ChubuSat-1 is a Japanese micro-satellite technology demonstration mission, jointly developed by a consortium of universities (Nagoya University and Daido University) and aerospace companies in the Chubu region of central Japan, which is the core region of Japan’s aerospace industries. ChubuSat-1 is developed to expand the satellite business by significantly reducing the cost of spacecraft and applications, and also to demonstrate the advanced technology level of the small aerospace businesses in this region.


The microsatellite is almost a cube of size: 58 cm x 55 cm x 50 cm and a mass of ~ 50 kg. The design life is 6 months. Structure: The ChubuSat-1 design employs a standardized, modularized, general purpose and flexible satellite system architecture. The main structure consists of sandwich panels of aluminum skin and aluminum honeycomb core which has light mass and high stiffness. The light panels, whose total mass is < 10 kg, meet both the stiffness requirements from the rocket and the mass requirement from the system design. The structure of ChubuSat-1 has been developed from the STM (Structural and Thermal test Model) which was tested by a modal survey and vibration test with qualification test level/

Orbital parameters

Name                 CHUBUSAT-1
NORAD                ?
COSPAR designation   ?
Inclination (degree) ?
RAAN                 ?
Eccentricity         ?
ARGP                 ?
Orbit per day        ?
Period               ?
Semi-major axis      ?
Perigee x apogee     ?
Drag factor          ?
Mean Anomaly         ?

Overview of the communication subsystem


437.485 1200 AFSK, 9600 FSK CW


437.485 1200 AFSK, 9600 FSK


145.980 1200 AFSK, 9600 FSK





Launched and active

Homepage and other references:

eoPortal Chubusat-1 information