Science
CUBESAT XI-IV (CO-57)
CubeSat Pioneer · University of Tokyo
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One of the first CubeSats from the University of Tokyo, XI-IV established Japan's tradition of university satellite programs now spanning dozens of missions. At 1 kg, launched alongside CUTE-1, it proved students with a small budget could build a functional spacecraft. XI-IV's success inspired a generation of Japanese space engineers and directly influenced the global CubeSat movement.
Its orbit
- Orbit
- Low Earth Orbitcan appear as a fast-moving star at dawn or dusk
- Altitude
- 503–512 mi (810–824 km)
- Inclination
- 98.7°
- One orbit
- 101.1 minutes14.2 orbits a day
- NORAD ID
- 27848
- Int’l designator
- 2003-031J
- Launched
- 2003
Orbital elements from CelesTrak, as of 7 Nov 2026.
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