launched from USA

Explorer 59

Success
AUG 12197815:12:00 UTC

First satellite to use Lagrangian point and halo orbit.

Later re-classified as the International Cometary Explorer. Satellite still operational as of 2014.

launched from SLC-17B Canaveral

aboard Delta 2914 Delta 144 into HEO

Payload

Explorer 59 (ISEE-3)

Magnetospheric research satellite