This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com EXOS


Class: Earth. Type: Ionosphere. Nation: Japan. Agency: Japan(EXOS C).

Optical investigations of ionosphere. EXOS-C (OHZORA). Optical study of the stratosphere and middle atmosphere. Study of the specific phenomena of the ionospheric plasma over the southern Atlantic geomagnetic anomaly zone which was discovered by the third scientific satellite "TAIYO". Launch vehicle Mu-3S-4, launching organization ISAS (Institute of Space and Astronautical Science).


Specification


EXOS Chronology


04 February 1978 SS-05 Kyokko Launch Site: Kagoshima . Launch Vehicle: Mu-3S. Mass: 103 kg. Perigee: 639 km. Apogee: 3,952 km. Inclination: 65.4 deg.

Auroral studies. Active life - two years. Function: 1) Observation of wide angle global auroral pictures using UV television camera. 2) Spectrophotometry of ultraviolet air glow. 3) Observation of the energy spectrum of photoelectrons and auroral electrons. 4) Mass spect rometry of the ionized atmospheric species in the thermosphere. 5) Measurements of density and temperature of ambient electrons in the thermosphere. 6) Observation of electromagnetic and plasma waves and the emission associated with auroral phenomena.


16 September 1978 SS-06 Jikiken Launch Site: Kagoshima . Launch Vehicle: Mu-3S. Mass: 100 kg. Perigee: 251 km. Apogee: 21,192 km. Inclination: 31.3 deg.

Launching organization: Institute of Space and Aeronautical Science, University of Tokyo. Stimulated plasma wave experiment, natural plasma wave measurement, plasma parameter measurement by VLF Doppler technique, electric field probe and plasma density me asurement, energetic particle analysis, and controlled electron beam emission experiment. Characteristics: weight 90.5 kg, configuration - polyhedron with 38 faces, height 0.6m , diameter 0.75m, attitude control spin stabilization, life two years.


14 February 1984 SS-09 Onzora Launch Site: Kagoshima . Launch Vehicle: Mu-3S. Mass: 180 kg. Perigee: 247 km. Apogee: 331 km. Inclination: 74.6 deg.

Optical investigations of ionosphere. EXOS-C (OHZORA). Optical study of the stratosphere and middle atmosphere. Study of the specific phenomena of the ionospheric plasma over the southern Atlantic geomagnetic anomaly zone which was discovered by the third scientific satellite 'TAIYO'. Launch vehicle Mu-3S-4, launching organization ISAS (Institute of Space and Astronautical Science). Launch time 0800 GMT.


21 February 1989 Akebono Launch Site: Kagoshima . Launch Vehicle: Mu-3S. Mass: 295 kg. Perigee: 272 km. Apogee: 8,554 km. Inclination: 75.1 deg.

Studied aurora borealis, auroral australis. EXOS-D (Akebono). Observation in high precision of behaviour and acceleration mechanism of aurora particles in Earth magnetosphere. Launching organization ISAS. Launch time 2330 GMT.



Bibliography:



Back to Index
Last update 12 March 2001.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .