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
Defense Sigint
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, 2.9 m
Radar Cross Section
6.586 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 COSMOS 209
1 03158U 68023A 25259.26708420 -.00000063 00000-0 18782-4 0 9998
2 03158 65.3319 191.7813 0040885 334.8042 25.1032 13.97908460932728Epoch: 2025-09-16T06:24Z
TLE epoch observation values (Epoch: 2025-09-16T06:24:36.074Z)
Latitude
-0.0001°
Longitude
100.1711°
Altitude
876.084 km
Speed
7.428 km/s
True Right ascension
12h 47m 07s
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
07:42:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
929.362 km
Perigee altitude
869.852 km
Semi-major axis
7,277.744 km
Eccentricity
0.00409
Inclination
65.3319°
RAAN
191.7813°
Arg. of periapsis
334.8042°
True anomaly
25.30289°
Mean anomaly
25.1032°
Eccentric anomaly
25.20295°
Mean motion
3.49581 °/min
Orbital period
102.98 mins
BSTAR
0.000018782
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2025-09-16 20:15:27.600Z | 163.242° S | 2025-09-16 20:20:27.600Z | 100.946° ESE | 24.303° | 2025-09-16 20:24:27.600Z | 56.04° ENE |
| 10 mins | 2025-09-16 22:01:27.600Z | 238.604° WSW | 2025-09-16 22:05:27.600Z | 298.762° NW | 36.444° | 2025-09-16 22:11:27.600Z | 21.297° NNE |
| 9 mins | 2025-09-17 05:16:27.600Z | 352.012° N | 2025-09-17 05:20:27.600Z | 47.911° ENE | 30.035° | 2025-09-17 05:25:27.600Z | 111.425° ESE |
| 9 mins | 2025-09-17 07:02:27.600Z | 308.589° NW | 2025-09-17 07:06:27.600Z | 251.87° W | 33.479° | 2025-09-17 07:11:27.600Z | 182.331° SSW |
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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