1 DEB, 18539
Orbit data source: Space-Track
THORAD DELTA 1 DEB, 18539 is space debris in SSO originally from a launch on Fri, 15 Nov 1974 UTC launched from the Air Force Western Test Range (AFWTR). 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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18539 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 THORAD DELTA 1 DEB
1 18539U 74089EZ 26208.22025441 .00000250 00000-0 18227-2 0 9991
2 18539 101.5659 122.0351 0031416 26.0233 131.4368 12.54256389597608Epoch: 2026-07-27T05:17Z
TLE epoch observation values (Epoch: 2026-07-27T05:17:09.981Z)
Latitude
21.80873°
Longitude
-77.48931°
Altitude
1,465.425 km
Speed
7.124 km/s
True Right ascension
20h 26m 50s
True Declination
21° 42' 04"
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
10:32:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,468.847 km
Perigee altitude
1,419.698 km
Semi-major axis
7,822.409 km
Eccentricity
0.00314
Inclination
101.5659°
RAAN
122.0351°
Arg. of periapsis
26.0233°
True anomaly
131.70599°
Mean anomaly
131.4368°
Eccentric anomaly
131.57146°
Mean motion
3.13713 °/min
Orbital period
114.75 mins
BSTAR
0.0018227
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Other satellites on launch #89 in the year 1974 (1974-11-15 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.THORAD DELTA 1 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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-07-28 05:59:16.556Z | 42.299° NE | 2026-07-28 06:05:16.556Z | 93.801° ESE | 25.704° | 2026-07-28 06:12:16.556Z | 152.125° SSE |
| 14 mins | 2026-07-28 07:52:16.556Z | 7.384° NNE | 2026-07-28 07:58:16.556Z | 302.531° NW | 41.344° | 2026-07-28 08:06:16.556Z | 216.303° SW |
| 6 mins | 2026-07-28 09:47:16.556Z | 331.577° NNW | 2026-07-28 09:49:16.556Z | 316.387° NNW | 13.421° | 2026-07-28 09:53:16.556Z | 286.866° WNW |
| 12 mins | 2026-07-28 16:58:16.556Z | 117.869° SE | 2026-07-28 17:04:16.556Z | 54.422° ENE | 31.674° | 2026-07-28 17:10:16.556Z | 0.298° NNE |
| 13 mins | 2026-07-28 18:50:16.556Z | 191.363° SSW | 2026-07-28 18:56:16.556Z | 256.517° W | 36.649° | 2026-07-28 19:03:16.556Z | 329.171° NNW |
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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