Not quite that close but Mercury seems to have an interesting interaction with the sun https://en.m.wikipedia.org/wiki/Mercury_(planet)#Spin-orbit_resonance ht

Not quite that close but Mercury seems to have an interesting interaction with the sun https://en.m.wikipedia.org/wiki/Mercury_(planet)#Spin-orbit_resonance https://en.m.wikipedia.org/wiki/Mercury_(planet)#Spin-orbit_...