On November 3, 2018, Russia launched the GLONASS-M 757 navigation satellite at 23:17 Moscow time from the Plesetsk cosmodrome by using the Soyuz-2.1B medium-range rocket with a Fregat-M upper stage. According to the Russian ministry of defense, the satellite has safely reached its orbit after its launch. November 3’s launch marked the third successful launch of orbital space of this year from Russia.
GLONASS is a counterpart to the US Global Positioning System, the European Galileo Satellite Constellation and the Chinese BeiDou Satellite Navigation and Communication System. GLONASS was initially launched in 1982 as an independent Global Navigation Satellite System of Russia. Currently, the constellation consists of 25 satellites among which 23 are operational, while one spacecraft (the first GLONASS-K1) is in flight testing status and the GLONASS 715 satellite suffered anomaly in June. This newly launched satellite will replace the recently failed member of Russia’s navigation system.
The GLONASS system is used by both military and civilians for determining the real-time position and velocity. The data provided by the system has an accuracy of 10 meters for the public sector while has an accuracy of 10-20 meters for military users. The time accuracy is under 1000 nanoseconds. Currently, the GLONASS-M second generation and GLONASS-K1 satellites are in service while the GLONASS-K2 and KM satellites are under development.