Acronym	sted
Name	stellated decachoron, compound of 2 pen
	©
Coxeter symbol	[2{3,3,3}]{3;3;3}
Circumradius	sqrt(2/5) = 0.632456
Inradius	1/sqrt(40) = 0.158114
General of army	o3m3m3o
Colonel of regiment	(is itself locally convex – no other uniform polychoral members)
Admiral of fleet	deca
Dual	(selfdual)
Confer	compound-component: pen
External links

The 2 compounding pens are placed in vice versas dual positioning.

Incidence matrix according to Dynkin symbol

xo3oo3oo3ox

o.3o.3o.3o.  & | 10 ♦  4 |  6 |  4 || 1
---------------+----+----+----+----++--
x. .. .. ..  & |  2 | 20 |  3 |  3 || 1
---------------+----+----+----+----++--
x.3o. .. ..  & |  3 |  3 | 20 |  2 || 1
---------------+----+----+----+----++--
x.3o.3o. ..  & ♦  4 |  6 |  4 | 10 || 1
---------------+----+----+----+----++--
x.3o.3o.3o.  & ♦  5 | 10 | 10 |  5 || 2