SL-8 DEB, 21210
Orbit data source: Space-Track
SL-8 DEB, 21210 is space debris in LEO originally from a launch on Tue, 12 Feb 1991 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
21210 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
CISRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.3 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 SL-8 DEB
1 21210U 91009BD 26071.13133959 -.00000065 00000-0 -49866-3 0 9994
2 21210 74.0917 83.1919 0135843 86.2745 342.5130 12.17462821553367Epoch: 2026-03-12T03:09Z
TLE epoch observation values (Epoch: 2026-03-12T03:09:07.740Z)
Latitude
63.42436°
Longitude
-99.33651°
Altitude
1,510.858 km
Speed
7.161 km/s
True Right ascension
07h 50m 55s
True Declination
63° 17' 59"
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
16:40:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,709.877 km
Perigee altitude
1,493.082 km
Semi-major axis
7,979.616 km
Eccentricity
0.01358
Inclination
74.0917°
RAAN
83.1919°
Arg. of periapsis
86.2745°
True anomaly
342.03755°
Mean anomaly
342.513°
Eccentric anomaly
342.27605°
Mean motion
3.04488 °/min
Orbital period
118.23 mins
BSTAR
-0.00049866
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 #9 in the year 1991 (1991-02-12 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 DEB 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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-03-12 13:16:33.791Z | 324.509° NNW | 2026-03-12 13:23:33.791Z | 269.373° W | 31.316° | 2026-03-12 13:31:33.791Z | 201.772° SSW |
| 13 mins | 2026-03-13 00:34:33.791Z | 149.089° SSE | 2026-03-13 00:41:33.791Z | 89.984° E | 27.799° | 2026-03-13 00:47:33.791Z | 41.403° NE |
| 16 mins | 2026-03-13 02:33:33.791Z | 219.327° SW | 2026-03-13 02:41:33.791Z | 299.954° NW | 39.604° | 2026-03-13 02:49:33.791Z | 11.046° NNE |
| 5 mins | 2026-03-13 04:42:33.791Z | 306.232° NW | 2026-03-13 04:44:33.791Z | 320.27° NNW | 12.12° | 2026-03-13 04:47:33.791Z | 340.915° N |
| 15 mins | 2026-03-13 10:56:33.791Z | 358.633° N | 2026-03-13 11:02:33.791Z | 54.191° ENE | 33.873° | 2026-03-13 11:11:33.791Z | 130.92° SE |
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 |
|---|