each of the vectors defining the axes directions a square grid with size $4 R_{1/2} \cdot 4 R_{1/2}$ and a million square cells is defined. For each cell a projected mass is defined that equals the mass of all bound star particles whose projection on the grid is included in the respective cell.\
Using the information in the projected mass maps, the dimensions of the object along the principal axes can be determined. In the process of dimensions calculations ellipses containing cells with different levels of mass density are being fitted. The distribution of these ellipses around the center of the image allows for the calculation of the ratio of the dimensions. For each of the three planes ${(x,y), (y,z), (z,x)}$ the ratio between the shortest and longest dimensions $c$ and $a$ is measured: ${ \frac{c}{a}_{x,y}, \frac{c}{a}_{y,z}, \frac{c}{a}_{z,x} }$.\
After the previously presented analysis is performed the first available scalar indicator of the transformation of the object can be determined: $$\frac{c}{a} = min \left( \left( \frac{c}{a}\right)_{x,y}, \left( \frac{c}{a}\right)_{y,z}, \left( \frac{c}{a}\right)_{z,x} \right).$$ The time evolution of the previously defined quantity is presented in figure \[fig:figure8\].

Velocity dispersion and tangential velocity
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With the directions of the principal axes determined, the velocity 