USA-353

USA-353 is an American SIGINT reconnaissance satellite which is operated by the National [Reconnaissance Office]. Launched in April 2024, it is the secret Orion satellite.

Overview

The satellite launched on the last Delta [IV Heavy] launch and was the last Delta rocket launch and ending its many decades of service to US National Security and Various missions.
Orion also known as Mentor is a SIGINT/ELINT satellite build to replace Magnum satellite and the COMINT capability also made Orion a replacement for the Mercury satellite. It is called that the satellite has a reflector of a diameter as big as ~100m