Pioneer 4 Able IV lunar-flyby spacecraft family
The Pioneer 4 family comprised the 1959 U.S. lunar-flyby probe that achieved Earth escape velocity, passed the Moon, returned radiation-belt measurements, and continued into heliocentric orbit.
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Identity
- Aliases
- Pioneer 4Able IVP-1
- Family Name
- Pioneer 4
- Full Name
- Pioneer 4 Able IV lunar-flyby spacecraft family
- Roles
- interplanetary_probeflybytechnology_demonstratorresearch
- Status
- retired
- Type
- spacecraft
Details
- Description
- The Pioneer 4 family comprised the 1959 U.S. lunar-flyby probe that achieved Earth escape velocity, passed the Moon, returned radiation-belt measurements, and continued into heliocentric orbit.
- First Flight Year
- 1,959
- Last Flight Year
- 1,959
- Operator
- Spacecraft Specs
- Launch Mass Kg
- 6.08
Links
- Official Url
- https://science.nasa.gov/mission/pioneer-4/
Assets & Meta
- Creation Time
- August 6, 2026 at 17:34:11 UTC
- Updated Time
- August 14, 2026 at 23:10:48 UTC