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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Edit Public Description
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: 7 hours ago
TLE from 7 hours ago
0 COSMOS 209
1 3158U 68023A 26036.13249134 -.00000068 00000-0 15393-4 0 9990
2 3158 65.3310 180.4131 0049653 289.3464 70.2241 13.97924786952556Epoch: 2026-02-05T03:10Z
TLE epoch observation values (Epoch: 2026-02-05T03:10:47.251Z)
Latitude
-0.00007°
Longitude
-2.57292°
Altitude
890.888 km
Speed
7.413 km/s
True Right ascension
12h 01m 39s
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
11:55:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
935.686 km
Perigee altitude
863.415 km
Semi-major axis
7,277.688 km
Eccentricity
0.00497
Inclination
65.331°
RAAN
180.4131°
Arg. of periapsis
289.3464°
True anomaly
70.76064°
Mean anomaly
70.2241°
Eccentric anomaly
70.49226°
Mean motion
3.49585 °/min
Orbital period
102.98 mins
BSTAR
0.000015393
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-02-05 10:09:59.774Z | 156.988° SSE | 2026-02-05 10:13:59.774Z | 109.221° ESE | 23.17° | 2026-02-05 10:17:59.774Z | 61.161° ENE |
| 10 mins | 2026-02-05 11:54:59.774Z | 233.084° WSW | 2026-02-05 11:59:59.774Z | 315.808° NNW | 38.42° | 2026-02-05 12:04:59.774Z | 20.859° NNE |
| 9 mins | 2026-02-05 19:10:59.774Z | 356.381° N | 2026-02-05 19:14:59.774Z | 55.231° ENE | 28.451° | 2026-02-05 19:19:59.774Z | 110.794° ESE |
| 9 mins | 2026-02-05 20:56:59.774Z | 308.598° NW | 2026-02-05 21:00:59.774Z | 242.057° WSW | 35.473° | 2026-02-05 21:05:59.774Z | 177.654° S |
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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