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: 9 hours ago
TLE from 9 hours ago
0 COSMOS 256
1 3576U 68106A 25326.69261590 .00000285 00000-0 78880-3 0 9997
2 3576 74.0512 40.7217 0032742 84.7218 28.4325 13.16875245738511Epoch: 2025-11-22T16:37Z
TLE epoch observation values (Epoch: 2025-11-22T16:37:22.013Z)
Latitude
62.0883°
Longitude
-122.99949°
Altitude
1,185.159 km
Speed
7.277 km/s
True Right ascension
12h 33m 02s
True Declination
61° 57' 14"
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
22:25:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,219.23 km
Perigee altitude
1,169.641 km
Semi-major axis
7,572.572 km
Eccentricity
0.00327
Inclination
74.0512°
RAAN
40.7217°
Arg. of periapsis
84.7218°
True anomaly
28.61178°
Mean anomaly
28.4325°
Eccentric anomaly
28.52208°
Mean motion
3.29365 °/min
Orbital period
109.3 mins
BSTAR
0.0007888
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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 | 2025-11-23 04:55:08.270Z | 143.173° SSE | 2025-11-23 05:00:08.270Z | 99.267° ESE | 21.588° | 2025-11-23 05:05:08.270Z | 50.451° ENE |
| 12 mins | 2025-11-23 06:46:08.270Z | 216.247° SW | 2025-11-23 06:51:08.270Z | 281.24° WNW | 41.308° | 2025-11-23 06:58:08.270Z | 11.934° NNE |
| 7 mins | 2025-11-23 14:31:08.270Z | 22.224° NNE | 2025-11-23 14:34:08.270Z | 49.733° ENE | 16.336° | 2025-11-23 14:38:08.270Z | 85.278° E |
| 13 mins | 2025-11-23 16:21:08.270Z | 342.557° N | 2025-11-23 16:27:08.270Z | 125.233° SE | 44.771° | 2025-11-23 16:34:08.270Z | 161.051° S |
| 6 mins | 2025-11-23 18:15:08.270Z | 289.027° WNW | 2025-11-23 18:17:08.270Z | 270.916° WNW | 15.031° | 2025-11-23 18:21:08.270Z | 236.782° 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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