The traditionally used set of orbital elements is called the set of Keplerian elements, after Johannes Kepler and his laws. The Keplerian elements are six: Inclination (i) Longitude of the ascending node (Ω) Argument of periapsis (ω) Eccentricity (e) Semimajor axis (a) Mean anomaly at epoch (M0).
The traditionally used set of orbital elements is called the set of Keplerian elements after Johannes Kepler and h,is laws The Keplerian elements are six: Inclination (i) Longitude of .the ascending node (Ω) Argument of periapsis (ω) Eccentricity (e) Semimajor axis (a) Mean anomaly at epoch (M0).