COSMOS 1842, 17911
Orbit data source: Space-Track
COSMOS 1842, 17911 is a payload satellite owned by GRU (CIS) in LEO that was launched on Mon, 27 Apr 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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17911 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Yuzhnoe
Mission
Defense Sigint
Bus & Motor
TSELINA-D, Unknown motor
Mass
1,750 kg wet, 1,750 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cone + 2 Pan, 6.8 m
Radar Cross Section
2.839 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 COSMOS 1842
1 17911U 87038A 26295.74855616 .00048699 00000-0 49810-3 0 9992
2 17911 82.5034 40.0335 0003669 177.8557 182.2718 15.64809813160676Epoch: 2026-10-22T17:57Z
TLE epoch observation values (Epoch: 2026-10-22T17:57:55.252Z)
Latitude
-0.00006°
Longitude
99.37428°
Altitude
379.41 km
Speed
7.681 km/s
True Right ascension
02h 40m 08s
True Declination
0° 00' 00"
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
05:05:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
373.172 km
Perigee altitude
368.22 km
Semi-major axis
6,748.833 km
Eccentricity
0.00037
Inclination
82.5034°
RAAN
40.0335°
Arg. of periapsis
177.8557°
True anomaly
182.27013°
Mean anomaly
182.2718°
Eccentric anomaly
182.27097°
Mean motion
3.91471 °/min
Orbital period
91.96 mins
BSTAR
0.0004981
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Other satellites on launch #38 in the year 1987 (1987-04-27 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 1842 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-10-23 19:04:38.808Z | 347.707° N | 2026-10-23 19:06:38.808Z | 318.699° NNW | 63.418° | 2026-10-23 19:09:38.808Z | 179.192° S |
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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