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, 2.9 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 6 hours ago
TLE from 6 hours ago
0 COSMOS 209
1 03158U 68023A 26253.54267647 -.00000058 00000-0 22245-4 0 9998
2 03158 65.3337 331.2704 0045121 222.7718 136.9838 13.97938625982941Epoch: 2026-09-10T13:01Z
TLE epoch observation values (Epoch: 2026-09-10T13:01:27.247Z)
Latitude
-0.00006°
Longitude
146.32796°
Altitude
926.995 km
Speed
7.377 km/s
True Right ascension
22h 05m 04s
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
11:29:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
932.34 km
Perigee altitude
866.665 km
Semi-major axis
7,277.639 km
Eccentricity
0.00451
Inclination
65.3337°
RAAN
331.2704°
Arg. of periapsis
222.7718°
True anomaly
137.33508°
Mean anomaly
136.9838°
Eccentric anomaly
137.15959°
Mean motion
3.49589 °/min
Orbital period
102.98 mins
BSTAR
0.000022245
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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 | 2026-09-11 06:18:05.718Z | 181.47° SSW | 2026-09-11 06:23:05.718Z | 122.54° SE | 43.258° | 2026-09-11 06:29:05.718Z | 44.171° NE |
| 10 mins | 2026-09-11 08:05:05.718Z | 252.452° W | 2026-09-11 08:10:05.718Z | 320.758° NNW | 33.87° | 2026-09-11 08:15:05.718Z | 15.489° NNE |
| 10 mins | 2026-09-11 15:20:05.718Z | 343.461° N | 2026-09-11 15:24:05.718Z | 40.145° NE | 49.169° | 2026-09-11 15:30:05.718Z | 128.095° SE |
| 7 mins | 2026-09-11 17:07:05.718Z | 292.969° NW | 2026-09-11 17:10:05.718Z | 253.045° W | 26.391° | 2026-09-11 17:14:05.718Z | 202.427° SSW |
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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