SL-8 DEB, 21406
Orbit data source: Space-Track
SL-8 DEB, 21406 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.
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21406 intel report (Beta)
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Expand to show TLE details & historyLast TLE update: 20 hours ago
TLE from 20 hours ago
0 SL-8 DEB
1 21406U 91009BV 26070.83995853 .00000107 00000-0 98710-3 0 9993
2 21406 73.9132 207.7712 0135486 190.3827 325.4439 12.31824610568639Epoch: 2026-03-11T20:09Z
TLE epoch observation values (Epoch: 2026-03-11T20:09:32.416Z)
Latitude
24.05006°
Longitude
-91.47012°
Altitude
1,455.937 km
Speed
7.176 km/s
True Right ascension
01h 21m 39s
True Declination
23° 56' 01"
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
20:11:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,646.586 km
Perigee altitude
1,432.045 km
Semi-major axis
7,917.453 km
Eccentricity
0.01355
Inclination
73.9132°
RAAN
207.7712°
Arg. of periapsis
190.3827°
True anomaly
324.55086°
Mean anomaly
325.4439°
Eccentric anomaly
324.99863°
Mean motion
3.08081 °/min
Orbital period
116.85 mins
BSTAR
0.0009871
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Other satellites on launch #9 in the year 1991 (1991-02-12 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 DEB 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. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2026-03-12 19:17:32.091Z | 351.493° N | 2026-03-12 19:25:32.091Z | 55.59° ENE | 33.817° | 2026-03-12 19:33:32.091Z | 128.917° SE |
| 14 mins | 2026-03-12 21:18:32.091Z | 324.142° NNW | 2026-03-12 21:25:32.091Z | 254.974° W | 34.282° | 2026-03-12 21:32:32.091Z | 195.446° SSW |
| 12 mins | 2026-03-13 08:27:32.091Z | 135.559° SSE | 2026-03-13 08:33:32.091Z | 91.658° ESE | 22.633° | 2026-03-13 08:39:32.091Z | 47.651° ENE |
| 17 mins | 2026-03-13 10:23:32.091Z | 205.966° SW | 2026-03-13 10:31:32.091Z | 269.684° W | 43.903° | 2026-03-13 10:40:32.091Z | 15.784° NNE |
| 10 mins | 2026-03-13 12:28:32.091Z | 281.139° WNW | 2026-03-13 12:32:32.091Z | 309.341° NW | 17.783° | 2026-03-13 12:38:32.091Z | 351.72° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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