document.write( "Question 1182836: Suppose that the orbit of a planet is in the shape of an ellipse with a major axis whose length is 500 million km.
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Algebra.Com's Answer #812936 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "So, the major semi-axis length is a = 500/2 = 250 millions kilometers.\r\n" );
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document.write( "The focal distance is 400 millions kilometers; so the linear eccentricity \"c\" is half of it, i.e. c = 200 millions kilometers.\r\n" );
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document.write( "Then for the minor semi-axis of the ellipse \"b\" you have\r\n" );
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document.write( "    b =  =  = 150 millions kilometers.\r\n" );
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document.write( "The canonical equation of the ellipse is\r\n" );
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document.write( "     +  = 1,\r\n" );
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document.write( "where x a y are coordinates of the orbit in millions of kilometers.\r\n" );
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\n" ); document.write( "\n" ); document.write( "On canonical equation of an ellipse read from the lesson\r
\n" ); document.write( "\n" ); document.write( " - Ellipse definition, canonical equation, characteristic points and elements \r
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