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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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: 6 hours ago
TLE from 6 hours ago
0 COSMOS 81
1 01571U 65070B 26101.22043738 -.00000094 00000-0 11002-4 0 9993
2 01571 56.0631 21.7611 0087826 359.9080 153.1025 12.48867408764259Epoch: 2026-04-11T05:17Z
TLE epoch observation values (Epoch: 2026-04-11T05:17:25.789Z)
Latitude
21.79868°
Longitude
-92.5736°
Altitude
1,531.662 km
Speed
7.075 km/s
True Right ascension
12h 24m 54s
True Declination
21° 41' 31"
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
17:23:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,537.977 km
Perigee altitude
1,400.14 km
Semi-major axis
7,847.195 km
Eccentricity
0.00878
Inclination
56.0631°
RAAN
21.7611°
Arg. of periapsis
359.908°
True anomaly
153.55338°
Mean anomaly
153.1025°
Eccentric anomaly
153.32838°
Mean motion
3.12228 °/min
Orbital period
115.3 mins
BSTAR
0.000011002
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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 | 2026-04-11 19:56:37.308Z | 187.16° SSW | 2026-04-11 20:03:37.308Z | 125.466° SE | 33.597° | 2026-04-11 20:11:37.308Z | 56.621° ENE |
| 16 mins | 2026-04-11 21:56:37.308Z | 245.292° WSW | 2026-04-11 22:03:37.308Z | 311.206° NW | 40.835° | 2026-04-11 22:12:37.308Z | 42.356° NE |
| 13 mins | 2026-04-12 00:00:37.308Z | 298.131° NW | 2026-04-12 00:06:37.308Z | 351.969° N | 26.409° | 2026-04-12 00:13:37.308Z | 46.009° ENE |
| 13 mins | 2026-04-12 02:03:37.308Z | 323.508° NNW | 2026-04-12 02:09:37.308Z | 17.208° NNE | 28.272° | 2026-04-12 02:16:37.308Z | 74.563° E |
| 17 mins | 2026-04-12 04:03:37.308Z | 317.505° NNW | 2026-04-12 04:11:37.308Z | 41.435° NE | 43.618° | 2026-04-12 04:20:37.308Z | 125.67° SE |
| 13 mins | 2026-04-12 06:05:37.308Z | 292.816° NW | 2026-04-12 06:11:37.308Z | 240.166° WSW | 29.393° | 2026-04-12 06:18:37.308Z | 183.342° 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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