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 days ago
TLE from 4 days ago
0 COSMOS 256
1 03576U 68106A 26155.01220068 -.00000114 00000-0 -24780-3 0 9992
2 03576 74.0476 110.9510 0032989 117.1245 310.2139 13.16883275763964Epoch: 2026-06-04T00:17Z
TLE epoch observation values (Epoch: 2026-06-04T00:17:34.138Z)
Latitude
62.3952°
Longitude
-112.95495°
Altitude
1,190.898 km
Speed
7.272 km/s
True Right ascension
09h 35m 35s
True Declination
62° 15' 43"
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
03:39:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,219.386 km
Perigee altitude
1,169.424 km
Semi-major axis
7,572.542 km
Eccentricity
0.0033
Inclination
74.0476°
RAAN
110.951°
Arg. of periapsis
117.1245°
True anomaly
309.92446°
Mean anomaly
310.2139°
Eccentric anomaly
310.06925°
Mean motion
3.29367 °/min
Orbital period
109.3 mins
BSTAR
-0.0002478
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-06-07 21:01:59.283Z | 169.363° S | 2026-06-07 21:07:59.283Z | 103.997° ESE | 36.205° | 2026-06-07 21:14:59.283Z | 30.563° NE |
| 11 mins | 2026-06-07 22:54:59.283Z | 245.943° WSW | 2026-06-07 22:59:59.283Z | 303.276° NW | 28.764° | 2026-06-07 23:05:59.283Z | 1.454° NNE |
| 11 mins | 2026-06-08 06:37:59.283Z | 5.431° NNE | 2026-06-08 06:42:59.283Z | 59.064° ENE | 27.317° | 2026-06-08 06:48:59.283Z | 118.311° SE |
| 12 mins | 2026-06-08 08:28:59.283Z | 327.471° NNW | 2026-06-08 08:34:59.283Z | 251.72° W | 37.471° | 2026-06-08 08:40:59.283Z | 187.539° 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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