Hendecagonal-pentagonal antiprismatic duoprism

The hendecagonal-pentagonal antiprismatic duoprism or henpap is a convex uniform duoprism that consists of 11 pentagonal antiprismatic prisms, 2 pentagonal-hendecagonal duoprisms, and 10 triangular-hendecagonal duoprisms. Each vertex joins 2 pentagonal antiprismatic prisms, 3 triangular-hendecagonal duoprisms, and 1 pentagonal-hendecagonal duoprism.

Vertex coordinates
The vertices of a hendecagonal-pentagonal antiprismatic duoprism of edge length 2sin(π/11) are given by all central inversions of the last three coordinates of: where j = 2, 4, 6, 8, 10.
 * $$\left(1,\,0,\,0,\,2\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11},\,\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11}\right),$$
 * $$\left(\cos\frac{j\pi}{11},\,±\sin\frac{j\pi}{11},\,0,\,2\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11},\,\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11}\right),$$
 * $$\left(1,\,0,\,±\frac{(1+\sqrt5)\sin\frac\pi{11}}2,\,\sqrt{\frac{5-\sqrt5}{10}}\sin\frac\pi{11},\,\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11}\right),$$
 * $$\left(\cos\frac{j\pi}{11},\,±\sin\frac{j\pi}{11},\,±\frac{(1+\sqrt5)\sin\frac\pi{11}}2,\,\sqrt{\frac{5-\sqrt5}{10}}\sin\frac\pi{11},\,\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11}\right),$$
 * $$\left(1,\,0,\,±\sin\frac\pi{11},\,-\sqrt{\frac{5-2\sqrt5}{5}}\sin\frac\pi{11},\,\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11}\right),$$
 * $$\left(\cos\frac{j\pi}{11},\,±\sin\frac{j\pi}{11},\,±\sin\frac\pi{11},\,-\sqrt{\frac{5-2\sqrt5}{5}}\sin\frac\pi{11},\,\sqrt{\frac{5+\sqrt5}{10}}\sin\frac\pi{11}\right),$$

Representations
A hendecagonal-pentagonal antiprismatic duoprism has the following Coxeter diagrams:
 * x11o s2s10o (full symmetry; pentagonal antiprisms as alternated decagonal prisms)
 * x11o s2s5s (pentagonal antiprisms as alternated dipentagonal prisms)