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: 21 hours ago
TLE from 21 hours ago
0 COSMOS 81
1 01571U 65070B 26065.40742051 -.00000065 00000-0 19799-3 0 9994
2 01571 56.0593 118.2066 0086180 311.1918 61.1656 12.48867031759786Epoch: 2026-03-06T09:46Z
TLE epoch observation values (Epoch: 2026-03-06T09:46:41.132Z)
Latitude
10.92758°
Longitude
174.82024°
Altitude
1,437.379 km
Speed
7.159 km/s
True Right ascension
08h 22m 32s
True Declination
10° 52' 10"
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
10:18:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,536.688 km
Perigee altitude
1,401.433 km
Semi-major axis
7,847.197 km
Eccentricity
0.00862
Inclination
56.0593°
RAAN
118.2066°
Arg. of periapsis
311.1918°
True anomaly
62.03519°
Mean anomaly
61.1656°
Eccentric anomaly
61.59995°
Mean motion
3.12228 °/min
Orbital period
115.3 mins
BSTAR
0.00019799
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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 | 2026-03-07 07:02:18.668Z | 254.168° W | 2026-03-07 07:10:18.668Z | 334.964° NNW | 38.049° | 2026-03-07 07:18:18.668Z | 41.209° NE |
| 14 mins | 2026-03-07 09:06:18.668Z | 301.434° NW | 2026-03-07 09:12:18.668Z | 349.887° N | 26.048° | 2026-03-07 09:20:18.668Z | 51.002° ENE |
| 15 mins | 2026-03-07 11:09:18.668Z | 322.903° NNW | 2026-03-07 11:16:18.668Z | 26.287° NE | 30.796° | 2026-03-07 11:24:18.668Z | 86.407° E |
| 16 mins | 2026-03-07 13:10:18.668Z | 315.452° NNW | 2026-03-07 13:17:18.668Z | 348.358° N | 44.807° | 2026-03-07 13:26:18.668Z | 134.754° SE |
| 13 mins | 2026-03-07 15:11:18.668Z | 289.763° WNW | 2026-03-07 15:17:18.668Z | 243.7° WSW | 23.942° | 2026-03-07 15:24:18.668Z | 192.478° SSW |
| 13 mins | 2026-03-08 04:05:18.668Z | 170.381° S | 2026-03-08 04:11:18.668Z | 115.98° SE | 28.069° | 2026-03-08 04:18:18.668Z | 61.955° ENE |
| 16 mins | 2026-03-08 06:03:18.668Z | 234.621° WSW | 2026-03-08 06:11:18.668Z | 338.065° N | 43.683° | 2026-03-08 06:19:18.668Z | 43.192° NE |
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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