COSMOS 81, 1571
Orbit data source: Space-Track
COSMOS 81, 1571 is a payload satellite owned by OKB-10 (CIS) in LEO that was launched on Fri, 03 Sep 1965 UTC via a KOSMOS 65S3 launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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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1571 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
OKB-10
Mission
Spacecraft
Bus & Motor
STRELA-1 11F610, Unknown motor
Mass
50 kg wet, 50 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 COSMOS 81
1 1571U 65070B 25325.48057284 -.00000091 00000-0 30589-4 0 9997
2 1571 56.0623 40.7674 0088357 167.9006 281.0845 12.48864878746670Epoch: 2025-11-21T11:32Z
TLE epoch observation values (Epoch: 2025-11-21T11:32:01.493Z)
Latitude
56.14048°
Longitude
-106.56406°
Altitude
1,464.15 km
Speed
7.142 km/s
True Right ascension
08h 28m 39s
True Declination
55° 59' 44"
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
21:30:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,538.405 km
Perigee altitude
1,399.733 km
Semi-major axis
7,847.206 km
Eccentricity
0.00884
Inclination
56.0623°
RAAN
40.7674°
Arg. of periapsis
167.9006°
True anomaly
280.08883°
Mean anomaly
281.0845°
Eccentric anomaly
280.58687°
Mean motion
3.12227 °/min
Orbital period
115.3 mins
BSTAR
0.000030589
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Other satellites on launch #70 in the year 1965 (1965-09-03 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 81 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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2025-11-22 06:22:17.728Z | 186.469° SSW | 2025-11-22 06:30:17.728Z | 115.068° SE | 33.731° | 2025-11-22 06:37:17.728Z | 58.4° ENE |
| 16 mins | 2025-11-22 08:22:17.728Z | 243.732° WSW | 2025-11-22 08:30:17.728Z | 327.896° NNW | 41.491° | 2025-11-22 08:38:17.728Z | 41.549° NE |
| 13 mins | 2025-11-22 10:26:17.728Z | 295.296° NW | 2025-11-22 10:32:17.728Z | 346.172° N | 26.742° | 2025-11-22 10:39:17.728Z | 43.74° NE |
| 13 mins | 2025-11-22 12:29:17.728Z | 320.861° NNW | 2025-11-22 12:35:17.728Z | 11.482° NNE | 27.522° | 2025-11-22 12:42:17.728Z | 72.459° E |
| 15 mins | 2025-11-22 14:30:17.728Z | 318.459° NNW | 2025-11-22 14:37:17.728Z | 25.157° NE | 43.11° | 2025-11-22 14:45:17.728Z | 123.261° SE |
| 13 mins | 2025-11-22 16:31:17.728Z | 295.096° NW | 2025-11-22 16:37:17.728Z | 243.246° WSW | 28.762° | 2025-11-22 16:44:17.728Z | 182.352° SSW |
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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