COSMOS 1926, 18939
Orbit data source: Space-Track
COSMOS 1926, 18939 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Fri, 11 Mar 1988 UTC via a KOSMOS 11K65M 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
18939 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-1 11F625, Unknown motor
Mass
60 kg wet, 60 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Sphere, 0.4 m
Radar Cross Section
0.588 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 19 hours ago
TLE from 19 hours ago
0 COSMOS 1926
1 18939U 88016C 25348.82282154 -.00000014 00000-0 96211-5 0 9997
2 18939 74.0040 227.6985 0012004 160.6582 269.3778 12.48854301721627Epoch: 2025-12-14T19:44Z
TLE epoch observation values (Epoch: 2025-12-14T19:44:51.781Z)
Latitude
64.60942°
Longitude
-115.30445°
Altitude
1,480.179 km
Speed
7.129 km/s
True Right ascension
17h 38m 33s
True Declination
64° 29' 18"
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
13:18:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,476.547 km
Perigee altitude
1,457.712 km
Semi-major axis
7,845.266 km
Eccentricity
0.0012
Inclination
74.004°
RAAN
227.6985°
Arg. of periapsis
160.6582°
True anomaly
269.24025°
Mean anomaly
269.3778°
Eccentric anomaly
269.30903°
Mean motion
3.12343 °/min
Orbital period
115.26 mins
BSTAR
0.0000096211
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #16 in the year 1988 (1988-03-11 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 1926 Visibility forecast
Loading observer location...
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 | 2025-12-15 16:36:14.088Z | 174.529° S | 2025-12-15 16:44:14.088Z | 96.934° ESE | 39.29° | 2025-12-15 16:52:14.088Z | 27.836° NE |
| 13 mins | 2025-12-15 18:36:14.088Z | 246.862° WSW | 2025-12-15 18:42:14.088Z | 303.909° NW | 29.569° | 2025-12-15 18:49:14.088Z | 2.615° NNE |
| 5 mins | 2025-12-16 00:49:14.088Z | 25.591° NE | 2025-12-16 00:51:14.088Z | 39.986° NE | 12.653° | 2025-12-16 00:54:14.088Z | 61.453° ENE |
| 15 mins | 2025-12-16 02:44:14.088Z | 350.685° N | 2025-12-16 02:51:14.088Z | 62.185° ENE | 40.111° | 2025-12-16 02:59:14.088Z | 142.678° SSE |
| 12 mins | 2025-12-16 04:43:14.088Z | 312.995° NW | 2025-12-16 04:48:14.088Z | 268.325° W | 27.027° | 2025-12-16 04:55:14.088Z | 209.932° SW |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|