8ZHOU Hongnan,QIAN Bochen, HUANG Keliang and LI Qibin1. Department of Astronomy, Nanjing University, Nanjing 210093, China,2. Shanghai Observatory, Chinese Academy of Sciences, Shanghai 200030, China,3. Physics Department, Nanjing Normal University, Nanjing 210097, China,4. Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China.Time of impact of fragment P2 of comet SL 9 on Jupiter[J].Chinese Science Bulletin,1997,42(5):396-398.
