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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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USA 55 (NORAD 20547) | T-Minus Zero

Satellite

USA 55

1990-028BNORAD 20547United States (US)

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Catalog

OwnerUnited States (US)

Object typePAY

Launch siteAFWTR

Launch designator1990-028

Period93.35 min

Inclination94.09°

Altitude401 km → 476 km

RCS0.169 m²

SATCAT updated2026-03-16T00:11:03.082+00:00

Orbit (latest)

No orbit elements found yet.