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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
261 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
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
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 THOR ABLESTAR DEB
1 00261U 61015CH 26244.38960534 .00000058 00000-0 88442-4 0 9991
2 00261 66.6791 222.1699 0095157 281.0260 78.0132 14.01068695322764Epoch: 2026-09-01T09:21Z
TLE epoch observation values (Epoch: 2026-09-01T09:21:01.901Z)
Latitude
0.00001°
Longitude
101.3548°
Altitude
878.44 km
Speed
7.42 km/s
True Right ascension
14h 48m 40s
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
08:45:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
957.643 km
Perigee altitude
819.349 km
Semi-major axis
7,266.633 km
Eccentricity
0.00952
Inclination
66.6791°
RAAN
222.1699°
Arg. of periapsis
281.026°
True anomaly
79.08242°
Mean anomaly
78.0132°
Eccentric anomaly
78.54755°
Mean motion
3.50383 °/min
Orbital period
102.74 mins
BSTAR
0.000088442
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #15 in the year 1961 (1961-06-29 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-09-02 23:09:21.372Z | 168.102° S | 2026-09-02 23:14:21.372Z | 100.245° ESE | 29.214° | 2026-09-02 23:19:21.372Z | 46.637° ENE |
| 9 mins | 2026-09-03 00:55:21.372Z | 246.035° WSW | 2026-09-03 00:59:21.372Z | 304.379° NW | 32.839° | 2026-09-03 01:04:21.372Z | 12.516° NNE |
| 9 mins | 2026-09-03 08:09:21.372Z | 352.814° N | 2026-09-03 08:13:21.372Z | 43.532° NE | 29.663° | 2026-09-03 08:18:21.372Z | 110.749° ESE |
| 9 mins | 2026-09-03 09:55:21.372Z | 309.883° NW | 2026-09-03 09:59:21.372Z | 251.912° W | 33.706° | 2026-09-03 10:04:21.372Z | 183.875° SSW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|