Triakis octahedral tegum

The triakis octahedral tegum, also called the triakis octahedral bipyramid, is a convex isochoric polychoron with 48 sphenoids as cells. As the name suggests, it can be constructed as a tegum based on the triakis octahedron.

In the variant obtained as the dual of the uniform truncated cubic prism, if the triakis octahedron's short edges have length 1, its height is $$3+2\sqrt2 ≈ 5.82843$$.