313 Chaldaea is a large Main belt asteroid.

It is classified as a C-type asteroid and is probably composed of carbonaceous material.

It was named in honor of the Chaldeans, considered the founders of astrology.

[3] In 2003, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.07 AU.

The resulting data yielded an effective diameter of 96 ± 14 km.