COSMOS 1637, 15619
Orbit data source: Space-Track
COSMOS 1637, 15619 is a payload satellite owned by GUKOS (CIS) in LEO that was launched on Thu, 21 Mar 1985 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.
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15619 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
NPO PM
Mission
Spacecraft
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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 20 hours ago
TLE from 20 hours ago
0 COSMOS 1637
1 15619U 85023C 25348.78119209 .00000001 00000-0 11075-3 0 9997
2 15619 74.0564 352.8599 0015556 210.8834 322.5052 12.47240670854783Epoch: 2025-12-14T18:44Z
TLE epoch observation values (Epoch: 2025-12-14T18:44:54.996Z)
Latitude
6.39555°
Longitude
166.11555°
Altitude
1,468.148 km
Speed
7.134 km/s
True Right ascension
11h 24m 08s
True Declination
6° 21' 40"
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
13:22:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,486.109 km
Perigee altitude
1,461.679 km
Semi-major axis
7,852.031 km
Eccentricity
0.00156
Inclination
74.0564°
RAAN
352.8599°
Arg. of periapsis
210.8834°
True anomaly
322.39653°
Mean anomaly
322.5052°
Eccentric anomaly
322.45088°
Mean motion
3.11939 °/min
Orbital period
115.41 mins
BSTAR
0.00011075
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Other satellites on launch #23 in the year 1985 (1985-03-21 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 1637 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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2025-12-16 00:42:19.035Z | 167.765° S | 2025-12-16 00:50:19.035Z | 91.55° ESE | 36.169° | 2025-12-16 00:57:19.035Z | 31.923° NE |
| 14 mins | 2025-12-16 02:41:19.035Z | 237.855° WSW | 2025-12-16 02:47:19.035Z | 292.082° WNW | 32.562° | 2025-12-16 02:55:19.035Z | 5.012° NNE |
| 14 mins | 2025-12-16 10:51:19.035Z | 354.918° N | 2025-12-16 10:58:19.035Z | 72.507° E | 37.415° | 2025-12-16 11:05:19.035Z | 135.717° SSE |
| 13 mins | 2025-12-16 12:49:19.035Z | 319.259° NNW | 2025-12-16 12:55:19.035Z | 264.756° W | 30.483° | 2025-12-16 13:02:19.035Z | 204.06° SW |
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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