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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Edit Public Description
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: 12 hours ago
TLE from 12 hours ago
0 COSMOS 256
1 03576U 68106A 25340.59418021 .00000303 00000-0 83476-3 0 9993
2 03576 74.0505 19.8854 0032788 60.4118 52.9915 13.16875965740347Epoch: 2025-12-06T14:15Z
TLE epoch observation values (Epoch: 2025-12-06T14:15:37.170Z)
Latitude
61.78693°
Longitude
-121.64507°
Altitude
1,191.988 km
Speed
7.271 km/s
True Right ascension
11h 11m 31s
True Declination
61° 39' 06"
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
00:13:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,219.262 km
Perigee altitude
1,169.604 km
Semi-major axis
7,572.57 km
Eccentricity
0.00328
Inclination
74.0505°
RAAN
19.8854°
Arg. of periapsis
60.4118°
True anomaly
53.29227°
Mean anomaly
52.9915°
Eccentric anomaly
53.14181°
Mean motion
3.29366 °/min
Orbital period
109.3 mins
BSTAR
0.00083476
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2025-12-07 02:33:29.282Z | 140.165° SSE | 2025-12-07 02:38:29.282Z | 95.873° ESE | 20.388° | 2025-12-07 02:43:29.282Z | 49.61° ENE |
| 13 mins | 2025-12-07 04:23:29.282Z | 211.912° SW | 2025-12-07 04:29:29.282Z | 292.512° NW | 42.291° | 2025-12-07 04:36:29.282Z | 13.425° NNE |
| 7 mins | 2025-12-07 12:09:29.282Z | 24.964° NE | 2025-12-07 12:12:29.282Z | 52.357° ENE | 15.636° | 2025-12-07 12:16:29.282Z | 86.146° E |
| 12 mins | 2025-12-07 13:59:29.282Z | 344.208° N | 2025-12-07 14:04:29.282Z | 23.406° NE | 44.315° | 2025-12-07 14:11:29.282Z | 158.432° S |
| 7 mins | 2025-12-07 15:52:29.282Z | 295.675° NW | 2025-12-07 15:55:29.282Z | 268.489° W | 16.25° | 2025-12-07 15:59:29.282Z | 234.031° WSW |
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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