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
Defense Communications
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
Poly, 0.4 m
Radar Cross Section
0.731 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 COSMOS 81
1 01571U 65070B 25261.29476477 -.00000104 00000-0 -52488-4 0 9992
2 01571 56.0586 213.6212 0089902 83.0058 66.0109 12.48863384738653Epoch: 2025-09-18T07:04Z
TLE epoch observation values (Epoch: 2025-09-18T07:04:27.676Z)
Latitude
24.59131°
Longitude
-87.80051°
Altitude
1,442.258 km
Speed
7.156 km/s
True Right ascension
01h 03m 05s
True Declination
24° 28' 22"
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
05:12:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,539.624 km
Perigee altitude
1,398.528 km
Semi-major axis
7,847.213 km
Eccentricity
0.00899
Inclination
56.0586°
RAAN
213.6212°
Arg. of periapsis
83.0058°
True anomaly
66.95639°
Mean anomaly
66.0109°
Eccentric anomaly
66.48322°
Mean motion
3.12227 °/min
Orbital period
115.3 mins
BSTAR
-0.000052488
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2025-09-18 21:45:21.061Z | 171.452° S | 2025-09-18 21:51:21.061Z | 122.481° SE | 26.271° | 2025-09-18 21:58:21.061Z | 64.52° ENE |
| 15 mins | 2025-09-18 23:44:21.061Z | 232.91° WSW | 2025-09-18 23:51:21.061Z | 312.001° NW | 44.149° | 2025-09-18 23:59:21.061Z | 43.375° NE |
| 13 mins | 2025-09-19 01:47:21.061Z | 287.95° WNW | 2025-09-19 01:53:21.061Z | 343.762° N | 27.976° | 2025-09-19 02:00:21.061Z | 41.843° NE |
| 13 mins | 2025-09-19 03:50:21.061Z | 318.617° NNW | 2025-09-19 03:56:21.061Z | 10.613° NNE | 25.347° | 2025-09-19 04:03:21.061Z | 66.73° ENE |
| 15 mins | 2025-09-19 05:51:21.061Z | 320.64° NNW | 2025-09-19 05:58:21.061Z | 28.856° NE | 39.688° | 2025-09-19 06:06:21.061Z | 112.074° ESE |
| 14 mins | 2025-09-19 07:52:21.061Z | 301.069° NW | 2025-09-19 07:59:21.061Z | 229.104° WSW | 35.561° | 2025-09-19 08:06:21.061Z | 168.809° S |
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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