July 17, 2019 updates Posted on July 17, 2019June 28, 2020 by Doug Loss Classification of solar sail attitude dynamics with and without angular momentum https://link.springer.com/article/10.1007/s42064-018-0045-6 Nekhoroshev Estimates for the Survival Time of Tightly Packed Planetary Systems https://arxiv.org/abs/1907.06660 A Substellar Companion to a Hot Star in K2’s Campaign 0 Field https://arxiv.org/abs/1907.06662 Astro2020 APC White Paper: Durable Agency Support for Exoplanet Catalogs and Archives https://arxiv.org/abs/1907.06977