The clue is RING
"A planetary ring is a ring of cosmic dust and other small particles orbiting around a planet in a flat disc-shaped region. "
We do not have that, artificial or not.
Space/Science » in reply to You're ring definition is too narrow and incorrect.
"A planetary ring is a ring of cosmic dust and other small particles orbiting around a planet in a flat disc-shaped region. "
We do not have that, artificial or not.