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COSMOS 1275

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COSMOS 1275 is classified as:


NORAD ID: 12504
Int'l Code: 1981-053A
Perigee: 960.9 km
Apogee: 1,021.7 km
Inclination: 83.0 °
Period: 104.8 minutes
Semi major axis: 7362 km
RCS: 3.2441 m2 (large)
Launch date: June 4, 1981
Source: Commonwealth of Independent States (former USSR) (CIS)
Launch site: PLESETSK MISSILE AND SPACE COMPLEX (PKMTR)

Cosmos 1275 was part of a 6-satellite Soviet military navigation system distributed in orbital planes spaced 30 degrees apart, and launched from the Plesetsk cosmodrome aboard a Cosmos rocket. Navigation information was derived from Doppler-shifted VHF transmissions (approximately 150 and 400 MHz) of the satellite position and orbital data. By acquiring fixes from several satellite, a user's location could be calculated with an accuracy of 100 m. The time needed to ascertain a position was dependent upon the user's latitude and the number of operational spacecraft in orbit. Normally, accurate location determination could be made within 1-2 hours.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 12504U 81053A   18023.08417435  .00000027  00000-0  12074-4 0  9992
2 12504  82.9603   9.4688 0041251  89.5740 339.1418 13.74306249838167
Source of the keplerian elements: AFSPC