This cache represents Mercury in orbit around the Sun. It is hidden along a byway about 3.7km from the Lovell telescope. At our scale Mercury is about 27cm in diameter - the size of a football.
The cache is hidden within the enclosed area of the byway. There's no need to go off it onto the adjoining farmland.
Mercury
Mercury is the first planet in the solar system. It has a highly eccentric orbit ranging from 46 to 70 million km from the Sun. It is the smallest planet (Pluto is smaller, but that is no longer counted as a planet) with a diameter of 4,880km.
It takes 88 Earth days to orbit the Sun, and rotates very slowly on its own axis completing three rotations for every two orbits.
It has a heavily cratered surface and very little atmosphere, and temperatures range widely from about -180 to +430 degrees C due to the long slow days and nights and that eccentric orbit so near to the Sun.