The influence of solar activity on the discovery of comets of various classes

1Guliyev, AS, 1Qasimov, HA
1Nasir al-Din al-Tusi Shamakhi Astrophysical Observatory, Pirqulu, Azerbaijan
Kinemat. fiz. nebesnyh tel (Online) 2020, 36(1):35-43
https://doi.org/10.15407/kfnt2020.01.035
Start Page: Dynamics and Physics of Solar System Bodies
Language: Russian
Abstract: 

The article studies the distribution of the dates of comets discovery on the phases of the 11-year solar activity cycle (SA) for 4 groups: long-period comets (LPC) with the period of more than 200 years; periodic comets (PC) of the Jupiter family; LPC having a weak absolute brightness; one group of comets having perihelion near the plane perpendicular to the ecliptic. The analysis covers comets found before the start of the 24th cycle. The earlier conclusion about the difference between PC and LPC is confirmed. It has been established that a single maximum in the PC distribution corresponds to the post-maximum era of SA. Weak LPC have no such maximum. The selected LPC group also has a distinctive distribution regarding to SA. In all cases, the period of decline of the cycles is dominated by the number of cometary discoveries.

Keywords: comets, discovery, solar activity, statistics
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