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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 COSMOS 249
1 03504U 68091A 26202.31097337 .00000222 00000-0 93776-4 0 9993
2 03504 62.3403 185.7128 1011816 28.3357 336.9040 12.97173363724910Epoch: 2026-07-21T07:27Z
TLE epoch observation values (Epoch: 2026-07-21T07:27:48.099Z)
Latitude
0.00006°
Longitude
134.67993°
Altitude
576.585 km
Speed
7.911 km/s
True Right ascension
12h 22m 51s
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
17:54:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,046.226 km
Perigee altitude
498.088 km
Semi-major axis
7,650.294 km
Eccentricity
0.10118
Inclination
62.3403°
RAAN
185.7128°
Arg. of periapsis
28.3357°
True anomaly
331.76761°
Mean anomaly
336.904°
Eccentric anomaly
334.39899°
Mean motion
3.24359 °/min
Orbital period
110.99 mins
BSTAR
0.000093776
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-07-22 07:58:48.364Z | 346.504° N | 2026-07-22 08:03:48.364Z | 45.41° ENE | 30.094° | 2026-07-22 08:11:48.364Z | 107.835° ESE |
| 16 mins | 2026-07-22 09:52:48.364Z | 315.692° NNW | 2026-07-22 09:58:48.364Z | 245.978° WSW | 42.061° | 2026-07-22 10:08:48.364Z | 161.313° S |
| 7 mins | 2026-07-22 11:50:48.364Z | 269.661° W | 2026-07-22 11:53:48.364Z | 249.223° W | 13.416° | 2026-07-22 11:57:48.364Z | 225.795° WSW |
| 6 mins | 2026-07-23 00:18:48.364Z | 184.028° SSW | 2026-07-23 00:20:48.364Z | 126.744° SE | 35.424° | 2026-07-23 00:24:48.364Z | 46.378° ENE |
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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