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: 8 hours ago
TLE from 8 hours ago
0 THOR ABLESTAR DEB
1 00261U 61015CH 26144.95115683 .00000111 00000-0 12301-3 0 9990
2 00261 66.6797 110.3718 0089769 345.6285 14.2246 14.01038579308834Epoch: 2026-05-24T22:49Z
TLE epoch observation values (Epoch: 2026-05-24T22:49:39.950Z)
Latitude
-0°
Longitude
-114.5906°
Altitude
829.06 km
Speed
7.471 km/s
True Right ascension
07h 21m 29s
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
15:31:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
953.833 km
Perigee altitude
823.367 km
Semi-major axis
7,266.737 km
Eccentricity
0.00898
Inclination
66.6797°
RAAN
110.3718°
Arg. of periapsis
345.6285°
True anomaly
14.48015°
Mean anomaly
14.2246°
Eccentric anomaly
14.35209°
Mean motion
3.50376 °/min
Orbital period
102.75 mins
BSTAR
0.00012301
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-05-25 07:56:01.862Z | 344.254° N | 2026-05-25 08:01:01.862Z | 53.378° ENE | 36.313° | 2026-05-25 08:07:01.862Z | 128.305° SE |
| 8 mins | 2026-05-25 09:43:01.862Z | 298.246° NW | 2026-05-25 09:46:01.862Z | 260.066° W | 25.905° | 2026-05-25 09:51:01.862Z | 198.255° SSW |
| 9 mins | 2026-05-25 22:57:01.862Z | 188.878° SSW | 2026-05-25 23:01:01.862Z | 98.039° ESE | 41.091° | 2026-05-25 23:06:01.862Z | 36.452° NE |
| 7 mins | 2026-05-26 00:44:01.862Z | 276.699° WNW | 2026-05-26 00:47:01.862Z | 317.421° NNW | 21.306° | 2026-05-26 00:51:01.862Z | 3.457° 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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