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The Earth's orbit is elliptical and it takes a year to get round the ellipse once.

The ellipse is almost a circle - the minor axis is only 0.014% smaller than the major axis.

The Sun is off-centre by 2.5 million kilometres and the Earth is closest in January (147.1 million km) and furthest in July (152.1 million km), when it is at either end of the major axis of the ellipse.

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10y ago

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