Small dispinosnub prismatosnubdisnub tetrishexacosichoron

The small dispinosnub prismatosnubdisnub tetrishexacosichoron, or sednasposidstux, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 600 icosahedra, 4800 cubohemioctahedra (some of which lie in the same hyperplanes, forming 2400 compounds of two), 1200 small dodecicosahedra (forming 600 compounds of two), 3600 pentagrammic prisms, and 6000 triangular prisms.

One small stellated dodecahedron, one icosahedron, eight cubohemioctahedra (eight compounds), ten small dodecicosahedra (ten compounds), five pentagrammic prisms, and five triangular prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary hecatonicosiprismatohecatonicosihexacosichora and 5 small dipentary hecatonicosiprismatohexacosihecatonicosachora. In the process, some of the cubohemioctahedron cells blend out.

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