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: 9 hours ago
TLE from 9 hours ago
0 COSMOS 209
1 3158U 68023A 26177.71044685 -.00000066 00000-0 16723-4 0 9990
2 3158 65.3298 169.7855 0049195 246.5856 113.0037 13.97935047972345Epoch: 2026-06-26T17:03Z
TLE epoch observation values (Epoch: 2026-06-26T17:03:02.607Z)
Latitude
-0.00003°
Longitude
-0.81042°
Altitude
917.067 km
Speed
7.387 km/s
True Right ascension
11h 19m 08s
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
12:54:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
935.317 km
Perigee altitude
863.713 km
Semi-major axis
7,277.652 km
Eccentricity
0.00492
Inclination
65.3298°
RAAN
169.7855°
Arg. of periapsis
246.5856°
True anomaly
113.52135°
Mean anomaly
113.0037°
Eccentric anomaly
113.26265°
Mean motion
3.49588 °/min
Orbital period
102.98 mins
BSTAR
0.000016723
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-06-27 01:46:21.050Z | 226.243° WSW | 2026-06-27 01:51:21.050Z | 283.557° WNW | 40.27° | 2026-06-27 01:57:21.050Z | 23.392° NE |
| 4 mins | 2026-06-27 03:37:21.050Z | 306.566° NW | 2026-06-27 03:39:21.050Z | 327.358° NNW | 13.563° | 2026-06-27 03:41:21.050Z | 347.879° N |
| 8 mins | 2026-06-27 09:03:21.050Z | 0.103° NNE | 2026-06-27 09:06:21.050Z | 40.848° NE | 26.135° | 2026-06-27 09:11:21.050Z | 103.312° ESE |
| 10 mins | 2026-06-27 10:48:21.050Z | 315.456° NNW | 2026-06-27 10:53:21.050Z | 233.16° WSW | 37.623° | 2026-06-27 10:58:21.050Z | 172.355° S |
| 8 mins | 2026-06-28 00:05:21.050Z | 157.865° S | 2026-06-28 00:08:21.050Z | 118.046° SE | 26.904° | 2026-06-28 00:13:21.050Z | 54.745° ENE |
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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