SES-18 and SES-19 are Northrop Grumman GeoStar-3 C-band communications satellites built for SES's accelerated U.S. spectrum transition. SES-18 entered service at 103 degrees west, while SES-19 reached 135 degrees west as an in-orbit spare supporting continuity of broadcast and data services.
Alerts are unavailable because this mission is no longer active.