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comet c2021 S4

 中国科学院紫金山天文台10月10日发布消息，2021年10月8日，国际小行星中心（MPC）发布了紫金山天文台盱眙观测站近地天体望远镜发现的一颗新彗星，命名为C/2021 S4（Tsuchinshan）。这是紫金山天文台发现的第七颗彗星，也是第五颗以Tsuchinshan（紫金山的威妥玛拼音）命名的彗星。


some of details on MPC ( one of the 9 separate observations)

D29 Purple Mountain Observatory, XuYi Station.  Observers H. B. Zhao, B. Li,
    G. Zhaori, R. Q. Hong, L. F. Hu.  Measurers H. B. Zhao, B. Li, H. Lu, G.
    Zhaori, Z. J. Xu.  1.04-m f/1.8 Schmidt + CCD.


 also known as C2021-T167 on MPC

orbitsimulator from find_orb, projectpluto

MPC

vanbuitenen 

JPL Horizons app to generate ephermeris

hkas


 

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