Horizons-1, also known as Galaxy 13, is a geostationary communications satellite operated by Intelsat and SKY Perfect JSAT (JSAT) which was designed and manufactured by Boeing on the BSS-601 platform. It has Ku-band and C-band payload and was used to replace Galaxy 9 at the 127.0° West longitude. It covers North America, Puerto Rico, Alaska, Hawaii and Mexico.
Satellite description
The spacecraft was designed and manufactured by Boeing on the BSS-601 satellite bus. It had a launch mass of 4060 kg and a mass of 2630 kg at the beginning of its 15-year design life. When stowed for launch, it measured 5.7 m of height and 2.7 x on its sides. Its solar panels span 26.2 m when fully deployed and, with its antennas in fully extended configuration it is 7.0 m wide.
It had two wings with four solar panels each that used dual-junction GsAs solar cells. Its power system generated 9.9 kW of power at beginning of life and 8.9 kW at the end of its design life and had a 30-cell NiH battery for surviving solar eclipse.
Its propulsion system was composed of an R-4D-11-300 LAE