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, 0.8 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 1998
1 19789U 89009E 26126.15341222 .00000025 00000-0 75309-4 0 9992
2 19789 82.6143 358.3317 0016520 20.1282 340.0459 12.64932637718700Epoch: 2026-05-06T03:40Z
TLE epoch observation values (Epoch: 2026-05-06T03:40:54.815Z)
Latitude
-0.00001°
Longitude
79.08531°
Altitude
1,393.304 km
Speed
7.169 km/s
True Right ascension
23h 53m 19s
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
20:16:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,412.816 km
Perigee altitude
1,387.117 km
Semi-major axis
7,778.103 km
Eccentricity
0.00165
Inclination
82.6143°
RAAN
358.3317°
Arg. of periapsis
20.1282°
True anomaly
339.98117°
Mean anomaly
340.0459°
Eccentric anomaly
340.01355°
Mean motion
3.16397 °/min
Orbital period
113.78 mins
BSTAR
0.000075309
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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. |
|---|---|---|---|---|---|---|---|
| 14 mins | 2026-05-06 15:10:06.041Z | 147.541° SSE | 2026-05-06 15:17:06.041Z | 83.067° E | 31.134° | 2026-05-06 15:24:06.041Z | 23.612° NE |
| 14 mins | 2026-05-06 17:05:06.041Z | 219.169° SW | 2026-05-06 17:11:06.041Z | 278.318° WNW | 34.714° | 2026-05-06 17:19:06.041Z | 355.271° N |
| 6 mins | 2026-05-07 01:13:06.041Z | 43.021° NE | 2026-05-07 01:15:06.041Z | 58.319° ENE | 13.434° | 2026-05-07 01:19:06.041Z | 87.95° E |
| 14 mins | 2026-05-07 03:05:06.041Z | 357.689° N | 2026-05-07 03:12:06.041Z | 108.223° ESE | 43.725° | 2026-05-07 03:19:06.041Z | 165.95° S |
| 10 mins | 2026-05-07 05:01:06.041Z | 316.392° NNW | 2026-05-07 05:05:06.041Z | 283.447° WNW | 19.804° | 2026-05-07 05:11:06.041Z | 236.09° WSW |
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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