NADEZHDA 2, 20508
Orbit data source: Space-Track
NADEZHDA 2, 20508 is a Commonwealth of Independent States-origin payload satellite in LEO that was launched on Tue, 27 Feb 1990 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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20508 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Polyot
Mission
Non-operational Civil Navigation
Bus & Motor
KAUR-1 17F118, Unknown motor
Mass
825 kg wet, 825 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 2.5 m
Radar Cross Section
9.978 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 NADEZHDA 2
1 20508U 90017A 26171.19273814 .00000051 00000-0 36971-4 0 9990
2 20508 82.9561 71.7837 0045396 71.7515 37.6340 13.74557467820792Epoch: 2026-06-20T04:37Z
TLE epoch observation values (Epoch: 2026-06-20T04:37:32.575Z)
Latitude
69.19797°
Longitude
-104.89078°
Altitude
968.816 km
Speed
7.387 km/s
True Right ascension
15h 31m 37s
True Declination
69° 05' 13"
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
23:07:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,013.808 km
Perigee altitude
946.998 km
Semi-major axis
7,358.54 km
Eccentricity
0.00454
Inclination
82.9561°
RAAN
71.7837°
Arg. of periapsis
71.7515°
True anomaly
37.95307°
Mean anomaly
37.634°
Eccentric anomaly
37.79339°
Mean motion
3.43839 °/min
Orbital period
104.7 mins
BSTAR
0.000036971
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Other satellites on launch #17 in the year 1990 (1990-02-27 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.NADEZHDA 2 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-06-22 17:20:31.727Z | 161.727° S | 2026-06-22 17:26:31.727Z | 77.126° E | 36.012° | 2026-06-22 17:31:31.727Z | 19.896° NNE |
| 8 mins | 2026-06-22 19:08:31.727Z | 246.755° WSW | 2026-06-22 19:11:31.727Z | 283.361° WNW | 22.065° | 2026-06-22 19:16:31.727Z | 339.96° N |
| 9 mins | 2026-06-23 04:19:31.727Z | 18.411° NNE | 2026-06-23 04:23:31.727Z | 79.114° E | 32.094° | 2026-06-23 04:28:31.727Z | 141.461° SSE |
| 8 mins | 2026-06-23 06:05:31.727Z | 317.78° NNW | 2026-06-23 06:08:31.727Z | 277.226° WNW | 26.35° | 2026-06-23 06:13:31.727Z | 218.001° SW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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