December 5, 1968 6:55 pm

HEOS 1

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Thor Delta E1

Cape Canaveral SFS, FL, USA
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December 5, 1968 6:55 pm

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Last Updated:

2026-07-13 16:15:54

HEOS 1 (Highly Eccentric Orbit Satellite) was an earth-orbiting, spin-stabilized satellite that was launched by ESA. The spacecraft objectives were to study interplanetary magnetic fields, cosmic rays, the solar wind, and the magnetosheath.
Launch Overview
Window Open 18:55 UTC
Window Close 18:55 UTC
Lift Off Dec 5, 1968 · 18:55 UTC
Launch Facility Cape Canaveral SFS, FL, USA
Launch Pad Space Launch Complex 17B
Target Orbit Elliptical Orbit
Payload Overview
Customer United States Air Force
Payload HEOS 1
Rocket Thor Delta E1
Destination Elliptical Orbit
Recovery Overview
Landing Location See Mission Notes
Landing Type RTLS / Droneship
HEOS 1 (Highly Eccentric Orbit Satellite) was an earth-orbiting, spin-stabilized satellite that was launched by ESA. The spacecraft objectives were to study interplanetary magnetic fields, cosmic rays, the solar wind, and the magnetosheath.

Height

LEO Payload

Total Launches

Status

United States Air Force
Space Launch Complex 17B
Launch Overview
Window Open 18:55 UTC
Window Close 18:55 UTC
Lift Off Dec 5, 1968 · 18:55 UTC
Launch Facility Cape Canaveral SFS, FL, USA
Launch Pad Space Launch Complex 17B
Target Orbit Elliptical Orbit
Payload Overview
Customer United States Air Force
Payload HEOS 1
Rocket Thor Delta E1
Destination Elliptical Orbit
Recovery Overview
Landing Location See Mission Notes
Landing Type RTLS / Droneship

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