Bad Astronomy: exploring a Wagon Wheel

Assuming a white dwarf of 0.0000468767AU radius, the semi major axis of the orbiting rubidium stellar core and debris ring are approximately:

Item                       Semimajor axis
Rubidium Core    0.000130213AU
Debris Ring          0.0001822983AU

Anyway, those seven spokes on our wagon wheel are 51.4 degrees apart.