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# Eccentricty `||vece||`

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Equation / Last modified by Administrator on 2015/08/11 07:06
`e = `

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ID

MichaelBartmess.Eccentricty `||vece||`

UUID

26bc277e-e3ca-11e3-b7aa-bc764e2038f2

This equation produces the norm of the Eccentricity Vecotor, `vece`, with input being the components of the orbital radius vector, `vecr` and the components of the velocity vector, `vecv`.

# Notes

The orbits and trajectories that can be characterized by eccentricity are:

elliptical: circular: e = 1 parabolic trajectory hyperbolic trajectory | 0 <
e> 1 |

This equation,

**Eccentricty `||vece||`**, references 2 equations/constants.**Equations and Constants **

This equation,

**Eccentricty `||vece||`**, is used in 1 calculator.**Calculators**