COSMOS 1879, 18338
Orbit data source: Space-Track
COSMOS 1879, 18338 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Mon, 07 Sep 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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18338 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: 9 hours ago
TLE from 9 hours ago
0 COSMOS 1879
1 18338U 87074E 26061.77321628 .00000005 00000-0 -28856-4 0 9999
2 18338 82.5764 351.5020 0007405 84.8314 333.1785 12.65025165776606Epoch: 2026-03-02T18:33Z
TLE epoch observation values (Epoch: 2026-03-02T18:33:25.886Z)
Latitude
57.30266°
Longitude
-75.76524°
Altitude
1,406.696 km
Speed
7.165 km/s
True Right ascension
00h 12m 37s
True Declination
57° 09' 33"
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
07:10:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,405.348 km
Perigee altitude
1,393.829 km
Semi-major axis
7,777.725 km
Eccentricity
0.00074
Inclination
82.5764°
RAAN
351.502°
Arg. of periapsis
84.8314°
True anomaly
333.14018°
Mean anomaly
333.1785°
Eccentric anomaly
333.15934°
Mean motion
3.1642 °/min
Orbital period
113.77 mins
BSTAR
-0.000028856
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Other satellites on launch #74 in the year 1987 (1987-09-07 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 1879 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 | 2026-03-03 06:14:27.258Z | 5.426° NNE | 2026-03-03 06:22:27.258Z | 83.551° E | 34.237° | 2026-03-03 06:29:27.258Z | 143.815° SSE |
| 13 mins | 2026-03-03 08:10:27.258Z | 332.521° NNW | 2026-03-03 08:16:27.258Z | 275.085° WNW | 31.741° | 2026-03-03 08:23:27.258Z | 211.291° SW |
| 13 mins | 2026-03-03 19:02:27.258Z | 148.414° SSE | 2026-03-03 19:08:27.258Z | 84.816° E | 33.901° | 2026-03-03 19:15:27.258Z | 22.148° NNE |
| 14 mins | 2026-03-03 20:56:27.258Z | 223.186° SW | 2026-03-03 21:03:27.258Z | 293.203° NW | 32.19° | 2026-03-03 21:10:27.258Z | 353.061° 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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