COSMOS 1636, 15618
Orbit data source: Space-Track
COSMOS 1636, 15618 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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15618 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: 22 hours ago
TLE from 22 hours ago
0 COSMOS 1636
1 15618U 85023B 25348.69460627 -.00000022 00000-0 -41962-4 0 9993
2 15618 74.0567 62.0580 0013202 331.6722 147.2952 12.45354689851905Epoch: 2025-12-14T16:40Z
TLE epoch observation values (Epoch: 2025-12-14T16:40:13.981Z)
Latitude
57.29888°
Longitude
-117.8861°
Altitude
1,501.953 km
Speed
7.115 km/s
True Right ascension
14h 23m 06s
True Declination
57° 09' 26"
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
1,492.201 km
Perigee altitude
1,471.447 km
Semi-major axis
7,859.961 km
Eccentricity
0.00132
Inclination
74.0567°
RAAN
62.058°
Arg. of periapsis
331.6722°
True anomaly
147.37683°
Mean anomaly
147.2952°
Eccentric anomaly
147.33602°
Mean motion
3.11467 °/min
Orbital period
115.58 mins
BSTAR
-0.000041962
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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 1636 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 | 2025-12-15 15:45:19.192Z | 348.125° N | 2025-12-15 15:53:19.192Z | 58.645° ENE | 40.424° | 2025-12-15 16:01:19.192Z | 142.885° SSE |
| 13 mins | 2025-12-15 17:45:19.192Z | 314.972° NW | 2025-12-15 17:51:19.192Z | 262.113° W | 27.008° | 2025-12-15 17:58:19.192Z | 208.666° SW |
| 12 mins | 2025-12-16 04:46:19.192Z | 144.084° SSE | 2025-12-16 04:52:19.192Z | 92.199° ESE | 26.296° | 2025-12-16 04:58:19.192Z | 43.017° NE |
| 15 mins | 2025-12-16 06:42:19.192Z | 217.135° SW | 2025-12-16 06:49:19.192Z | 287.491° WNW | 40.815° | 2025-12-16 06:57:19.192Z | 11.269° NNE |
| 6 mins | 2025-12-16 08:47:19.192Z | 300.294° NW | 2025-12-16 08:49:19.192Z | 314.708° NW | 13.298° | 2025-12-16 08:53:19.192Z | 343.02° N |
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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