Altair SR Relay Satellite
by rygle - uploaded on September 14, 2016, 9:58 pm
Altair SR - a Russian geosynchronous TV and telemetry relay satellite.
Found on wikimedia https://commons.wikimedia.org/wiki/File:Altair_SR_relay_satellite.svg
Originally from http://ston.jsc.nasa.gov/collections/TRS/_techrep/RP1357.pdf (but has been extensively cleaned up from the original by FredTheOyster for Wikimedia)
More info https://en.wikipedia.org/wiki/Luch_(satellite)