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    ETS (Engineering Test Satellite)

    Artist's concept of ETS-8 in orbit
    Satellites launched by the Japan’s NASDA (National Space Development Agency) to demonstrate new spacecraft techniques and test new equipment and launch vehicles. They are also known by the national name Kiku (“chrysanthemum”).

    ETS-7 consisted of two spacecraft – a chase satellite (Hikoboshi) and a target satellite (Orihime) – which carried out experiments in remote-controlled rendezvous-docking and space robotics. ETS-8, scheduled for launch in 2006, will be the world’s largest satellite in geostationary orbit. Among other things, it will test multimedia broadcast systems and carry a high-accuracy atomic clock to test its positioning systems using GPS (Global Positioning System) data.


    Spacecraft Launch date Launch vehicle Launch site Orbit Mass (kg)
    ETS-1 Sep. 9, 1975 N-1 Tanegashima 975 × 1,103 km × 47° 85
    ETS-2 Feb. 23, 1977 N-1 Tanegashima 35,854 × 35,860 km × 12° 130
    ETS-3 Feb. 11, 1981 N-2 Tanegashima 240 × 20,680 km × 28° 640
    ETS-4 Sep. 3, 1982 N-1 Tanegashima 966 × 1,226 km × 45° 385
    ETS-5 Aug. 27, 1987 H-1 Tanegashima 35,770 × 35,805 km × 2° 550
    ETS-6 Aug. 28, 1994 H-2 Tanegashima failed to reach GSO 3,800
    ETS-7 Nov. 28, 1997 H-2 Tanegashima 550 km × 35° 2,860


    Related categories

       • JAPANESE SPACECRAFT
       • SATELLITES AND SPACE PROBES
       • JAPAN IN SPACE



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