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Physical Characterization of Interstellar Comet 2I/2019 Q4 (Borisov)

  • Authors: Man-To Hui, Quan-Zhi Ye, Dora Föhring, Denise Hung, and David J. Tholen

2020 The Astronomical Journal 160 92.

  • Provider: AAS Journals

Caption: Figure 1.

Observing geometry of interstellar comet 2I/2019 Q4 (Borisov) in terms of (a) heliocentric and geocentric distances, (b) phase angle and solar elongation, (c) position angles of projected antisolar direction (﹩{\theta }_{-\odot }﹩) and negative heliocentric velocity (﹩{\theta }_{-{\boldsymbol{v}}}﹩), and (d) the plane angle of the comet as a function of time during our observing campaign from the UH 2.2 m telescope (red diamonds) and NEXT (blue squares).

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