SL-8 R/B, 3131
Orbit data source: Space-Track
SL-8 R/B, 3131 is space debris in LEO originally from a launch on Tue, 20 Feb 1968 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
Embed this page
Focus sentinelFocus sentinel
3131 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Yuzhnoe
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: 18 hours ago
TLE from 18 hours ago
0 SL-8 R/B
1 03131U 68011B 25287.96064273 -.00000104 00000-0 -21607-3 0 9991
2 03131 74.0477 120.8392 0014299 12.0732 348.0697 13.18027570773046Epoch: 2025-10-14T23:03Z
TLE epoch observation values (Epoch: 2025-10-14T23:03:19.531Z)
Latitude
-0.00001°
Longitude
111.26625°
Altitude
1,184.138 km
Speed
7.267 km/s
True Right ascension
08h 03m 21s
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
11:37:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,200.841 km
Perigee altitude
1,179.197 km
Semi-major axis
7,568.156 km
Eccentricity
0.00143
Inclination
74.0477°
RAAN
120.8392°
Arg. of periapsis
12.0732°
True anomaly
348.03577°
Mean anomaly
348.0697°
Eccentric anomaly
348.05274°
Mean motion
3.29654 °/min
Orbital period
109.21 mins
BSTAR
-0.00021607
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 #11 in the year 1968 (1968-02-20 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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2025-10-15 23:18:19.976Z | 356.531° N | 2025-10-15 23:24:19.976Z | 56.274° ENE | 32.04° | 2025-10-15 23:31:19.976Z | 128.876° SE |
| 12 mins | 2025-10-16 01:10:19.976Z | 322.764° NNW | 2025-10-16 01:16:19.976Z | 254.699° W | 32.762° | 2025-10-16 01:22:19.976Z | 195.952° SSW |
| 12 mins | 2025-10-16 13:25:19.976Z | 169.782° S | 2025-10-16 13:30:19.976Z | 108.13° ESE | 37.912° | 2025-10-16 13:37:19.976Z | 29.447° NE |
| 11 mins | 2025-10-16 15:17:19.976Z | 248.229° W | 2025-10-16 15:22:19.976Z | 302.426° NW | 27.149° | 2025-10-16 15:28:19.976Z | 0.123° NNE |
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 ascending 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 ascending order |
|---|