Heaviest satellite launched by Echostar Satellite Services, LLC into space at 6,900 kg
Operated by Echostar Satellite Services, LLC of USA, Echostar 21 is a commercial satellite launched for the purpose of communications.
Constructed by Space Systems/Loral (USA), it was launched into space using Proton as the launch vehicle from Baikonur Cosmodrome on 7 June 2017. Echostar 21 orbits around the Earth as a GEO satellite.
Designated with COSPAR ID 2017-032A and NORAD ID 42749, Echostar 21 is designed to operate in space for a lifetime of 15 years. It has a launch mass of 6,900 kg.
With an orbital eccentricity of 3.08E-04, the satellite's perigee, which is the point of the orbit closest to the Earth's center of mass, is 35,773km while its apogee, which is the point of the orbit farthest from the Earth's center of mass, is 35,799km. It takes 1,436 minutes to orbit the Earth.
Echostar 21 orbits along the longitude of 10 degrees at an inclination of 7 degrees.