Records of Ketu in Stone Inscriptions

Stone inscriptions seen all over India are engravings on stones giving details on grants, donations and the like. They serve as records of celestial events as well. Two stone inscriptions of AD 1295 (in Sanskrit from Cambodia) and AD 1792 (in Persian from Srirangapattana near Mysore) refer to Ketu, generally used for the descending node of the Moon's orbit. The positions, as derived from eclipses of the same years, do not match in one case dated AD 1295. As a coincidence, the second one points to the same location in the sky. Zanab, the word used may imply Ketu or a comet. A thorough search around the position yields the eruption of planetary nebula NGC 7662 as a possible recorded event.