The orbit of Halley's comet has an eccentricity of 0.97

[sunflower]

The orbit of Halley's comet has an eccentricity of 0.97 and semimajor axis of 2885 million kilometers. Give an equation for the orbit with the center at the origin and major axis on the x axis. Where is (the center of) the sun on this graph?

 

[mmm4444bot]

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[sunflower]

I'm so sorry I didn't read your guidelines before posting. And I have no idea of this topic ellipse conic sections. Please help me answer this or explain the problems clearly. I really don't understand.