True Anomaly, `nu`[`vecn,vecr`]

The True Anomaly calculator computes the True Anomaly, ν, of an orbit based on the eccentricity and radius vectors.

INSTRUCTIONS: Enter the following:

• E  - Eccentricity vector
• R  - Orbital radius vector

True Anomaly (ν): The True Anomaly is returned in degrees.  However, this can be automatically converted to other angle units via the pull-down menu.

Related Calculators:

• Compute True Anomaly from Eccentricity and Eccentric Anomaly
• Vector Magnitude
• Vector Dot Product
• Vector Calculator

The  Math / Science

The True Anomaly is the angle between the direction of periapsis and the current position of the body.