THORAD DELTA 1 DEB, 8139
Orbit data source: Space-Track
THORAD DELTA 1 DEB, 8139 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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8139 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, 0.5 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 THORAD DELTA 1 DEB
1 8139U 74089H 26048.53541001 -.00000007 00000-0 21392-3 0 9996
2 8139 101.6024 13.7124 0049618 249.8926 229.8320 12.61939119360011Epoch: 2026-02-17T12:50Z
TLE epoch observation values (Epoch: 2026-02-17T12:50:59.424Z)
Latitude
58.77695°
Longitude
-126.85249°
Altitude
1,449.767 km
Speed
7.131 km/s
True Right ascension
14h 13m 38s
True Declination
58° 38' 16"
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
05:35:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,451.129 km
Perigee altitude
1,373.818 km
Semi-major axis
7,790.61 km
Eccentricity
0.00496
Inclination
101.6024°
RAAN
13.7124°
Arg. of periapsis
249.8926°
True anomaly
229.39925°
Mean anomaly
229.832°
Eccentric anomaly
229.61545°
Mean motion
3.15636 °/min
Orbital period
114.06 mins
BSTAR
0.00021392
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-02-18 09:46:18.436Z | 29.952° NE | 2026-02-18 09:54:18.436Z | 109.523° ESE | 35.247° | 2026-02-18 10:01:18.436Z | 170.898° S |
| 13 mins | 2026-02-18 11:39:18.436Z | 0.574° NNE | 2026-02-18 11:45:18.436Z | 305.627° NW | 33.088° | 2026-02-18 11:52:18.436Z | 235.614° WSW |
| 14 mins | 2026-02-18 20:41:18.436Z | 135.743° SSE | 2026-02-18 20:47:18.436Z | 70.322° E | 39.501° | 2026-02-18 20:55:18.436Z | 351.432° N |
| 12 mins | 2026-02-18 22:34:18.436Z | 210.026° SW | 2026-02-18 22:39:18.436Z | 256.705° W | 28.267° | 2026-02-18 22:46:18.436Z | 321.097° 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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