launched fromUSA

Explorer 21

Partial

OCT 04196403:45:00 UTC

Reached lower than planned orbit.

Reached lower than planned orbit.

LIFTOFF

OCT 04 1964

03:45:00 UTC

Partial

launched from LC-17A Canaveral

aboard Delta C / Altair-2A Delta 26 into HEO

Payload

Explorer 21

Heliophysics