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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 1275
1 12504U 81053A 26138.69404550 .00000038 00000-0 24138-4 0 9995
2 12504 82.9584 287.2353 0038335 260.8076 98.8743 13.74531260255228Epoch: 2026-05-18T16:39Z
TLE epoch observation values (Epoch: 2026-05-18T16:39:25.531Z)
Latitude
0.00004°
Longitude
161.00029°
Altitude
990.707 km
Speed
7.354 km/s
True Right ascension
19h 08m 56s
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
08:35:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,008.706 km
Perigee altitude
952.287 km
Semi-major axis
7,358.634 km
Eccentricity
0.00383
Inclination
82.9584°
RAAN
287.2353°
Arg. of periapsis
260.8076°
True anomaly
99.308°
Mean anomaly
98.8743°
Eccentric anomaly
99.09118°
Mean motion
3.43833 °/min
Orbital period
104.7 mins
BSTAR
0.000024138
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-05-19 10:13:20.093Z | 169.661° S | 2026-05-19 10:19:20.093Z | 90.468° ESE | 40.88° | 2026-05-19 10:25:20.093Z | 14.98° NNE |
| 7 mins | 2026-05-19 12:02:20.093Z | 256.318° W | 2026-05-19 12:05:20.093Z | 290.824° WNW | 19.608° | 2026-05-19 12:09:20.093Z | 333.173° NNW |
| 10 mins | 2026-05-19 21:12:20.093Z | 8.73° NNE | 2026-05-19 21:17:20.093Z | 83.356° E | 36.776° | 2026-05-19 21:22:20.093Z | 149.205° SSE |
| 7 mins | 2026-05-19 22:59:20.093Z | 312.464° NW | 2026-05-19 23:02:20.093Z | 275.038° WNW | 22.608° | 2026-05-19 23:06:20.093Z | 229.595° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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