Ditrigonary hexacosidishecatonicosachoron

The ditrigonary hexacosidishecatonicosachoron, or dittixdy, is a nonconvex uniform polychoron that consists of 600 regular octahedra, 120 great icosidodecahedra, and 120 small ditrigonal dodecicosidodecahedra. 3 octahedra, 120 great icosidodecahedra, and 6 small ditrigonal dodecicosidodecahedra meet each of its 1200 vertices.

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