UNITED STATES AIR FORCE
Delta 1604 | IMP 8
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Oct 26, 1973 at 02:26 UTC
▸ Flight profile›
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MISSION OVERVIEW
Earth-orbiting satellite designed to study interplanetary and outer magnetospheric regions.
LAUNCH DETAILS
VEHICLE
Delta 1604AGENCY
United States Air ForceMISSION
IMP 8
MISSION TYPE
Astrophysics
TARGET ORBIT
Elliptical Orbit
LAUNCH PAD
Space Launch Complex 17BLAUNCH SITE
Cape Canaveral SFS, FL, USACOUNTRY
USA
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 4b575897-55d3-46fc-b265-a8ca4c4645c2
Reported date: Oct 26, 1973 at 02:26 UTC
Last synced: 30 seconds ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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VEHICLE — Delta 1604 →
MANUFACTURER
McDonnell Douglas
VARIANT
1604
FLIGHTS
2
SUCCESSES
2
SUCCESS RATE
100%
The Delta 1000 series (also referred to as Straight-Eight) was an American expendable launch system which was used to conduct eight orbital launches between 1972 and 1975. It was a member of the Delta family of rockets. Several variants existed, differentiated by a four digit numerical code.
FREQUENTLY ASKED QUESTIONS
When is the Delta 1604 | IMP 8 launch?
The Delta 1604 | IMP 8 is scheduled for Friday, October 26, 1973 at 2:26 AM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for IMP 8?
The Delta 1604 | IMP 8 mission uses the Delta 1604 rocket, manufactured by McDonnell Douglas. The Delta 1604 has flown 2 times with a 100% success rate.
Where is the Delta 1604 | IMP 8 launching from?
The launch takes place from Space Launch Complex 17B at Cape Canaveral SFS, FL, USA.
What orbit is IMP 8 going to?
The IMP 8 mission is targeting Elliptical Orbit.
Who is launching IMP 8?
The Delta 1604 | IMP 8 is operated by United States Air Force.
Can I watch the Delta 1604 | IMP 8 launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 28, 2026 21:45 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 28, 2026 21:45 UTC
Launch date set: Oct 26, 1973 at 02:26 UTC
NET (No Earlier Than) confirmed by United States Air Force
Mar 28, 2026 21:45 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 30 seconds ago
●Launch Library 230 seconds ago
Launch ID: 4b575897-55d3-46fc-b265-a8ca4c4645c2
●Open-Meteo Weather2 days ago
Pad weather at 28.45, -80.57
Mission Profile
IMP 8 was a Delta 1604 mission operated by United States Air Force that lifted off from Space Launch Complex 17B, Cape Canaveral SFS, FL, USA on October 26, 1973. The flight carried its payload on a astrophysics mission to Elliptical Orbit. The launch was a success.