Images of many of these spheres include a large X in their center. It is intended to represent an intersection of the zodiac and celestial equator. Note Webster's above reference to ARCH- . When most members of the solar system are seen, they follow an arch in their journey across the sky. Some early Christian documents have also made this archangelic association.
Many sources identify archangels with members of the solar system.
A problem arises because each archangel is associated with various planets, and vice versa. Take Raphael for instance. Some manuscripts have associated Raphael with Mercury, others say Raphael represents the sun. Then there's Gabriel. You can quickly look at a footnote by clicking on its reference number.