Small ditrigonal hecatonicosihexacosihecatonicosachoron

The small ditrigonal hecatonicosihexacosihecatonicosachoron, or sidthixhi, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 120 great stellated dodecahedra, and 120 small ditrigonal dodecicosidodecahedra. 1 tetrahedron, 1 great stellated dodecahedron, and 3 small ditrigonal dodecicosidodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small dishexacosidishecatonicosachoron.