SL-8 DEB, 21250
Orbit data source: Space-Track
SL-8 DEB, 21250 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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21250 intel report (Beta)
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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, 0.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 SL-8 DEB
1 21250U 91009BH 26070.91521697 .00000188 00000-0 19176-2 0 9997
2 21250 74.0646 19.0273 0139643 93.8836 326.0987 12.18893020557505Epoch: 2026-03-11T21:57Z
TLE epoch observation values (Epoch: 2026-03-11T21:57:54.746Z)
Latitude
55.67579°
Longitude
-95.43242°
Altitude
1,514.261 km
Speed
7.154 km/s
True Right ascension
02h 54m 28s
True Declination
55° 31' 51"
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
10:33:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,706.577 km
Perigee altitude
1,483.892 km
Semi-major axis
7,973.372 km
Eccentricity
0.01396
Inclination
74.0646°
RAAN
19.0273°
Arg. of periapsis
93.8836°
True anomaly
325.1931°
Mean anomaly
326.0987°
Eccentric anomaly
325.64722°
Mean motion
3.04846 °/min
Orbital period
118.09 mins
BSTAR
0.0019176
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-03-12 06:14:21.469Z | 67.856° E | 2026-03-12 06:14:21.469Z | 67.856° E | 22.314° | 2026-03-12 06:19:21.469Z | 103.439° ESE |
| 16 mins | 2026-03-12 08:07:21.469Z | 336.679° NNW | 2026-03-12 08:14:21.469Z | 254.81° W | 44.143° | 2026-03-12 08:23:21.469Z | 171.303° S |
| 5 mins | 2026-03-12 10:11:21.469Z | 287.238° WNW | 2026-03-12 10:13:21.469Z | 273.213° WNW | 12.438° | 2026-03-12 10:16:21.469Z | 252.774° W |
| 5 mins | 2026-03-12 19:29:21.469Z | 100.027° ESE | 2026-03-12 19:31:21.469Z | 86.021° E | 12.692° | 2026-03-12 19:34:21.469Z | 65.438° ENE |
| 16 mins | 2026-03-12 21:22:21.469Z | 188.298° SSW | 2026-03-12 21:30:21.469Z | 98.162° ESE | 44.207° | 2026-03-12 21:38:21.469Z | 22.38° NNE |
| 12 mins | 2026-03-12 23:26:21.469Z | 262.639° W | 2026-03-12 23:31:21.469Z | 302.894° NW | 22.981° | 2026-03-12 23:38:21.469Z | 357.958° N |
| 11 mins | 2026-03-13 05:45:21.469Z | 10.385° NNE | 2026-03-13 05:50:21.469Z | 49.658° ENE | 20.103° | 2026-03-13 05:56:21.469Z | 94.774° ESE |
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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