COSMOS 1275, 12504
Orbit data source: Space-Track
COSMOS 1275, 12504 is a payload satellite owned by VMF (CIS) in LEO that was launched on Thu, 04 Jun 1981 UTC via a KOSMOS 11K65M 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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12504 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Omsk Av. Zav.
Mission
Spacecraft
Bus & Motor
KAUR-1 11F627, Unknown motor
Mass
800 kg wet, 800 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
CYL + ANT, 8.5 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 COSMOS 1275
1 12504U 81053A 26253.34287296 .00000028 00000-0 13942-4 0 9991
2 12504 82.9620 202.5777 0038514 302.8456 56.8994 13.74538133270974Epoch: 2026-09-10T08:13Z
TLE epoch observation values (Epoch: 2026-09-10T08:13:44.223Z)
Latitude
-0.00005°
Longitude
89.76148°
Altitude
970.813 km
Speed
7.374 km/s
True Right ascension
13h 30m 18s
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
15:20:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,008.813 km
Perigee altitude
952.131 km
Semi-major axis
7,358.609 km
Eccentricity
0.00385
Inclination
82.962°
RAAN
202.5777°
Arg. of periapsis
302.8456°
True anomaly
57.27009°
Mean anomaly
56.8994°
Eccentric anomaly
57.08465°
Mean motion
3.43835 °/min
Orbital period
104.7 mins
BSTAR
0.000013942
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Other satellites on launch #53 in the year 1981 (1981-06-04 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 1275 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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-09-11 07:31:33.841Z | 17.918° NNE | 2026-09-11 07:36:33.841Z | 74.15° E | 28.138° | 2026-09-11 07:41:33.841Z | 128.806° SE |
| 10 mins | 2026-09-11 09:17:33.841Z | 334.406° NNW | 2026-09-11 09:22:33.841Z | 260.447° W | 43.711° | 2026-09-11 09:27:33.841Z | 202.868° SW |
| 11 mins | 2026-09-11 21:01:33.841Z | 170.078° S | 2026-09-11 21:06:33.841Z | 92.489° ESE | 63.752° | 2026-09-11 21:12:33.841Z | 13.843° NNE |
| 7 mins | 2026-09-11 22:49:33.841Z | 257.055° W | 2026-09-11 22:52:33.841Z | 290.279° WNW | 19.341° | 2026-09-11 22:56:33.841Z | 332.048° NNW |
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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