A proof of De Rop’s long-term lunar cycle (1799 anomalistic years)

The idea is to validate Belgian astronomer Willy de Rop’s 1971 calculations, which can be found here. From our 2016 post discussing his paper, De Rop’s long-term lunar cycle: De Rop’s basic premise is that there’s a correlation between the so-called ‘lunar wobble’ period and the anomalistic year. His paper contains a geometric proof, and … Continue reading A proof of De Rop’s long-term lunar cycle (1799 anomalistic years)