COSMOS 249, 3504
Orbit data source: Space-Track
COSMOS 249, 3504 is a payload satellite owned by PKO (CIS) in LEO that was launched on Sun, 20 Oct 1968 UTC via a TSIKLON-2A launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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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3504 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
TSKBM/KB1
Mission
Spacecraft
Bus & Motor
IS, Unknown motor
Mass
1,400 kg wet, ~1,400 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
CYL + TRUSS, 1.1 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 COSMOS 249
1 03504U 68091A 26313.31487872 .00000321 00000-0 11616-3 0 9995
2 03504 62.3403 268.5691 1018443 50.8338 317.8765 12.97224749739314Epoch: 2026-11-09T07:33Z
TLE epoch observation values (Epoch: 2026-11-09T07:33:25.521Z)
Latitude
0.00005°
Longitude
106.71959°
Altitude
736.651 km
Speed
7.746 km/s
True Right ascension
17h 54m 16s
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
17:15:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,051.073 km
Perigee altitude
492.836 km
Semi-major axis
7,650.092 km
Eccentricity
0.10184
Inclination
62.3403°
RAAN
268.5691°
Arg. of periapsis
50.8338°
True anomaly
309.26923°
Mean anomaly
317.8765°
Eccentric anomaly
313.65461°
Mean motion
3.24372 °/min
Orbital period
110.98 mins
BSTAR
0.00011616
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Other satellites on launch #91 in the year 1968 (1968-10-20 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 249 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 | 2026-11-09 22:29:07.091Z | 178.04° S | 2026-11-09 22:32:07.091Z | 120.921° SE | 28.798° | 2026-11-09 22:35:07.091Z | 59.402° ENE |
| 4 mins | 2026-11-10 00:25:07.091Z | 287.823° WNW | 2026-11-10 00:27:07.091Z | 329.159° NNW | 17.76° | 2026-11-10 00:29:07.091Z | 2.456° NNE |
| 9 mins | 2026-11-10 06:14:07.091Z | 357.307° N | 2026-11-10 06:17:07.091Z | 38.954° NE | 27.989° | 2026-11-10 06:23:07.091Z | 100.376° ESE |
| 12 mins | 2026-11-10 08:08:07.091Z | 311.697° NW | 2026-11-10 08:12:07.091Z | 249.227° W | 60.983° | 2026-11-10 08:20:07.091Z | 161.661° S |
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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