SL-8 DEB, 21249
Orbit data source: Space-Track
SL-8 DEB, 21249 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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21249 intel report (Beta)
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Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 SL-8 DEB
1 21249U 91009BG 26070.75580463 .00000034 00000-0 44865-3 0 9997
2 21249 74.0699 279.9937 0121999 309.2671 129.2095 12.22360807562046Epoch: 2026-03-11T18:08Z
TLE epoch observation values (Epoch: 2026-03-11T18:08:21.520Z)
Latitude
71.10058°
Longitude
-105.44488°
Altitude
1,656.311 km
Speed
7.023 km/s
True Right ascension
22h 24m 14s
True Declination
71° 00' 24"
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
13:48:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,677.229 km
Perigee altitude
1,483.049 km
Semi-major axis
7,958.276 km
Eccentricity
0.0122
Inclination
74.0699°
RAAN
279.9937°
Arg. of periapsis
309.2671°
True anomaly
130.28232°
Mean anomaly
129.2095°
Eccentric anomaly
129.74695°
Mean motion
3.05714 °/min
Orbital period
117.76 mins
BSTAR
0.00044865
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-03-12 13:27:05.975Z | 138.984° SSE | 2026-03-12 13:33:05.975Z | 94.064° ESE | 23.31° | 2026-03-12 13:40:05.975Z | 42.947° NE |
| 17 mins | 2026-03-12 15:25:05.975Z | 209.77° SW | 2026-03-12 15:33:05.975Z | 309.185° NW | 43.123° | 2026-03-12 15:42:05.975Z | 15.546° NNE |
| 9 mins | 2026-03-12 17:31:05.975Z | 288.01° WNW | 2026-03-12 17:35:05.975Z | 316.692° NNW | 16.576° | 2026-03-12 17:40:05.975Z | 350.612° N |
| 15 mins | 2026-03-12 23:46:05.975Z | 359.02° N | 2026-03-12 23:53:05.975Z | 54.804° ENE | 30.577° | 2026-03-13 00:01:05.975Z | 118.559° SE |
| 17 mins | 2026-03-13 01:46:05.975Z | 331.569° NNW | 2026-03-13 01:54:05.975Z | 258.207° W | 40.522° | 2026-03-13 02:03:05.975Z | 183.563° 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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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