COSMOS 209, 3158
Orbit data source: Space-Track
COSMOS 209, 3158 is a payload satellite owned by TSKBM (CIS) in LEO that was launched on Fri, 22 Mar 1968 UTC via a TSIKLON-2A launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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3158 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
TSKBM/KB1
Mission
Spacecraft
Bus & Motor
US-A REACTOR, Unknown motor
Mass
3,800 kg wet, 1,140 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 22 hours ago
TLE from 22 hours ago
0 COSMOS 209
1 03158U 68023A 26079.34284421 -.00000090 00000-0 -41815-6 0 9994
2 03158 65.3309 67.2952 0050659 276.3116 83.2185 13.97928338958593Epoch: 2026-03-20T08:13Z
TLE epoch observation values (Epoch: 2026-03-20T08:13:41.739Z)
Latitude
-0.0001°
Longitude
125.99197°
Altitude
898.775 km
Speed
7.405 km/s
True Right ascension
04h 29m 10s
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
11:00:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
936.406 km
Perigee altitude
862.67 km
Semi-major axis
7,277.675 km
Eccentricity
0.00507
Inclination
65.3309°
RAAN
67.2952°
Arg. of periapsis
276.3116°
True anomaly
83.79537°
Mean anomaly
83.2185°
Eccentric anomaly
83.50689°
Mean motion
3.49586 °/min
Orbital period
102.98 mins
BSTAR
-4.1815e-7
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Other satellites on launch #23 in the year 1968 (1968-03-22 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 209 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 | 2026-03-21 08:48:09.952Z | 347.589° N | 2026-03-21 08:53:09.952Z | 54.831° ENE | 30.335° | 2026-03-21 08:58:09.952Z | 113.601° SE |
| 9 mins | 2026-03-21 10:35:09.952Z | 306.132° NW | 2026-03-21 10:39:09.952Z | 243.68° WSW | 33.077° | 2026-03-21 10:44:09.952Z | 181.44° SSW |
| 9 mins | 2026-03-21 23:51:09.952Z | 167.907° S | 2026-03-21 23:55:09.952Z | 102.716° ESE | 31.698° | 2026-03-22 00:00:09.952Z | 46.81° ENE |
| 9 mins | 2026-03-22 01:37:09.952Z | 254.539° W | 2026-03-22 01:41:09.952Z | 317.91° NNW | 31.072° | 2026-03-22 01:46:09.952Z | 16.072° NNE |
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 |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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