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- Semi-major_axis abstract "In geometry, the major axis of an ellipse is the longest diameter: a line (line segment) that runs through the center and both foci, with ends at the widest points of the shape. The semi-major axis is one half of the major axis, and thus runs from the centre, through a focus, and to the edge of the ellipse; essentially, it is the radius of an orbit at the orbit's two most distant points. For the special case of a circle, the semi-major axis is the radius. One can think of the semi-major axis as an ellipse's long radius.The length of the semi-major axis a of an ellipse is related to the semi-minor axis' length b through the eccentricity e and the semi-latus rectum ℓ, as follows:The semi-major axis of a hyperbola is, depending on the convention, plus or minus one half of the distance between the two branches. Thus it is the distance from the center to either vertex (turning point) of the hyperbola.A parabola can be obtained as the limit of a sequence of ellipses where one focus is kept fixed as the other is allowed to move arbitrarily far away in one direction, keeping ℓ fixed. Thus and tend to infinity, a faster than b.".
- Semi-major_axis thumbnail An_image_describing_the_semi-major_and_semi-minor_axis_of_eclipse.png?width=300.
- Semi-major_axis wikiPageExternalLink ellipsesemiaxes.html.
- Semi-major_axis wikiPageID "23409699".
- Semi-major_axis wikiPageRevisionID "602804841".
- Semi-major_axis hasPhotoCollection Semi-major_axis.
- Semi-major_axis subject Category:Conic_sections.
- Semi-major_axis subject Category:Orbits.
- Semi-major_axis type Abstraction100002137.
- Semi-major_axis type Attribute100024264.
- Semi-major_axis type ConicSection113872975.
- Semi-major_axis type ConicSections.
- Semi-major_axis type Figure113862780.
- Semi-major_axis type PlaneFigure113863186.
- Semi-major_axis type Shape100027807.
- Semi-major_axis comment "In geometry, the major axis of an ellipse is the longest diameter: a line (line segment) that runs through the center and both foci, with ends at the widest points of the shape. The semi-major axis is one half of the major axis, and thus runs from the centre, through a focus, and to the edge of the ellipse; essentially, it is the radius of an orbit at the orbit's two most distant points. For the special case of a circle, the semi-major axis is the radius.".
- Semi-major_axis label "Grand axe".
- Semi-major_axis label "Halbachsen der Ellipse".
- Semi-major_axis label "Półoś wielka".
- Semi-major_axis label "Semi-major axis".
- Semi-major_axis label "Semiasse maggiore".
- Semi-major_axis label "Semieixo maior".
- Semi-major_axis label "Semieje mayor".
- Semi-major_axis label "Большая полуось".
- Semi-major_axis label "نصف المحور الرئيسي".
- Semi-major_axis label "半長軸".
- Semi-major_axis label "軌道長半径".
- Semi-major_axis sameAs Velká_poloosa_dráhy.
- Semi-major_axis sameAs Halbachsen_der_Ellipse.
- Semi-major_axis sameAs Ημιμεγάλος_Άξονας.
- Semi-major_axis sameAs Semieje_mayor.
- Semi-major_axis sameAs Grand_axe.
- Semi-major_axis sameAs Sumbu_semi-mayor.
- Semi-major_axis sameAs Semiasse_maggiore.
- Semi-major_axis sameAs 軌道長半径.
- Semi-major_axis sameAs 긴반지름.
- Semi-major_axis sameAs Półoś_wielka.
- Semi-major_axis sameAs Semieixo_maior.
- Semi-major_axis sameAs m.02md81.
- Semi-major_axis sameAs Q171594.
- Semi-major_axis sameAs Q171594.
- Semi-major_axis sameAs Semi-major_axis.
- Semi-major_axis wasDerivedFrom Semi-major_axis?oldid=602804841.
- Semi-major_axis depiction An_image_describing_the_semi-major_and_semi-minor_axis_of_eclipse.png.
- Semi-major_axis isPrimaryTopicOf Semi-major_axis.
