Keywords: Aratea 93v.jpg Planetary configuration for 18 March 816 Positions believed to be based on computation for the Sun and Moon and observations for the other five planets S C Mccluskey Astronomies and Cultures in Early Medieval Europe p 141 Leiden Universiteitsbibliotheek ms Voss lat Q79 fol 93v https //disc leidenuniv nl 443/webclient/DeliveryManager custom_att_2 simple_viewer pid 960908 Leiden University Library Website circa 830 840 author PD-Art PD-old-100 Leiden Aratea Medieval diagrams Astronomical diagrams |