COSMOS 1998, 19789
Orbit data source: Space-Track
COSMOS 1998, 19789 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Fri, 10 Feb 1989 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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19789 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, 0.9 m
Radar Cross Section
1.257 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 1998
1 19789U 89009E 26262.75059366 .00000020 00000-0 48450-4 0 9996
2 19789 82.6061 271.1238 0017159 67.4499 292.8408 12.64935531735978Epoch: 2026-09-19T18:00Z
TLE epoch observation values (Epoch: 2026-09-19T18:00:51.292Z)
Latitude
0.00003°
Longitude
2.25544°
Altitude
1,400.209 km
Speed
7.162 km/s
True Right ascension
18h 04m 29s
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
18:23:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,413.301 km
Perigee altitude
1,386.609 km
Semi-major axis
7,778.092 km
Eccentricity
0.00172
Inclination
82.6061°
RAAN
271.1238°
Arg. of periapsis
67.4499°
True anomaly
292.65944°
Mean anomaly
292.8408°
Eccentric anomaly
292.75013°
Mean motion
3.16398 °/min
Orbital period
113.78 mins
BSTAR
0.00004845
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Other satellites on launch #9 in the year 1989 (1989-02-10 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 1998 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 | 2026-09-20 01:41:25.977Z | 194.431° SSW | 2026-09-20 01:49:25.977Z | 290.191° WNW | 73.018° | 2026-09-20 01:57:25.977Z | 4.042° NNE |
| 5 mins | 2026-09-20 03:43:25.977Z | 283.73° WNW | 2026-09-20 03:45:25.977Z | 299.012° NW | 13.329° | 2026-09-20 03:48:25.977Z | 321.627° NNW |
| 13 mins | 2026-09-20 11:43:25.977Z | 10.484° NNE | 2026-09-20 11:49:25.977Z | 75.503° E | 45.053° | 2026-09-20 11:56:25.977Z | 143.81° SSE |
| 12 mins | 2026-09-20 13:38:25.977Z | 329.299° NNW | 2026-09-20 13:44:25.977Z | 267.073° W | 36.49° | 2026-09-20 13:50:25.977Z | 214.469° SW |
| 13 mins | 2026-09-21 00:29:25.977Z | 152.127° SSE | 2026-09-21 00:35:25.977Z | 93.936° ESE | 44.003° | 2026-09-21 00:42:25.977Z | 22.863° 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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