The Influence Of Individual Stars On The long-Term Dynamics Of Comets C/2014 UN271 And C/2017 K2 Piotr A. Dybczyński and Małgorzata Królikowska A&A, 660 (2022) A100 Published online: 20 April 2022 DOI: 10.1051/0004-6361/202143018