Acronym	sisdipthi
Name	small stellated dipental trishecatonicosachoron
Circumradius	sqrt[4+sqrt(5)] = 2.497212
Colonel of regiment	padohi
Face vector	1440, 7200, 4560, 360
Confer	general polytopal classes: Wythoffian polychora
External links

As abstract polytope sisdipthi is isomorphic to gisdipthi, thereby interchanging pentagons and pentagrams, and replacing the decagons by decagrams, respectively ike by gike, sissid by gad, and sidditdid by gidditdid.

Further it is isomorphic to sidipthi, thereby likewise interchanging pentagons and pentagrams, but maintaining the decagons, respectively replacing ike by gike, sissid by gad, and sidditdid by saddid.

Finally it is isomorphic to gidipthi, thereby maintaining pentagons and pentagrams, but replacing the decagons by decagrams, respectively replacing sidditdid by gaddid.

Incidence matrix according to Dynkin symbol

o5o3x5x5/3*b

. . . .      | 1440 |    5    5 |    5    5   5 |   1   1   5
-------------+------+-----------+---------------+------------
. . x .      |    2 | 3600    * |    2    0   1 |   1   0   2
. . . x      |    2 |    * 3600 |    0    2   1 |   0   1   2
-------------+------+-----------+---------------+------------
. o3x .      |    3 |    3    0 | 2400    *   * |   1   0   1
. o . x5/3*b |    5 |    0    5 |    * 1440   * |   0   1   1
. . x5x      |   10 |    5    5 |    *    * 720 |   0   0   2
-------------+------+-----------+---------------+------------
o5o3x .      ♦   12 |   30    0 |   20    0   0 | 120   *   *
o5o . x5/3*b ♦   12 |    0   30 |    0   12   0 |   * 120   *
. o3x5x5/3*b ♦   60 |   60   60 |   20   12  12 |   *   * 120

o5o3/2x5x5/2*b

. .   . .      | 1440 |    5    5 |    5    5   5 |   1   1   5
---------------+------+-----------+---------------+------------
. .   x .      |    2 | 3600    * |    2    0   1 |   1   0   2
. .   . x      |    2 |    * 3600 |    0    2   1 |   0   1   2
---------------+------+-----------+---------------+------------
. o3/2x .      |    3 |    3    0 | 2400    *   * |   1   0   1
. o   . x5/2*b |    5 |    0    5 |    * 1440   * |   0   1   1
. .   x5x      |   10 |    5    5 |    *    * 720 |   0   0   2
---------------+------+-----------+---------------+------------
o5o3/2x .      ♦   12 |   30    0 |   20    0   0 | 120   *   *
o5o   . x5/2*b ♦   12 |    0   30 |    0   12   0 |   * 120   *
. o3/2x5x5/2*b ♦   60 |   60   60 |   20   12  12 |   *   * 120

o5/4o3x5x5/3*b

.   . . .      | 1440 |    5    5 |    5    5   5 |   1   1   5
---------------+------+-----------+---------------+------------
.   . x .      |    2 | 3600    * |    2    0   1 |   1   0   2
.   . . x      |    2 |    * 3600 |    0    2   1 |   0   1   2
---------------+------+-----------+---------------+------------
.   o3x .      |    3 |    3    0 | 2400    *   * |   1   0   1
.   o . x5/3*b |    5 |    0    5 |    * 1440   * |   0   1   1
.   . x5x      |   10 |    5    5 |    *    * 720 |   0   0   2
---------------+------+-----------+---------------+------------
o5/4o3x .      ♦   12 |   30    0 |   20    0   0 | 120   *   *
o5/4o . x5/3*b ♦   12 |    0   30 |    0   12   0 |   * 120   *
.   o3x5x5/3*b ♦   60 |   60   60 |   20   12  12 |   *   * 120

o5/4o3/2x5x5/2*b

.   .   . .      | 1440 |    5    5 |    5    5   5 |   1   1   5
-----------------+------+-----------+---------------+------------
.   .   x .      |    2 | 3600    * |    2    0   1 |   1   0   2
.   .   . x      |    2 |    * 3600 |    0    2   1 |   0   1   2
-----------------+------+-----------+---------------+------------
.   o3/2x .      |    3 |    3    0 | 2400    *   * |   1   0   1
.   o   . x5/2*b |    5 |    0    5 |    * 1440   * |   0   1   1
.   .   x5x      |   10 |    5    5 |    *    * 720 |   0   0   2
-----------------+------+-----------+---------------+------------
o5/4o3/2x .      ♦   12 |   30    0 |   20    0   0 | 120   *   *
o5/4o   . x5/2*b ♦   12 |    0   30 |    0   12   0 |   * 120   *
.   o3/2x5x5/2*b ♦   60 |   60   60 |   20   12  12 |   *   * 120