COSMOS 397 DEB, 21723
Orbit data source: Space-Track
COSMOS 397 DEB, 21723 is space debris in LEO originally from a launch on Thu, 25 Feb 1971 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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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21723 intel report (Beta)
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Edit Public Description
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
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 397 DEB
1 21723U 71015DW 25349.90249788 .00014049 00000-0 12495-2 0 9990
2 21723 65.6659 217.2332 0214344 164.2421 196.5507 14.80305894744383Epoch: 2025-12-15T21:39Z
TLE epoch observation values (Epoch: 2025-12-15T21:39:35.816Z)
Latitude
-0.00007°
Longitude
167.53954°
Altitude
774.66 km
Speed
7.39 km/s
True Right ascension
14h 28m 55s
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
03:06:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
776.967 km
Perigee altitude
476.673 km
Semi-major axis
7,004.957 km
Eccentricity
0.02143
Inclination
65.6659°
RAAN
217.2332°
Arg. of periapsis
164.2421°
True anomaly
195.86857°
Mean anomaly
196.5507°
Eccentric anomaly
196.20791°
Mean motion
3.70199 °/min
Orbital period
97.25 mins
BSTAR
0.0012495
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Other satellites on launch #15 in the year 1971 (1971-02-25 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.COSMOS 397 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-12-16 15:38:00.737Z | 136.108° SSE | 2025-12-16 15:40:00.737Z | 111.801° ESE | 14.023° | 2025-12-16 15:42:00.737Z | 85.491° E |
| 8 mins | 2025-12-16 17:16:00.737Z | 220.639° SW | 2025-12-16 17:20:00.737Z | 314.501° NW | 42.811° | 2025-12-16 17:24:00.737Z | 24.476° NE |
| 6 mins | 2025-12-17 01:47:00.737Z | 338.899° N | 2025-12-17 01:50:00.737Z | 81.295° E | 41.038° | 2025-12-17 01:53:00.737Z | 138.571° SSE |
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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