COSMOS 2143 DEB, 57721
Orbit data source: Space-Track
COSMOS 2143 DEB, 57721 is space debris in LEO originally from a launch on Thu, 16 May 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
57721 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
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 COSMOS 2143 DEB
1 57721U 91033J 26170.67316621 .00001100 00000-0 51678-2 0 9997
2 57721 82.1381 250.4201 0028394 48.8427 311.5113 12.74406502134026Epoch: 2026-06-19T16:09Z
TLE epoch observation values (Epoch: 2026-06-19T16:09:21.560Z)
Latitude
-0.00003°
Longitude
100.18149°
Altitude
1,352.24 km
Speed
7.189 km/s
True Right ascension
16h 41m 40s
True Declination
0° 00' 00"
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
21:35:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,383.338 km
Perigee altitude
1,339.387 km
Semi-major axis
7,739.499 km
Eccentricity
0.00284
Inclination
82.1381°
RAAN
250.4201°
Arg. of periapsis
48.8427°
True anomaly
311.26708°
Mean anomaly
311.5113°
Eccentric anomaly
311.38925°
Mean motion
3.18767 °/min
Orbital period
112.94 mins
BSTAR
0.0051678
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 #33 in the year 1991 (1991-05-16 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.COSMOS 2143 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 | 2026-06-22 16:20:51.585Z | 0.359° NNE | 2026-06-22 16:28:51.585Z | 86.342° E | 39.504° | 2026-06-22 16:35:51.585Z | 153.231° SSE |
| 11 mins | 2026-06-22 18:16:51.585Z | 323.513° NNW | 2026-06-22 18:21:51.585Z | 277.331° WNW | 25.668° | 2026-06-22 18:27:51.585Z | 224.096° SW |
| 13 mins | 2026-06-23 05:02:51.585Z | 156.584° SSE | 2026-06-23 05:08:51.585Z | 93.196° ESE | 36.595° | 2026-06-23 05:15:51.585Z | 21.084° NNE |
| 12 mins | 2026-06-23 06:57:51.585Z | 234.75° WSW | 2026-06-23 07:02:51.585Z | 284.424° WNW | 28.811° | 2026-06-23 07:09:51.585Z | 349.631° N |
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 |
|---|