What is Cruithn?

Answer 1

Cruithn, also known as Cruithne, is an asteroid in a unique orbit that closely resembles that of Earth. It is classified as a quasi-satellite of Earth, meaning it shares a similar orbital path but is not a true satellite. Discovered in 1986, Cruithne has an orbital period of about 1.5 years and can be observed from Earth, although it doesn't pose any danger to our planet. Its interesting trajectory allows it to appear to orbit Earth in a complex pattern, leading to its classification as a "co-orbital" object.