Activity of comet 103P/Hartley 2 from September 30 to November 04, 2010

作者：Shi JianChun^*; Zhao HaiBin; Ma YueHua

来源：Science China Physics,Mechanics & Astronomy, 2012, 55(8): 1515-1518.

DOI：10.1007/s11433-012-4812-8

• comets
• 103P/Hartley 2
• activity

The CCD photometric observation of comet 103P/Hartley 2 with broadband optical filters was carried out at Xuyi Station of Purple Mountain Observatory, Chinese Academy of Sciences by use of Near Earth Object Telescope (NEOT). We monitored the comet from September 30 to November 4, 2010 and investigated the variation of activities. The Af rho parameter derived from our r broadband data varies from 46.0 to 126.0 cm and increases with time. The dust production rate in terms of Af rho was measured and a tentative calculation of the dust (or gas) loss-rate of nucleus was executed under the assumption that the nucleus of comet 103P/Hartley 2 is spherical. The r-band image and the surface brightness profile taken on September 30, 2010 was measured and the gradient of surface brightness profile of 103P/Hartley 2 showed m < -1.5.

• 出版日期2012-8
• 单位中国科学院紫金山天文台