Program

HEO SIGINT

Payloads: 4
In orbit: 4
Operational (CelesTrak): 4
Re-entered: 0
First launch: 2006-06-28
Latest launch: 2017-09-24

Owners

National Reconnaissance Office4

Built by

Unknown US manufacturer (classified satellite)4

Payloads in this program

Name	NORAD	Launch date	Status
USA 184	29249	2006-06-28	Operational
USA 200	32706	2008-03-13	Operational
USA 259	40344	2014-12-13	Operational
USA 278	42941	2017-09-24	Operational

From GCAT by Jonathan McDowell (CC BY 4.0). Roles are counted from the catalogue itself, not from GCAT type labels, which GCAT describes as patchy. About this source