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  2. Mean anomaly - Wikipedia

    en.wikipedia.org/wiki/Mean_anomaly

    In celestial mechanics, the mean anomaly is the fraction of an elliptical orbit's period that has elapsed since the orbiting body passed periapsis, expressed as an angle which can be used in calculating the position of that body in the classical two-body problem. It is the angular distance from the pericenter which a fictitious body would have ...

  3. Orbital elements - Wikipedia

    en.wikipedia.org/wiki/Orbital_elements

    Instead of the mean anomaly at epoch, the mean anomaly M, mean longitude, true anomaly ν 0, or (rarely) the eccentric anomaly might be used. Using, for example, the "mean anomaly" instead of "mean anomaly at epoch" means that time t must be specified as a seventh orbital element. Sometimes it is assumed that mean anomaly is zero at the epoch ...

  4. Anomaly detection - Wikipedia

    en.wikipedia.org/wiki/Anomaly_detection

    v. t. e. In data analysis, anomaly detection (also referred to as outlier detection and sometimes as novelty detection) is generally understood to be the identification of rare items, events or observations which deviate significantly from the majority of the data and do not conform to a well defined notion of normal behavior. [1]

  5. True anomaly - Wikipedia

    en.wikipedia.org/wiki/True_anomaly

    e. In celestial mechanics, true anomaly is an angular parameter that defines the position of a body moving along a Keplerian orbit. It is the angle between the direction of periapsis and the current position of the body, as seen from the main focus of the ellipse (the point around which the object orbits). The true anomaly is usually denoted by ...

  6. Kepler's equation - Wikipedia

    en.wikipedia.org/wiki/Kepler's_equation

    where is the mean anomaly, is the eccentric anomaly, and is the eccentricity.. The 'eccentric anomaly' is useful to compute the position of a point moving in a Keplerian orbit.

  7. Anomaly - Wikipedia

    en.wikipedia.org/wiki/Anomaly

    Anomaly (physics), a failure of a symmetry of a theory's classical action. Conformal anomaly, a quantum phenomenon that breaks the conformal symmetry of the classical theory. Chiral anomaly, an anomalous nonconservation of a chiral current. Gauge anomaly, the effect of quantum mechanics that invalidates the gauge symmetry of a quantum field theory.

  8. Mean motion - Wikipedia

    en.wikipedia.org/wiki/Mean_motion

    Mean motion. In orbital mechanics, mean motion (represented by n) is the angular speed required for a body to complete one orbit, assuming constant speed in a circular orbit which completes in the same time as the variable speed, elliptical orbit of the actual body. [1] The concept applies equally well to a small body revolving about a large ...

  9. Eccentric anomaly - Wikipedia

    en.wikipedia.org/wiki/Eccentric_anomaly

    Eccentric anomaly. In orbital mechanics, the eccentric anomaly is an angular parameter that defines the position of a body that is moving along an elliptic Kepler orbit. The eccentric anomaly is one of three angular parameters ("anomalies") that define a position along an orbit, the other two being the true anomaly and the mean anomaly.