Program

HEOS

Payloads
2
In orbit
0
Operational (CelesTrak)
0
Re-entered
2
First launch
1968-12-05
Latest launch
1972-01-31

Payloads in this program

NameStatus
HEOS-A1Re-entered 1975-10-28
HEOS-A2Re-entered 1974-09-03

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