Octahemioctahedron

The Uniform Polyhedron $U_3$, also called the Octatetrahedron, whose Dual Polyhedron is the Octahemioctacron. It has Wythoff Symbol ${\textstyle{3\over 2}}\,3\,\vert\,3$. Its faces are $8\{3\}+4\{6\}$. It is a Faceted Cuboctahedron. For unit edge length, its Circumradius is

$$R=1.$$

References

Wenninger, M. J. Polyhedron Models. Cambridge, England: Cambridge University Press, p. 103, 1989.