2013/11/11 by J. Cerný, Jakub, Cerny
Engineering · Environmental Science · Physics and Astronomy · #Astro and Planetary Science #Earth and Planetary Astrophysics (astro-ph.EP) #FOS: Physical sciences #Isotope Analysis in Ecology #Planetary Science and Exploration #Space Exploration and Technology #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1311.2653
openalex publication_date 2013/11/11 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28
Comet C/2012 S1 (ISON) shows strange photometric behavior compared to many\npast comets. Shortly after its discovery, majority of astronomers expected its\nsurviving until perihelion passage. Unprecedented evolution of its photometric\nparameters nearly 2 AU from Sun, pushed this comet under survival line defined\nby formula of John. E. Bortle, where ~70% comets in his analysis disintegrated.\nHowever comparison with photometric behavior of group of past disintegrated\ncomets showing large differences and ISON doesn't seems to be typical member of\nthis group. In other hand, compared to surviving, dynamically new comets which\nwere observed far away from Sun and survived its perihelion passage, ISON\nshowing peculiar gradual decrease of its activity, probably caused by\nexhaustion of active fractions of its nucleus.\n