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OpenStudy (shootforthestars):
Apogee, Perigee, and Eccentricity
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OpenStudy (shootforthestars):
OpenStudy (unklerhaukus):
do you have definition of eccentricity?
OpenStudy (shootforthestars):
No
OpenStudy (shootforthestars):
I have d=132 through 583 and r=3950
OpenStudy (unklerhaukus):
The eccentricity of an ellipse is, (according to wikipedia), the ratio of the distance between the centre of the ellipse and each focus to the length of the semimajor axis.
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OpenStudy (unklerhaukus):
|dw:1447772708516:dw|
OpenStudy (unklerhaukus):
E = f/b |dw:1447775058654:dw|
OpenStudy (unklerhaukus):
you have |dw:1447775155475:dw|
OpenStudy (unklerhaukus):
find f and b, in terms of P and A, then take E = f/b and simplify.
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