United States Air ForceThor Delta E1Space Launch Complex 2E, Vandenberg SFB, CA, USA
IMP F
Launched
May 24, 1967
Image: NASA
Summary
IMP F launched on an United States Air Force Thor Delta E1 from Space Launch Complex 2E, Vandenberg SFB, CA, USA on May 24, 1967. It was United States Air Force's 398th launch, 26th this year and humanity's 704th orbital launch attempt. It was the 6th Thor Delta E1 flight and the 3rd this year. The payload was bound for Elliptical Orbit (Elliptical). It reached a 249 × 214,389 km orbit inclined 67.2°. One object from this launch is catalogued.
- 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
- 6th Thor Delta E1 flight · 3rd this yearUnited States Air Force's 398th launch26th this yearhumanity's 704th orbital launch attempt56th orbital launch attempt this year
Flight preview
Orbit: as tracked
IMP 4 · NORAD 2817 · 1967-051 · Space-Track
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1967-051A
- Epoch
- 1967-05-24 14:19:54 UTC
- Mean motion
- 0.2264743 rev/day
- Eccentricity
- 0.94177
- Inclination
- 67.172°
- Ascending node
- 167.734°
- Arg. of perigee
- 179.986°
- Mean anomaly
- 0.012°
- Element set
- 999
- Rev at epoch
- 0
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: Elliptical. Ascent drawn from padside's representative profile.
Catalogued objects
1 catalogued: 1 payload
- IMP 4 · NORAD 2817 · left Earth orbit May 25, 1967
Data from J. McDowell, planet4589.org
About this launch
Satellite instrumented to study interplanetary magnetic fields, energetic particles, and plasma.
Pad

Space Launch Complex 2E, Vandenberg SFB, CA, USA
31st launch from Space Launch Complex 2E, 3rd this year · 263rd from Vandenberg SFB, CA, USA
47 launches from this pad · 919 from Vandenberg SFB, CA, USA
34 days after the previous launch from this pad
Questions
When did IMP F launch?
IMP F launched on May 24, 1967. The time is known to the hour, not the minute.
Where can I watch IMP F?
No webcast is on record for this launch.
What rocket launched IMP F?
Thor Delta E1, flown by United States Air Force. Thor Delta E1 spec sheet
Where did IMP F launch from?
Space Launch Complex 2E, Vandenberg SFB, CA, USA.
What orbit did IMP F reach?
It reached a 249 × 214,389 km orbit inclined 67.2°.
How many satellites did IMP F launch?
1 payload from this launch is catalogued (Data from J. McDowell, planet4589.org).
