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由于哈雷彗星将于1986年返回太阳系,因此,苏联和日本均在准备发射哈雷彗星探测卫星。苏联将于1984年12月22日至28日期间发射两颗相同的卫星,先把金星再入探测器送到金星附近(于1985年6月14日～22日到达并展开)之后,利用金星重力场进行变轨飞行,以便于1986年与哈雷彗星相遇。第一颗星将于1986年3月8日与哈雷彗星相遇,第二颗星大约晚一星期,相遇时速度约为77公里/秒,距离分别为1万公里和3000公里。卫星采用三轴稳定,主要特点是太阳电池帆板大,天线增益高,有一个
As Halley’s comet returns to the solar system in 1986, the Soviet Union and Japan are preparing to launch Halley’s comet satellite. The Soviet Union will launch two identical satellites from December 22 to December 28, 1984, after sending Venus reentry detectors to Venus first (arriving and expanding on June 14-22, 1985) and using Venus Gravity field orbit orbit, in order to meet Halley’s comet in 1986. The first star will meet Comet Halley on March 8, 1986, with the second star about one week late, meeting at a speed of about 77 km / sec and a distance of 10,000 km and 3,000 km respectively. Satellite using three-axis stability, the main feature is the large solar panels, antenna gain high, there is a