A Proton rocket carrying three Glonass-M navigation satellites launched Sept. 2 from the Baikonur Cosmodrome in Kazakhstan.

The launch occurred at 4:53 a.m. Moscow time. The three satellites separated from the Proton’s DM-2 upper stage about three-and-a-half hours later.

The Russian Federal Space Agency, Roskosmos, said in a statement posted on its website that the satellites had reached their intended orbit.

The three satellites were the second trio of Glonass satellites to launch this year.