COSMOS 2599, 66649
Orbit data source: Space-Track
COSMOS 2599, 66649 is a payload satellite owned by VVKO VKS (CIS) in LEO that was launched on Tue, 25 Nov 2025 UTC via an ANGARA-1.2 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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66649 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Resehetnev ISS
Mission
Operational Defense Communications
Bus & Motor
STRELA-3M, Unknown motor
Mass
280 kg wet, 280 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 1 Ant, 1.1 m
Radar Cross Section
1.583 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 COSMOS 2599
1 66649U 25273C 26171.24558653 .00000003 00000-0 -49518-4 0 9990
2 66649 82.5024 168.7330 0015506 192.3444 167.7258 12.42896838 25673Epoch: 2026-06-20T05:53Z
TLE epoch observation values (Epoch: 2026-06-20T05:53:38.676Z)
Latitude
0°
Longitude
171.85888°
Altitude
1,508.978 km
Speed
7.105 km/s
True Right ascension
11h 14m 55s
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
07:18:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,503.901 km
Perigee altitude
1,479.495 km
Semi-major axis
7,869.835 km
Eccentricity
0.00155
Inclination
82.5024°
RAAN
168.733°
Arg. of periapsis
192.3444°
True anomaly
167.7635°
Mean anomaly
167.7258°
Eccentric anomaly
167.74466°
Mean motion
3.10881 °/min
Orbital period
115.8 mins
BSTAR
-0.000049518
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Other satellites on launch #273 in the year 2025 (2025-11-25 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 2599 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 | 2026-06-20 23:22:41.005Z | 143.286° SSE | 2026-06-20 23:29:41.005Z | 86.58° E | 29.29° | 2026-06-20 23:36:41.005Z | 27.363° NE |
| 15 mins | 2026-06-21 01:19:41.005Z | 214.325° SW | 2026-06-21 01:26:41.005Z | 292.384° WNW | 37.772° | 2026-06-21 01:34:41.005Z | 358.421° N |
| 7 mins | 2026-06-21 09:35:41.005Z | 36.237° NE | 2026-06-21 09:38:41.005Z | 58.543° ENE | 14.878° | 2026-06-21 09:42:41.005Z | 88.116° E |
| 16 mins | 2026-06-21 11:29:41.005Z | 355.346° N | 2026-06-21 11:37:41.005Z | 113.023° SE | 44.284° | 2026-06-21 11:45:41.005Z | 168.763° S |
| 10 mins | 2026-06-21 13:28:41.005Z | 315.246° NNW | 2026-06-21 13:32:41.005Z | 283.847° WNW | 19.183° | 2026-06-21 13:38:41.005Z | 238.728° 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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