SL-8 DEB, 21955
Orbit data source: Space-Track
SL-8 DEB, 21955 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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21955 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: 3 days ago
TLE from 3 days ago
0 SL-8 DEB
1 21955U 91009CF 26171.18739199 .00000240 00000-0 27133-2 0 9999
2 21955 74.2995 86.4114 0161365 41.5224 108.6544 12.08346522555651Epoch: 2026-06-20T04:29Z
TLE epoch observation values (Epoch: 2026-06-20T04:29:50.667Z)
Latitude
26.9869°
Longitude
-77.64558°
Altitude
1,689.758 km
Speed
7.014 km/s
True Right ascension
17h 12m 53s
True Declination
26° 51' 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
03:47:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,770.979 km
Perigee altitude
1,512.159 km
Semi-major axis
8,019.706 km
Eccentricity
0.01614
Inclination
74.2995°
RAAN
86.4114°
Arg. of periapsis
41.5224°
True anomaly
110.39486°
Mean anomaly
108.6544°
Eccentric anomaly
109.52578°
Mean motion
3.02208 °/min
Orbital period
119.12 mins
BSTAR
0.0027133
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-06-22 17:23:32.136Z | 124.383° SE | 2026-06-22 17:28:32.136Z | 87.9° E | 17.19° | 2026-06-22 17:33:32.136Z | 52.104° ENE |
| 16 mins | 2026-06-22 19:21:32.136Z | 199.281° SSW | 2026-06-22 19:28:32.136Z | 255.526° W | 44.868° | 2026-06-22 19:37:32.136Z | 18.006° NNE |
| 10 mins | 2026-06-22 21:27:32.136Z | 278.164° WNW | 2026-06-22 21:31:32.136Z | 309.181° NW | 18.527° | 2026-06-22 21:37:32.136Z | 353.303° N |
| 14 mins | 2026-06-23 03:47:32.136Z | 3.275° NNE | 2026-06-23 03:54:32.136Z | 60.199° ENE | 26.663° | 2026-06-23 04:01:32.136Z | 111.059° ESE |
| 17 mins | 2026-06-23 05:48:32.136Z | 335.079° NNW | 2026-06-23 05:56:32.136Z | 254.175° W | 42.97° | 2026-06-23 06:05:32.136Z | 177.159° S |
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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