Cosmos 1791 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. It was positioned in plane 11 of the constellation.
1 17066U 86086A 12338.11045301 .00000059 00000-0 45094-4 0 812 2 17066 082.9452 326.4407 0041873 014.0947 346.1366 13.75610546308385