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

@article{Hui2020PhysicalCO,
  title={Physical Characterisation of Interstellar Comet 2I/2019 Q4 (Borisov)},
  author={M. Hui and Q. Ye and D. Fohring and D. Hung and D. Tholen},
  journal={arXiv: Earth and Planetary Astrophysics},
  year={2020}
}
We present a study of interstellar comet 2I/2019 Q4 (Borisov) using both preperihelion and postperihelion observations spanning late September 2019 through late January 2020. The intrinsic brightness of the comet was observed to continuously decline throughout the timespan, likely due to the decreasing effective scattering cross-section as a result of volatile sublimation with a slope of $-0.43 \pm 0.02$ km$^{2}$ d$^{-1}$. We witnessed no significant change in the slightly reddish colour of the… Expand
Unusual polarimetric properties for interstellar comet 2I/Borisov

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