Small dipentary hecatonicosihexacositrishecatonicosachoron

The small dipentary hecatonicosihexacositrishecatonicosachoron, or sidphixthi, is a nonconvex uniform polychoron that consists of 120 small stellated dodecahedra, 120 icosahedra, 600 cubohemioctahedra, 120 small rhombidodecahedra, and 120 small icosicosidodecahedra. One small stellated dodecahedron, one icosahedron, five cubohemioctahedra, five small rhombidodecahedra, and five small icosicosidodecahedra join at each vertex.

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