What are the true anomaly and the mean anomaly?
True anomaly is the angle, V, between lines drawn from the centre of mass (near the centre of the Sun, S), to a planet P, and to the perihelion point B, where the planet comes closest to the Sun. The mean anomaly is the angle.
How to Calculate Mean Anomaly?
Mean Anomaly calculator uses Mean Anomaly = Eccentric Anomaly-Eccentricity*sin(Eccentric Anomaly) to calculate the Mean Anomaly, The Mean Anomaly formula is defined as the fraction of an elliptical orbit's period that has elapsed since the orbiting body passed periapsis, expressed as an angle that can be used in calculating the position of that body in the classical two-body problem. Mean Anomaly is denoted by M symbol.
How to calculate Mean Anomaly using this online calculator? To use this online calculator for Mean Anomaly, enter Eccentric Anomaly (E) & Eccentricity (e) and hit the calculate button. Here is how the Mean Anomaly calculation can be explained with given input values -> 1831.098 = 0.62831853071784-0.12*sin(0.62831853071784).