Program

HEAO

Payloads: 3
In orbit: 0
Operational (CelesTrak): 0
Re-entered: 3
First launch: 1977-08-12
Latest launch: 1979-09-20

Owners

NASA Marshall Space Flight Center3

Built by

TRW Inc.3

Payloads in this program

Name	NORAD	Launch date	Status
HEAO 1	10217	1977-08-12	Re-entered 1979-03-15
HEAO 2	11101	1978-11-13	Re-entered 1982-03-25
HEAO 3	11532	1979-09-20	Re-entered 1981-12-07

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