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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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: 3 days ago
TLE from 3 days ago
0 COSMOS 397 DEB
1 21723U 71015DW 26089.47026796 .00040633 00000-0 33385-2 0 9995
2 21723 65.6647 266.6055 0188181 104.0085 258.2035 14.86131121759897Epoch: 2026-03-30T11:17Z
TLE epoch observation values (Epoch: 2026-03-30T11:17:11.151Z)
Latitude
0.00002°
Longitude
-90.5523°
Altitude
641.362 km
Speed
7.522 km/s
True Right ascension
17h 46m 25s
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
01:06:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
739.971 km
Perigee altitude
477.02 km
Semi-major axis
6,986.633 km
Eccentricity
0.01882
Inclination
65.6647°
RAAN
266.6055°
Arg. of periapsis
104.0085°
True anomaly
256.10322°
Mean anomaly
258.2035°
Eccentric anomaly
257.1523°
Mean motion
3.71656 °/min
Orbital period
96.86 mins
BSTAR
0.0033385
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-04-02 22:12:36.518Z | 310.157° NW | 2026-04-02 22:14:36.518Z | 262.687° W | 35.246° | 2026-04-02 22:18:36.518Z | 169.626° S |
| 6 mins | 2026-04-03 12:19:36.518Z | 191.193° SSW | 2026-04-03 12:22:36.518Z | 102.164° ESE | 39.567° | 2026-04-03 12:25:36.518Z | 41.062° NE |
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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