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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Edit Public Description
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: 12 hours ago
TLE from 12 hours ago
0 THOR ABLESTAR DEB
1 261U 61015CH 26004.60510460 .00000240 00000-0 20701-3 0 9995
2 261 66.6817 100.6383 0080935 86.3795 274.6539 14.00978618289176Epoch: 2026-01-04T14:31Z
TLE epoch observation values (Epoch: 2026-01-04T14:31:21.037Z)
Latitude
-0.00006°
Longitude
138.5864°
Altitude
888.185 km
Speed
7.411 km/s
True Right ascension
06h 42m 33s
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
02:41:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
947.622 km
Perigee altitude
829.992 km
Semi-major axis
7,266.944 km
Eccentricity
0.00809
Inclination
66.6817°
RAAN
100.6383°
Arg. of periapsis
86.3795°
True anomaly
273.72879°
Mean anomaly
274.6539°
Eccentric anomaly
274.19142°
Mean motion
3.50361 °/min
Orbital period
102.75 mins
BSTAR
0.00020701
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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 | 2026-01-05 07:46:05.064Z | 201.883° SSW | 2026-01-05 07:52:05.064Z | 71.417° E | 43.671° | 2026-01-05 07:57:05.064Z | 32.113° NE |
| 6 mins | 2026-01-05 09:35:05.064Z | 281.527° WNW | 2026-01-05 09:38:05.064Z | 318.427° NNW | 17.645° | 2026-01-05 09:41:05.064Z | 354.041° N |
| 9 mins | 2026-01-05 16:47:05.064Z | 338.242° N | 2026-01-05 16:51:05.064Z | 51.752° ENE | 43.108° | 2026-01-05 16:56:05.064Z | 141.707° SSE |
| 5 mins | 2026-01-05 18:34:05.064Z | 280.455° WNW | 2026-01-05 18:36:05.064Z | 256.829° W | 15.77° | 2026-01-05 18:39:05.064Z | 222.986° SW |
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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