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Preparing the latest launch data.

T-Minus Zero

Primary launch schedule data: The Space Devs - Launch Library 2

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EXPLORER 21 (IMP-2) (NORAD 889) | T-Minus Zero

Satellite

EXPLORER 21 (IMP-2)

1964-060ANORAD 889United States (US)Ops: D

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Catalog

OwnerUnited States (US)

Object typePAY

Launch siteAFETR

Launch designator1964-060

Period2080.34 min

Inclination33.72°

Altitude917 km → 94,291 km

SATCAT updated2026-01-31T03:45:02.972+00:00

Orbit (latest)

No orbit elements found yet.