THOR ABLESTAR DEB, 538
Orbit data source: Space-Track
THOR ABLESTAR DEB, 538 is space debris in LEO originally from a launch on Thu, 29 Jun 1961 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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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
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 THOR ABLESTAR DEB
1 538U 61015FX 26127.22824822 .00003888 00000-0 73632-3 0 9998
2 538 67.8040 69.8372 0012118 280.9393 79.0369 14.65241714357605Epoch: 2026-05-07T05:28Z
TLE epoch observation values (Epoch: 2026-05-07T05:28:40.646Z)
Latitude
0.00003°
Longitude
122.59046°
Altitude
676.911 km
Speed
7.52 km/s
True Right ascension
04h 39m 20s
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
07:33:03
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
683.065 km
Perigee altitude
665.973 km
Semi-major axis
7,052.656 km
Eccentricity
0.00121
Inclination
67.804°
RAAN
69.8372°
Arg. of periapsis
280.9393°
True anomaly
79.17327°
Mean anomaly
79.0369°
Eccentric anomaly
79.10508°
Mean motion
3.66449 °/min
Orbital period
98.24 mins
BSTAR
0.00073632
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Other satellites on launch #15 in the year 1961 (1961-06-29 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.THOR ABLESTAR 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-05-08 06:35:15.916Z | 342.445° N | 2026-05-08 06:39:15.916Z | 38.946° NE | 37.897° | 2026-05-08 06:44:15.916Z | 136.038° SSE |
| 4 mins | 2026-05-08 08:18:15.916Z | 280.577° WNW | 2026-05-08 08:20:15.916Z | 251.624° W | 15.929° | 2026-05-08 08:22:15.916Z | 224.188° SW |
| 7 mins | 2026-05-08 20:56:15.916Z | 167.991° S | 2026-05-08 20:59:15.916Z | 100.778° ESE | 32.374° | 2026-05-08 21:03:15.916Z | 43.135° NE |
| 6 mins | 2026-05-08 22:37:15.916Z | 265.544° W | 2026-05-08 22:40:15.916Z | 315.932° NNW | 22.113° | 2026-05-08 22:43:15.916Z | 358.732° N |
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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