Periodic Comets Found in Historical Records

Abstract

The following comets are identified with those of records found in Chinese, Korean, and Japanese histories: Periodic Comet Pons-Gambart (D/1827 M1 = 1827 II)= Comet 1110 K1, Comet 1861 J1(1861 II) = Comet 1500 H1, and Comet 1337 M1 = Comet 1468 S1. All of the historical records of those comets are presented here. Their orbital elements were improved and linked with each other, including the planetary perturbations in order to confirm their identifications.