C/2015 O1: A long-period comet with photometric observations

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2019,（5）
• 页码范围: 27-30
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/1674-4527/19/5/65

摘要

In this work,we report the observations of the long-period comet C/2015 O1 performed on 2018 January 29-30 and April 13 with the Nanshan 1-meter wide-field telescope operated by Xinjiang Astronomical Observatory.We obtain the morphological features of C/2015 O1 using an image enhancement method,and calculate the dust-activity parameter Afρ and the coma color based on photometric analysis.An obvious fan-shaped structure was observed at different observation times.We find that the activity of C/2015 O1 gradually decreases as the comet advances toward perihelion and the observed B-V and V-R colors are consistent with those of other comets.