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MAYAK is classified as:

NORAD ID: 42830
Int'l Code: 2017-042F
Perigee: 585.9 km
Apogee: 603.3 km
Inclination: 97.5 °
Period: 96.4 minutes
Semi major axis: 6965 km
RCS: Unknown
Launch date: July 14, 2017
Source: Commonwealth of Independent States (former USSR) (CIS)

MAYAK is a Russian cubesat developed by a group of young scientists named "Your sector of space" with support of the Moscow State University of Mechanical Engineering (MSUME). Mayak is intended to become the brightest orbital object in the night sky by deploying an optical reflector.In orbit, the 3U CubeSat will deploy four triangular reflectors, 4 m2 each, which form a tetrahedral shape. The reflectors are made from metallized membrane with reflection coefficient of 95%. The reflector will provide a -10 optical magnitude at the beginning of the flight to allow for easy tracking. Mayak will be put into a tumbling motion over all axes, with at least 1 revolution per second.The satellite mission has three objectives:
To demonstrate that space has become closer, and now it's possible for a group of friends and like-minded people to launch a real satellite.
To perform real-life tests of an aerodynamic braking system that can be used to de-orbit space debris in the future safely and without a need for a booster.
To collect new data about atmospheric density at high altitudes and use it as a basis for cross-checks of calulations of apparent magnitude of space objects and satellites.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 42830U 17042F   21342.85347555  .00001353  00000-0  13392-3 0  9998
2 42830  97.4558 206.2341 0012500 277.6634  82.3167 14.93361337239829
Source of the keplerian elements: AFSPC