Small dipentary hexacosihecatonicosachoron

The small dipentary hexacosihecatonicosachoron, or sidpaxhi, is a nonconvex uniform polychoron that consists of 120 rhombicosahedra and 600 cubohemioctahedra. Five rhombicosahedra and five cubohemioctahedra join at each vertex.

It has the same cell counts as its conjugate, the great dipentary hexacosihecatonicosachoron.

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