COSMOS 397 DEB, 5155
Orbit data source: Space-Track
COSMOS 397 DEB, 5155 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
5155 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
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: 12 hours ago
TLE from 12 hours ago
0 COSMOS 397 DEB
1 05155U 71015AJ 25346.76993411 .00014726 00000-0 19550-2 0 9992
2 05155 65.3539 141.5664 0285778 75.6834 287.5813 14.55413035720561Epoch: 2025-12-12T18:28Z
TLE epoch observation values (Epoch: 2025-12-12T18:28:42.307Z)
Latitude
0.00005°
Longitude
142.68335°
Altitude
654.198 km
Speed
7.561 km/s
True Right ascension
09h 26m 15s
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
05:24:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
909.005 km
Perigee altitude
504.076 km
Semi-major axis
7,084.677 km
Eccentricity
0.02858
Inclination
65.3539°
RAAN
141.5664°
Arg. of periapsis
75.6834°
True anomaly
284.42705°
Mean anomaly
287.5813°
Eccentric anomaly
286.0074°
Mean motion
3.63968 °/min
Orbital period
98.91 mins
BSTAR
0.001955
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 #15 in the year 1971 (1971-02-25 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 397 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-12-13 11:06:44.610Z | 139.278° SSE | 2025-12-13 11:08:44.610Z | 106.663° ESE | 14.605° | 2025-12-13 11:10:44.610Z | 75.438° E |
| 5 mins | 2025-12-13 12:47:44.610Z | 247.034° WSW | 2025-12-13 12:49:44.610Z | 299.04° NW | 32.643° | 2025-12-13 12:52:44.610Z | 11.478° NNE |
| 7 mins | 2025-12-13 21:24:44.610Z | 318.951° NNW | 2025-12-13 21:27:44.610Z | 240.963° WSW | 41.743° | 2025-12-13 21:31:44.610Z | 162.229° S |
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 |
|---|