👉 Demimondaines, also known as demi-moon moons, are a type of celestial body that orbits around a larger object but is not considered part of it. These bodies are often depicted in art and literature as fantastical or mythological beings, such as unicorns or fairies. They are typically described as being composed of a moon-like disk surrounded by a ring of gas and dust called the atmosphere, which can be very dense and heavy.