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
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: 8 hours ago
TLE from 8 hours ago
0 COSMOS 249
1 03504U 68091A 25362.63435796 .00000650 00000-0 22894-3 0 9996
2 03504 62.3504 336.3551 0995816 346.5077 11.0965 12.97044936698369Epoch: 2025-12-28T15:13Z
TLE epoch observation values (Epoch: 2025-12-28T15:13:28.527Z)
Latitude
-0.00004°
Longitude
10.6427°
Altitude
530.86 km
Speed
7.959 km/s
True Right ascension
22h 25m 25s
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
22:24:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
2,034.54 km
Perigee altitude
510.782 km
Semi-major axis
7,650.798 km
Eccentricity
0.09958
Inclination
62.3504°
RAAN
336.3551°
Arg. of periapsis
346.5077°
True anomaly
13.59553°
Mean anomaly
11.0965°
Eccentric anomaly
12.31326°
Mean motion
3.24327 °/min
Orbital period
111 mins
BSTAR
0.00022894
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-12-29 00:36:22.418Z | 218.297° SW | 2025-12-29 00:41:22.418Z | 8.368° NNE | 43.791° | 2025-12-29 00:47:22.418Z | 34.52° NE |
| 8 mins | 2025-12-29 02:34:22.418Z | 302.368° NW | 2025-12-29 02:37:22.418Z | 337.863° N | 19.65° | 2025-12-29 02:42:22.418Z | 19.941° NNE |
| 7 mins | 2025-12-29 04:33:22.418Z | 346.131° N | 2025-12-29 04:35:22.418Z | 2.139° NNE | 14.248° | 2025-12-29 04:40:22.418Z | 35.521° NE |
| 14 mins | 2025-12-29 06:28:22.418Z | 343.908° N | 2025-12-29 06:34:22.418Z | 31.708° NE | 24.357° | 2025-12-29 06:42:22.418Z | 81.728° E |
| 19 mins | 2025-12-29 08:23:22.418Z | 330.707° NNW | 2025-12-29 08:31:22.418Z | 55.853° ENE | 43.199° | 2025-12-29 08:42:22.418Z | 134.063° SE |
| 18 mins | 2025-12-29 10:18:22.418Z | 306.314° NW | 2025-12-29 10:26:22.418Z | 247.827° W | 32.881° | 2025-12-29 10:36:22.418Z | 186.452° SSW |
| 4 mins | 2025-12-29 22:50:22.418Z | 114.803° SE | 2025-12-29 22:51:22.418Z | 101.101° ESE | 15° | 2025-12-29 22:54:22.418Z | 69.205° E |
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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