OKEAN 3

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10-day predictions
OKEAN 3 is classified as:

NORAD ID: 21397

Int'l Code: 1991-039A

Perigee: 556.5 km

Apogee: 579.5 km

Inclination: 82.5 °

Period: 95.9 minutes

Semi major axis: 6938 km

RCS: 9.3282 m² (large)

Launch date: June 4, 1991
Source: Commonwealth of Independent States (former USSR) (CIS)
Launch site: PLESETSK MISSILE AND SPACE COMPLEX (PKMTR)

The Okean series of satellites are all-weather radar oceanographic systems primarily designed to monitor sea-ice conditions in the Arctic Seas. The payload includes a side-looking radar, a scanning microwave radiometer, nadir-viewing microwave spectrometer, optical scanners and a data collection platform. The spacecraft is a stepped cylindrical pressurized bus 3 m high and 1.4 m diameter. The spacecraft is 3-axis stabilized (nadir pointing, aided by a gravity gradient boom), has twin solar arrays spanning 4.82 m and an 11.8 m radar antenna mounted on the Earth-facing base.

1 21397U 91039A   25077.72428874  .00006813  00000-0  51705-3 0  9996
2 21397  82.5183 320.9701 0016561  99.9701 260.3394 15.01959550811554

Source of the keplerian elements: AFSPC