Decagrammic antiprismatic prism

The decagrammic antiprismatic prism or stidappip is a prismatic uniform polychoron that consists of 2 decagrammic antiprisms, 2 decagrammic prisms, and 20 triangular prisms. Each vertex joins 1 decagrammic antiprism, 1 decagrammic prism, and 3 triangular prisms. As the name suggests, it is a prism based on a decagrammic antiprism. Being a prism based on an orbiform polytope, it is also a segmentochoron.

Vertex coordinates
The vertices of a decagrammic antiprismatic prism of edge length 1 are given by: where H = $$\sqrt{\frac{-4+2\sqrt5+\sqrt{50-22\sqrt5}}8}$$ is the distance between the antiprism's center and the center of one of its bases.
 * $$\left(±\frac12,\,±\frac{\sqrt{5-2\sqrt5}}2,\,H,\,±\frac12\right),$$
 * $$\left(±\frac{3-\sqrt5}4,\,±\sqrt{\frac{5-\sqrt5}8},\,H,\,±\frac12\right),$$
 * $$\left(±\frac{\sqrt5-1}2,\,0,\,H,\,±\frac12\right),$$
 * $$\left(±\frac{\sqrt{5-2\sqrt5}}2,\,±\frac12,\,-H,\,±\frac12\right),$$
 * $$\left(±\sqrt{\frac{5-\sqrt5}8},\,±\frac{3-\sqrt5}4,\,-H,\,±\frac12\right),$$
 * $$\left(0,\,±\frac{\sqrt5-1}2,\,-H,\,±\frac12\right),$$

Representations
A decagrammic antiprismatic prism has the following Coxeter diagrams:
 * x2s2s20/3o (full symmetry)
 * x2s2s10/3s
 * xx xo10/3ox&#x (decagrammic prism atop gyrated decagrammic prism)