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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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
TSKBM/KB1
Mission
Defense Weapon
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, 2.0 m
Radar Cross Section
5.596 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 17 hours ago
TLE from 17 hours ago
0 COSMOS 249
1 03504U 68091A 25256.23902237 .00000280 00000-0 12354-3 0 9992
2 03504 62.3501 241.5853 0988954 324.5723 29.3258 12.96952624684562Epoch: 2025-09-13T05:44Z
TLE epoch observation values (Epoch: 2025-09-13T05:44:11.532Z)
Latitude
-0.00011°
Longitude
163.06195°
Altitude
636.451 km
Speed
7.849 km/s
True Right ascension
16h 06m 20s
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
15:39:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,029.689 km
Perigee altitude
516.36 km
Semi-major axis
7,651.162 km
Eccentricity
0.0989
Inclination
62.3501°
RAAN
241.5853°
Arg. of periapsis
324.5723°
True anomaly
35.53066°
Mean anomaly
29.3258°
Eccentric anomaly
32.35848°
Mean motion
3.24304 °/min
Orbital period
111.01 mins
BSTAR
0.00012354
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2025-09-14 00:21:12.702Z | 184.281° SSW | 2025-09-14 00:26:12.702Z | 110.221° ESE | 36.37° | 2025-09-14 00:33:12.702Z | 44.516° NE |
| 12 mins | 2025-09-14 02:17:12.702Z | 265.998° W | 2025-09-14 02:21:12.702Z | 321.625° NNW | 32.495° | 2025-09-14 02:29:12.702Z | 28.076° NE |
| 11 mins | 2025-09-14 04:15:12.702Z | 316.855° NNW | 2025-09-14 04:19:12.702Z | 348.835° N | 18.427° | 2025-09-14 04:26:12.702Z | 32.58° NE |
| 14 mins | 2025-09-14 06:13:12.702Z | 339.343° N | 2025-09-14 06:19:12.702Z | 21.286° NNE | 21.139° | 2025-09-14 06:27:12.702Z | 65.706° ENE |
| 20 mins | 2025-09-14 08:08:12.702Z | 333.72° NNW | 2025-09-14 08:17:12.702Z | 43.232° NE | 36.791° | 2025-09-14 08:28:12.702Z | 113.698° SE |
| 21 mins | 2025-09-14 10:03:12.702Z | 318.729° NNW | 2025-09-14 10:13:12.702Z | 243.25° WSW | 42.576° | 2025-09-14 10:24:12.702Z | 164.141° S |
| 11 mins | 2025-09-14 12:02:12.702Z | 285.668° WNW | 2025-09-14 12:07:12.702Z | 258.215° W | 16.893° | 2025-09-14 12:13:12.702Z | 226.454° WSW |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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