SCOUT X-4 R/B, 871
Orbit data source: Space-Track
SCOUT X-4 R/B, 871 is space debris in LEO originally from a launch on Tue, 25 Aug 1964 UTC launched from the Air Force Western Test Range (AFWTR). 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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Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 SCOUT X-4 R/B
1 871U 64051B 26099.10638809 .00000171 00000-0 10710-3 0 9994
2 871 79.8928 144.1538 0085248 330.5696 29.0678 14.00662956135196Epoch: 2026-04-09T02:33Z
TLE epoch observation values (Epoch: 2026-04-09T02:33:11.930Z)
Latitude
-0.00007°
Longitude
-91.50508°
Altitude
840.29 km
Speed
7.46 km/s
True Right ascension
09h 36m 36s
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
16:24:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
950.705 km
Perigee altitude
826.807 km
Semi-major axis
7,266.893 km
Eccentricity
0.00852
Inclination
79.8928°
RAAN
144.1538°
Arg. of periapsis
330.5696°
True anomaly
29.54686°
Mean anomaly
29.0678°
Eccentric anomaly
29.30688°
Mean motion
3.50364 °/min
Orbital period
102.75 mins
BSTAR
0.0001071
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Other satellites on launch #51 in the year 1964 (1964-08-25 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.SCOUT X-4 R/B 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-04-09 13:24:42.749Z | 20.262° NNE | 2026-04-09 13:28:42.749Z | 63.385° ENE | 19.94° | 2026-04-09 13:32:42.749Z | 108.835° ESE |
| 10 mins | 2026-04-09 15:08:42.749Z | 337.159° NNW | 2026-04-09 15:13:42.749Z | 246.558° WSW | 39.851° | 2026-04-09 15:18:42.749Z | 187.998° SSW |
| 7 mins | 2026-04-10 02:41:42.749Z | 125.343° SE | 2026-04-10 02:44:42.749Z | 84.852° E | 20.938° | 2026-04-10 02:48:42.749Z | 40.057° NE |
| 9 mins | 2026-04-10 04:23:42.749Z | 218.162° SW | 2026-04-10 04:27:42.749Z | 276.105° WNW | 35.175° | 2026-04-10 04:32:42.749Z | 355.439° 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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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 |
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