SL-8 R/B, 20104
Orbit data source: Space-Track
SL-8 R/B, 20104 is space debris in LEO originally from a launch on Tue, 04 Jul 1989 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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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20104 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Omsk Av. Zav.
Mission
Spacecraft
Bus & Motor
S3, Unknown motor
Mass
1,434 kg wet, 1,434 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 2.1 m
Radar Cross Section
10.179 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 SL-8 R/B
1 20104U 89050B 26171.45965644 .00000070 00000-0 55158-4 0 9994
2 20104 82.9563 249.2594 0042601 328.4214 31.4388 13.77618967857332Epoch: 2026-06-20T11:01Z
TLE epoch observation values (Epoch: 2026-06-20T11:01:54.316Z)
Latitude
0.00002°
Longitude
175.10911°
Altitude
948.562 km
Speed
7.391 km/s
True Right ascension
16h 37m 02s
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
23:08:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,000.79 km
Perigee altitude
938.187 km
Semi-major axis
7,347.626 km
Eccentricity
0.00426
Inclination
82.9563°
RAAN
249.2594°
Arg. of periapsis
328.4214°
True anomaly
31.69459°
Mean anomaly
31.4388°
Eccentric anomaly
31.56658°
Mean motion
3.44606 °/min
Orbital period
104.47 mins
BSTAR
0.000055158
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Other satellites on launch #50 in the year 1989 (1989-07-04 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.SL-8 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-06-22 15:54:43.895Z | 18.733° NNE | 2026-06-22 15:59:43.895Z | 78.184° E | 25.687° | 2026-06-22 16:04:43.895Z | 131.227° SE |
| 10 mins | 2026-06-22 17:40:43.895Z | 331.087° NNW | 2026-06-22 17:44:43.895Z | 273.454° WNW | 34.054° | 2026-06-22 17:50:43.895Z | 202.152° SSW |
| 10 mins | 2026-06-23 05:23:43.895Z | 167.409° S | 2026-06-23 05:27:43.895Z | 93.375° ESE | 41.779° | 2026-06-23 05:33:43.895Z | 13.816° NNE |
| 7 mins | 2026-06-23 07:10:43.895Z | 258.92° W | 2026-06-23 07:13:43.895Z | 293.102° NW | 17.869° | 2026-06-23 07:17:43.895Z | 333.993° NNW |
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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