* Institute of Space and Astronautical Science, 4-6-1 Komaba, Meguro, Tokyo, 153, Japan
** Faculty of Engineering, Tokai University, Kitakaname Hiratsuka, Kanagawa, 259-12, Japan
Abstract:
The paper overwievs the bending of the ion tail of Comet Halley between the period of the first of December, 1985 and the first of April, 1986 by using the solar wind and interplanetary magnetic field data which were obtained by Japan's first interplanetary probe ‘SAKIGAKE’.