SL-8 R/B, 12508
Orbit data source: Space-Track
SL-8 R/B, 12508 is space debris in LEO originally from a launch on Thu, 04 Jun 1981 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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12508 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
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 SL-8 R/B
1 12508U 81053B 26223.86810404 .00000035 00000-0 20276-4 0 9998
2 12508 82.9596 186.4936 0036439 214.2510 145.6297 13.76648358275070Epoch: 2026-08-11T20:50Z
TLE epoch observation values (Epoch: 2026-08-11T20:50:04.189Z)
Latitude
-0.00001°
Longitude
-86.35407°
Altitude
1,000.855 km
Speed
7.34 km/s
True Right ascension
12h 25m 58s
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
17:18:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
999.731 km
Perigee altitude
946.158 km
Semi-major axis
7,351.082 km
Eccentricity
0.00364
Inclination
82.9596°
RAAN
186.4936°
Arg. of periapsis
214.251°
True anomaly
145.86455°
Mean anomaly
145.6297°
Eccentric anomaly
145.74721°
Mean motion
3.44363 °/min
Orbital period
104.54 mins
BSTAR
0.000020276
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Other satellites on launch #53 in the year 1981 (1981-06-04 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-08-12 07:54:58.077Z | 42.057° NE | 2026-08-12 07:56:58.077Z | 62.355° ENE | 13.907° | 2026-08-12 07:59:58.077Z | 93.131° ESE |
| 10 mins | 2026-08-12 09:38:58.077Z | 350.188° N | 2026-08-12 09:43:58.077Z | 209.119° SW | 44.072° | 2026-08-12 09:48:58.077Z | 178.891° S |
| 9 mins | 2026-08-12 21:22:58.077Z | 140.108° SSE | 2026-08-12 21:26:58.077Z | 87.845° E | 28.768° | 2026-08-12 21:31:58.077Z | 28.803° NE |
| 10 mins | 2026-08-12 23:07:58.077Z | 226.488° WSW | 2026-08-12 23:11:58.077Z | 278.453° WNW | 30.58° | 2026-08-12 23:17:58.077Z | 350.034° 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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