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: 23 hours ago
TLE from 23 hours ago
0 COSMOS 81
1 01571U 65070B 25257.29067394 -.00000080 00000-0 99601-4 0 9991
2 01571 56.0580 224.4044 0089855 77.7469 63.8639 12.48863337738159Epoch: 2025-09-14T06:58Z
TLE epoch observation values (Epoch: 2025-09-14T06:58:34.228Z)
Latitude
30.38178°
Longitude
-76.86864°
Altitude
1,440.722 km
Speed
7.159 km/s
True Right ascension
01h 25m 08s
True Declination
30° 14' 42"
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
23:00:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,539.587 km
Perigee altitude
1,398.565 km
Semi-major axis
7,847.213 km
Eccentricity
0.00899
Inclination
56.058°
RAAN
224.4044°
Arg. of periapsis
77.7469°
True anomaly
64.79283°
Mean anomaly
63.8639°
Eccentric anomaly
64.32791°
Mean motion
3.12227 °/min
Orbital period
115.3 mins
BSTAR
0.000099601
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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. |
|---|---|---|---|---|---|---|---|
| 16 mins | 2025-09-15 07:45:14.772Z | 314.306° NW | 2025-09-15 07:53:14.772Z | 143.86° SSE | 44.897° | 2025-09-15 08:01:14.772Z | 137.452° SSE |
| 11 mins | 2025-09-15 09:47:14.772Z | 285.261° WNW | 2025-09-15 09:52:14.772Z | 245.731° WSW | 21.119° | 2025-09-15 09:58:14.772Z | 199.437° SSW |
| 13 mins | 2025-09-15 22:41:14.772Z | 174.08° S | 2025-09-15 22:47:14.772Z | 117.252° SE | 29.387° | 2025-09-15 22:54:14.772Z | 60.659° ENE |
| 15 mins | 2025-09-16 00:40:14.772Z | 239.249° WSW | 2025-09-16 00:47:14.772Z | 332.293° NNW | 42.876° | 2025-09-16 00:55:14.772Z | 42.839° NE |
| 12 mins | 2025-09-16 02:43:14.772Z | 292.831° NW | 2025-09-16 02:49:14.772Z | 348.605° N | 26.863° | 2025-09-16 02:55:14.772Z | 39.683° NE |
| 13 mins | 2025-09-16 04:46:14.772Z | 321.433° NNW | 2025-09-16 04:52:14.772Z | 15.25° NNE | 26.074° | 2025-09-16 04:59:14.772Z | 70.877° E |
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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