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The mean eccentricity of an object is the average eccentricity as a result of perturbations over a given time period. For example: Neptune currently has an instant (current epoch) eccentricity …
Eccentricity vector, in celestial mechanics, a dimensionless vector with direction pointing from apoapsis to periapsis Eccentric, a type of deferent, a circle or sphere used in obsolete …
This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of …
List of common astronomy symbols This is a compilation of symbols commonly used in astronomy, particularly professional astronomy.
Eccentricity vector In celestial mechanics, the eccentricity vector of a Kepler orbit is the dimensionless vector with direction pointing from apoapsis to periapsis and with magnitude …
Equation Kepler's equation solutions for five different eccentricities between 0 and 1 Kepler's equation is where is the mean anomaly, is the eccentric anomaly, and is the eccentricity. The …
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 angle measured at the center of the …
In astronomy, the term equation of time has a similar meaning. [3] The equation of the center in modern form was developed as part of perturbation analysis, that is, the study of the effects of …
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