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WESTPAC

US-Australian Technology Demonstrator · US / Australia (Joint Program)

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WESTPAC, a joint US-Australian small satellite launched in 1998 to test miniaturized Earth observation and communications technologies for defense and civilian applications in the Asia-Pacific region — part of a wave of late-1990s small satellite missions proving that useful space capability didn't require billion-dollar spacecraft.

Its orbit

Orbit
Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
Altitude
509 mi (819–820 km)
Inclination
99.0°
One orbit
101.1 minutes14.2 orbits a day
NORAD ID
25398
Int’l designator
1998-043E
Launched
1998

Orbital elements from CelesTrak, as of 22 Sep 2026.

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