COSMOS 1831, 17586
Orbit data source: Space-Track
COSMOS 1831, 17586 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Fri, 13 Mar 1987 UTC via a TSIKLON-3 launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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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17586 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 0.8 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 COSMOS 1831
1 17586U 87026E 26142.38234812 .00000000 00000-0 -57179-4 0 9990
2 17586 82.5602 187.3592 0015532 178.7795 192.2947 12.65547175810171Epoch: 2026-05-22T09:10Z
TLE epoch observation values (Epoch: 2026-05-22T09:10:34.877Z)
Latitude
10.89608°
Longitude
171.13318°
Altitude
1,413.925 km
Speed
7.149 km/s
True Right ascension
12h 35m 10s
True Declination
10° 50' 16"
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
15:11:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,409.526 km
Perigee altitude
1,385.372 km
Semi-major axis
7,775.586 km
Eccentricity
0.00155
Inclination
82.5602°
RAAN
187.3592°
Arg. of periapsis
178.7795°
True anomaly
192.25687°
Mean anomaly
192.2947°
Eccentric anomaly
192.27578°
Mean motion
3.16551 °/min
Orbital period
113.73 mins
BSTAR
-0.000057179
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Other satellites on launch #26 in the year 1987 (1987-03-13 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 1831 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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2026-05-23 14:11:48.798Z | 4.286° NNE | 2026-05-23 14:18:48.798Z | 84.63° E | 38.834° | 2026-05-23 14:25:48.798Z | 151.901° SSE |
| 11 mins | 2026-05-23 16:07:48.798Z | 323.359° NNW | 2026-05-23 16:12:48.798Z | 275.357° WNW | 26.68° | 2026-05-23 16:18:48.798Z | 222.739° SW |
| 14 mins | 2026-05-24 02:57:48.798Z | 159.634° S | 2026-05-24 03:03:48.798Z | 100.549° ESE | 38.388° | 2026-05-24 03:11:48.798Z | 17.805° NNE |
| 12 mins | 2026-05-24 04:53:48.798Z | 236.995° WSW | 2026-05-24 04:58:48.798Z | 283.387° WNW | 27.725° | 2026-05-24 05:05:48.798Z | 346.984° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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