Looking into possible orientation methods used for the pyramid complexes at Giza, after reading Nell and Ruggles' 2014 article (https://doi.org/10.1177/0021828614533065).

Could γ and δ Ursae Majoris (Phecta and Megrez) be the stars used to align the pyramids?

According to Stellarium, the difference in their right ascensions was at a minimum in the year 2587 BCE: that year, when one of them was due north, the other was just 0.005° off due north.

#palaeoastronomy #astronomy #ancientegypt #pyramids