Explorer 18 (IMP-A) | Delta C

Launch Success

Liftoff Time (GMT)

02:30:01

Wednesday November 27, 1963

Watch Replay

24/7 Coverage

Mission Details

Explorer 18

Wiki

Explorer 18, also called IMP-A, IMP 1 and S-74, was an American satellite launched as part of the Explorers program. Explorer 18 was the first satellite of the Interplanetary Monitoring Platform.

Highly Elliptical Orbit

1 Payload

62 kilograms

Rocket

Retired

Delta C

Active 1963 to 1967

Agency

US Air Force

Rocket

Height: 31m

Payload to Orbit

LEO: 410 kg

GTO: 82 kg

Liftoff Thrust

667 Kilonewtons

Stages

3

Launch Site

SLC-17B

Cape Canaveral SFS, Florida, USA

Fastest Turnaround

20 days 2 hours

SLC-17B

Cape Canaveral SFS, Florida, USA

Fastest Turnaround

20 days 2 hours

Stats

Delta C

1st

Mission

1st

Mission of 1963

1963

59th

Orbital launch attempt