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 26317.24694356 .00000036 00000-0 13798-3 0 9998
2 19789 82.6123 236.3239 0015282 304.7691 55.1963 12.64936436742864Epoch: 2026-11-13T05:55Z
TLE epoch observation values (Epoch: 2026-11-13T05:55:35.923Z)
Latitude
0.00001°
Longitude
95.0554°
Altitude
1,398.594 km
Speed
7.164 km/s
True Right ascension
15h 45m 17s
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
09:53:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,411.837 km
Perigee altitude
1,388.065 km
Semi-major axis
7,778.088 km
Eccentricity
0.00153
Inclination
82.6123°
RAAN
236.3239°
Arg. of periapsis
304.7691°
True anomaly
55.34025°
Mean anomaly
55.1963°
Eccentric anomaly
55.26826°
Mean motion
3.16398 °/min
Orbital period
113.78 mins
BSTAR
0.00013798
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-11-13 17:29:00.892Z | 98.884° ESE | 2026-11-13 17:32:00.892Z | 77.044° E | 13.021° | 2026-11-13 17:35:00.892Z | 54.826° ENE |
| 14 mins | 2026-11-13 19:19:00.892Z | 177.267° S | 2026-11-13 19:25:00.892Z | 127.903° SE | 75.18° | 2026-11-13 19:33:00.892Z | 10.82° NNE |
| 10 mins | 2026-11-13 21:17:00.892Z | 258.71° W | 2026-11-13 21:21:00.892Z | 292.958° NW | 21.37° | 2026-11-13 21:27:00.892Z | 340.393° N |
| 12 mins | 2026-11-14 05:20:00.892Z | 19.148° NNE | 2026-11-14 05:25:00.892Z | 64.302° ENE | 30.384° | 2026-11-14 05:32:00.892Z | 126.686° SE |
| 14 mins | 2026-11-14 07:14:00.892Z | 340.919° N | 2026-11-14 07:21:00.892Z | 259.553° W | 55.161° | 2026-11-14 07:28:00.892Z | 196.189° SSW |
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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