Eccentricity of orbit

Many bodies in space move in orbits that are conic sections. For an elliptical orbit, the eccentricity can be calculated from the parameters of the orbit. The eccentricity can be used to judge the elongation of the elliptical orbit.

Links:

  1. Wikipedia, ellipse.

eccentricity

eccentricity of the orbit.

Symbol:

e

Latex:

\(e\)

Dimension:

dimensionless

semiminor_axis

semiminor_axis of the orbit.

Symbol:

b

Latex:

\(b\)

Dimension:

length

semimajor_axis

semimajor_axis of the orbit.

Symbol:

a

Latex:

\(a\)

Dimension:

length

law

e = sqrt(1 - (b / a)^2)

Latex:
\[e = \sqrt{1 - \left(\frac{b}{a}\right)^{2}}\]