At 21:34 UTC on the 5th of april 2018, an Ariane 5 with ECA vehicle number L5102 launched two communications satellites into orbit. The successful flight launched from Kourou in French Guiana from Pad ELA-3. The mission named VA242 placed Japan’s DSN 1/Superbird 8 and Britain’s Hylas 4 into their planned orbit. VA242 was the 64th Ariane 5 ECA success in 66 flights. Both satellites were placed in a 250 x 35,786 km x 3 deg geosynchronous transfer orbits about 34 minutes after takeoff.
The Japanese DSN 1/Superbird 8 is designed to provide X-band communications for the Japanese Ministry of Defence. It will also provide Ku and Ka band commercial services for Sky Perfect JSAT Group from 162 degrees East. The satellite is a NEC Corporation DS2000 series, weighing 5,348kg.
The British Hylas 4 was built for British-based Avanti Communications, is designed to provide Ka band communication services to Europe and Africa from 33.5 degrees West. Designed by Orbital ATK it is a GEOStar 3 series weighing 4,050 kg.