That is a part of Hygiea's symbol (its wayyy to big to fit on this page) It is a zeta shaped serpent.
Hi this is Soham S. and this is about Hygiea!
Hygiea is basically a Asteroid but it is still classified a "Dwarf Planet" and its the smallest dwarf planet and the 4th largest object in the asteroid belt and its in the ''Big four" in the asteroid belt too. Hygiea's name is named after the goddess of good health the daughter of Asclepius. On the 12th of April in 1849, Annibale de Gasparis discovered Hygiea it was his first nine discoveries. Hygiea is 3.14 AU away from the Sun (2.9188e+8 in miles). Hygiea's surface is made of primitive carbonaceous. For its rotations it takes 27 hours and 37 minutes for it to complete a rotation its very slow a normal asteroid takes about 6-12 hours. It has a diameter of 300-500km and the mass is about 3% of the asteroid belt. Hygiea has a magnitude of +10.2 and that is fainter than Vesta (another object in the asteroid belt) and would need about a 4inch telescope to resolve.
It is a bit hard to find info about Hygiea but some of the fun facts are mixed in the text.