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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
12508 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Create New Watchlist
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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 SL-8 R/B
1 12508U 81053B 26088.02629212 .00000087 00000-0 72772-4 0 9995
2 12508 82.9546 287.1883 0036308 235.1055 124.6688 13.76636480256383Epoch: 2026-03-29T00:37Z
TLE epoch observation values (Epoch: 2026-03-29T00:37:51.639Z)
Latitude
0°
Longitude
91.28504°
Altitude
994 km
Speed
7.347 km/s
True Right ascension
19h 08m 45s
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
15:34:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
999.677 km
Perigee altitude
946.297 km
Semi-major axis
7,351.124 km
Eccentricity
0.00363
Inclination
82.9546°
RAAN
287.1883°
Arg. of periapsis
235.1055°
True anomaly
125.01011°
Mean anomaly
124.6688°
Eccentric anomaly
124.83954°
Mean motion
3.4436 °/min
Orbital period
104.54 mins
BSTAR
0.000072772
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 #53 in the year 1981 (1981-06-04 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.SL-8 R/B 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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-03-29 12:57:34.287Z | 139.654° SSE | 2026-03-29 13:02:34.287Z | 79.609° E | 26.026° | 2026-03-29 13:06:34.287Z | 34.041° NE |
| 10 mins | 2026-03-29 14:42:34.287Z | 219.194° SW | 2026-03-29 14:47:34.287Z | 289.108° WNW | 33.21° | 2026-03-29 14:52:34.287Z | 349.889° N |
| 8 mins | 2026-03-29 23:54:34.287Z | 27.13° NE | 2026-03-29 23:58:34.287Z | 74.226° E | 21.776° | 2026-03-30 00:02:34.287Z | 118.727° SE |
| 10 mins | 2026-03-30 01:39:34.287Z | 337.36° NNW | 2026-03-30 01:43:34.287Z | 283.984° WNW | 37.285° | 2026-03-30 01:49:34.287Z | 196.711° 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 |
|---|