United States Air ForceThor Delta E1Space Launch Complex 2W, Vandenberg SFB, CA, USA
IMP G
Launched
June 21, 1969
Image: NASA
Summary
IMP G launched on an United States Air Force Thor Delta E1 from Space Launch Complex 2W, Vandenberg SFB, CA, USA on June 21, 1969. The mission failed. It was United States Air Force's 495th launch, 21st this year and humanity's 980th orbital launch attempt. It was the 16th Thor Delta E1 flight and the 3rd this year. The payload was bound for Elliptical Orbit (Elliptical). 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Thor Delta E1 · United States Air Force
- Booster
- No booster details on record.
- Mission
- Astrophysics · Elliptical Orbit (Elliptical)
- Milestone
- 16th Thor Delta E1 flight · 3rd this yearUnited States Air Force's 495th launch21st this yearhumanity's 980th orbital launch attempt61st orbital launch attempt this year
Flight preview
Catalogued objects
2 catalogued: 1 payload, 1 rocket stage
- IMP 5 · NORAD 3990 · left Earth orbit June 22, 1969
FW4D · left Earth orbit June 22, 1969
Data from J. McDowell, planet4589.org
About this launch
Satellite instrumented to study interplanetary magnetic fields, energetic particles, and plasma.
Pad

Space Launch Complex 2W, Vandenberg SFB, CA, USA
22nd launch from Space Launch Complex 2W, 1st this year · 329th from Vandenberg SFB, CA, USA
99 launches from this pad · 919 from Vandenberg SFB, CA, USA
520 days after the previous launch from this pad
Questions
When did IMP G launch?
IMP G launched on June 21, 1969. The time is known to the hour, not the minute.
Where can I watch IMP G?
No webcast is on record for this launch.
What rocket launched IMP G?
Thor Delta E1, flown by United States Air Force. Thor Delta E1 spec sheet
Where did IMP G launch from?
Space Launch Complex 2W, Vandenberg SFB, CA, USA.
What orbit was IMP G going to?
Elliptical Orbit (Elliptical), a astrophysics mission.
How many satellites did IMP G launch?
1 payload from this launch is catalogued (Data from J. McDowell, planet4589.org).
