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: 7 hours ago
TLE from 7 hours ago
0 COSMOS 256
1 3576U 68106A 25312.72839359 .00000253 00000-0 70613-3 0 9991
2 3576 74.0501 61.6504 0032833 109.0511 66.9438 13.16874582736678Epoch: 2025-11-08T17:28Z
TLE epoch observation values (Epoch: 2025-11-08T17:28:53.206Z)
Latitude
3.43267°
Longitude
-69.70243°
Altitude
1,189.095 km
Speed
7.264 km/s
True Right ascension
16h 02m 41s
True Declination
3° 24' 48"
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
20:35:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,219.301 km
Perigee altitude
1,169.575 km
Semi-major axis
7,572.575 km
Eccentricity
0.00328
Inclination
74.0501°
RAAN
61.6504°
Arg. of periapsis
109.0511°
True anomaly
67.29054°
Mean anomaly
66.9438°
Eccentric anomaly
67.11711°
Mean motion
3.29365 °/min
Orbital period
109.3 mins
BSTAR
0.00070613
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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 | 2025-11-09 07:17:35.908Z | 141.458° SSE | 2025-11-09 07:22:35.908Z | 92.608° ESE | 22.993° | 2025-11-09 07:27:35.908Z | 46.239° ENE |
| 12 mins | 2025-11-09 09:07:35.908Z | 217.445° SW | 2025-11-09 09:13:35.908Z | 301.62° NW | 40.418° | 2025-11-09 09:19:35.908Z | 9.843° NNE |
| 8 mins | 2025-11-09 16:52:35.908Z | 18.026° NNE | 2025-11-09 16:56:35.908Z | 55.126° ENE | 17.055° | 2025-11-09 17:00:35.908Z | 90.098° ESE |
| 13 mins | 2025-11-09 18:42:35.908Z | 341.063° N | 2025-11-09 18:48:35.908Z | 342.028° N | 44.942° | 2025-11-09 18:55:35.908Z | 163.152° S |
| 5 mins | 2025-11-09 20:37:35.908Z | 283.895° WNW | 2025-11-09 20:39:35.908Z | 265.874° W | 13.836° | 2025-11-09 20:42:35.908Z | 240.895° 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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