Cruithne has been nicknamed ‘Earth’s second moon’ Posted on 2021/04/11 by Carl Robitaille Cruithne has been nicknamed 'Earth's second moon'. Its elliptical orbit around the Sun is in resonance with the Earth's, so that from our perspective it appears to be following a bean-shaped orbit around us pic.twitter.com/9JRYnWgoJy— Matt Henderson (@matthen2) April 10, 2021