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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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Identifier
3576, 1968-106A
Orbit
LEO
Last TLE update
10 hours ago
Origin
Manufacturer
OKB-10
Mission
Defense Geodetic
Bus & Motor
KAUR-1 11F621, Unknown motor
Mass
800 kg wet, 800 kg dry
Launch date (UTC)
1968-11-30 (57 years ago)
Launch vehicle
KOSMOS 11K65M
Launch site
Plesetsk Missile And Space Complex (PKMTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Sphere + 2 Pan, 17 m
Radar Cross Section
2.011 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 10 hours ago
0 COSMOS 256
1 03576U 68106A   25189.89298809  .00000047  00000-0  17081-3 0  9991
2 03576  74.0476 245.7695 0034248 316.7651 217.1265 13.16869776720501
Epoch: 2025-07-08T21:25Z
TLE epoch observation values (Epoch: 2025-07-08T21:25:54.17Z)
Latitude
6.02985°
Longitude
175.49082°
Altitude
1,219.306 km
Speed
7.235 km/s
True Right ascension
04h 16m 11s
True Declination
5° 59' 46"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
6.48511°
Longitude
-1.56514°
Altitude
1,182.095 km
Speed
7.271 km/s
Apparent Right ascension
13h 45m 12s
Apparent Declination
-29° 53' 44"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
19:40:53
Azimuth
245.624° WSW
Elevation
-17.897°
Doppler factor
1
Orbital elements
Apogee altitude
1,220.391 km
Perigee altitude
1,168.522 km
Semi-major axis
7,572.594 km
Eccentricity
0.00342
Inclination
74.0476°
RAAN
245.7695°
Arg. of periapsis
316.7651°
True anomaly
Unknown
Mean anomaly
217.1265°
Eccentric anomaly
Unknown
Mean motion
3.29364 °/min
Orbital period
109.3 mins
BSTAR
0.00017081
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Other satellites on launch #106 in the year 1968 (1968-11-30 UTC)

COSMOS 256 Visibility forecast

Observer location: undefined°, undefined°

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.
11 mins2025-07-09 13:31:22.777Z4.798° NNE2025-07-09 13:37:22.777Z59.29° ENE21.839°2025-07-09 13:42:22.777Z103.701° ESE
13 mins2025-07-09 15:23:22.777Z335.076° NNW2025-07-09 15:29:22.777Z245.123° WSW43.476°2025-07-09 15:36:22.777Z172.956° S
10 mins2025-07-10 03:40:22.777Z140.345° SSE2025-07-10 03:44:22.777Z96.398° ESE25.775°2025-07-10 03:50:22.777Z40.735° NE
12 mins2025-07-10 05:30:22.777Z225.143° WSW2025-07-10 05:35:22.777Z291.506° WNW38.322°2025-07-10 05:42:22.777Z9.481° NNE
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