COSMOS 256, 3576
Orbit data source: Space-Track
COSMOS 256, 3576 is a payload satellite owned by OKB-10 (CIS) in LEO that was launched on Sat, 30 Nov 1968 UTC via a KOSMOS 11K65M launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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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3576 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
OKB-10
Mission
Spacecraft
Bus & Motor
KAUR-1 11F621, Unknown motor
Mass
800 kg wet, 800 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: 4 hours ago
TLE from 4 hours ago
0 COSMOS 256
1 3576U 68106A 26068.56468655 .00000212 00000-0 59940-3 0 9994
2 3576 74.0464 240.5247 0034329 263.4328 162.8448 13.16879318752588Epoch: 2026-03-09T13:33Z
TLE epoch observation values (Epoch: 2026-03-09T13:33:08.917Z)
Latitude
61.86321°
Longitude
-97.88674°
Altitude
1,231.749 km
Speed
7.233 km/s
True Right ascension
18h 10m 37s
True Declination
61° 43' 44"
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
21:44:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,220.416 km
Perigee altitude
1,168.424 km
Semi-major axis
7,572.557 km
Eccentricity
0.00343
Inclination
74.0464°
RAAN
240.5247°
Arg. of periapsis
263.4328°
True anomaly
162.96036°
Mean anomaly
162.8448°
Eccentric anomaly
162.90263°
Mean motion
3.29366 °/min
Orbital period
109.3 mins
BSTAR
0.0005994
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Other satellites on launch #106 in the year 1968 (1968-11-30 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 256 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 | 2026-03-09 21:05:22.228Z | 12.862° NNE | 2026-03-09 21:09:22.228Z | 48.901° ENE | 19.496° | 2026-03-09 21:14:22.228Z | 94.865° ESE |
| 13 mins | 2026-03-09 22:56:22.228Z | 338.304° N | 2026-03-09 23:02:22.228Z | 227.758° WSW | 44.592° | 2026-03-09 23:09:22.228Z | 167.709° S |
| 9 mins | 2026-03-10 11:13:22.228Z | 135.417° SSE | 2026-03-10 11:17:22.228Z | 94.783° ESE | 23.147° | 2026-03-10 11:22:22.228Z | 47.725° ENE |
| 13 mins | 2026-03-10 13:02:22.228Z | 216.443° SW | 2026-03-10 13:08:22.228Z | 295.204° NW | 40.902° | 2026-03-10 13:15:22.228Z | 11.789° NNE |
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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