THOR ABLESTAR DEB, 261
Orbit data source: Space-Track
THOR ABLESTAR DEB, 261 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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261 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
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 THOR ABLESTAR DEB
1 261U 61015CH 26095.48095056 .00000155 00000-0 15146-3 0 9992
2 261 66.6804 233.8404 0085610 19.8157 340.6217 14.01023054301902Epoch: 2026-04-05T11:32Z
TLE epoch observation values (Epoch: 2026-04-05T11:32:34.128Z)
Latitude
-0.00006°
Longitude
-133.08758°
Altitude
833.685 km
Speed
7.466 km/s
True Right ascension
15h 35m 21s
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
23:25:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
950.865 km
Perigee altitude
826.443 km
Semi-major axis
7,266.791 km
Eccentricity
0.00856
Inclination
66.6804°
RAAN
233.8404°
Arg. of periapsis
19.8157°
True anomaly
340.29288°
Mean anomaly
340.6217°
Eccentric anomaly
340.45762°
Mean motion
3.50372 °/min
Orbital period
102.75 mins
BSTAR
0.00015146
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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 | 2026-04-05 18:55:26.830Z | 354.043° N | 2026-04-05 18:59:26.830Z | 41.936° NE | 25.724° | 2026-04-05 19:04:26.830Z | 105.007° ESE |
| 10 mins | 2026-04-05 20:41:26.830Z | 315.165° NNW | 2026-04-05 20:45:26.830Z | 256.963° W | 37.155° | 2026-04-05 20:51:26.830Z | 174.376° S |
| 8 mins | 2026-04-06 09:56:26.830Z | 165.939° S | 2026-04-06 10:00:26.830Z | 104.155° ESE | 29.041° | 2026-04-06 10:04:26.830Z | 50.94° ENE |
| 8 mins | 2026-04-06 11:42:26.830Z | 253.817° W | 2026-04-06 11:45:26.830Z | 301.01° NW | 29.844° | 2026-04-06 11:50:26.830Z | 11.534° NNE |
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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