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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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NAVSTAR 55 (USA 178) (NORAD 28361) | T-Minus Zero

Satellite

NAVSTAR 55 (USA 178)

2004-023ANORAD 28361United States (US)Ops: B

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Catalog

OwnerUnited States (US)

Object typePAY

Launch siteAFETR

Launch designator2004-023

Period718.02 min

Inclination54.79°

Altitude19,760 km → 20,607 km

RCS3.212 m²

SATCAT updated2026-06-06T06:11:10.797+00:00

Groups

active

Orbit (latest)

Epoch2026-06-09T21:46:52.826304+00:00

Inclination54.8591°

RAAN87.0055°

Eccentricity0.0160013

Mean motion2.005566 rev/day

Sourcegp

Fetched2026-06-10T08:46:17.769+00:00