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
CYL, 1.1 m
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 26306.12434608 -.00000064 00000-0 17993-4 0 9995
2 3158 65.3314 193.6187 0040926 205.0538 154.8547 13.97941394990293Epoch: 2026-11-02T02:59Z
TLE epoch observation values (Epoch: 2026-11-02T02:59:03.501Z)
Latitude
-0.00003°
Longitude
107.44823°
Altitude
929.892 km
Speed
7.374 km/s
True Right ascension
12h 54m 28s
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
05:33:20
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
929.277 km
Perigee altitude
869.708 km
Semi-major axis
7,277.63 km
Eccentricity
0.00409
Inclination
65.3314°
RAAN
193.6187°
Arg. of periapsis
205.0538°
True anomaly
155.05306°
Mean anomaly
154.8547°
Eccentric anomaly
154.95397°
Mean motion
3.49589 °/min
Orbital period
102.98 mins
BSTAR
0.000017993
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-11-02 16:51:04.247Z | 136.401° SSE | 2026-11-02 16:54:04.247Z | 104.643° ESE | 16.467° | 2026-11-02 16:57:04.247Z | 73.201° E |
| 10 mins | 2026-11-02 18:35:04.247Z | 216.98° SW | 2026-11-02 18:39:04.247Z | 267.824° W | 75.804° | 2026-11-02 18:45:04.247Z | 28.361° NE |
| 6 mins | 2026-11-02 20:24:04.247Z | 295.61° NW | 2026-11-02 20:26:04.247Z | 317.657° NNW | 17.004° | 2026-11-02 20:30:04.247Z | 359.865° N |
| 7 mins | 2026-11-03 01:51:04.247Z | 6.049° NNE | 2026-11-03 01:54:04.247Z | 44.742° NE | 22.851° | 2026-11-03 01:58:04.247Z | 90.761° ESE |
| 10 mins | 2026-11-03 03:36:04.247Z | 322.209° NNW | 2026-11-03 03:40:04.247Z | 274.901° WNW | 66.066° | 2026-11-03 03:46:04.247Z | 160.794° 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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