Neptune is the eighth and farthest known planet from the Sun. Its average distance from the Sun is about 2.8 billion miles or 4.5 billion kilometers. However, its distance from the Sun can vary depending on its position in its elliptical orbit. At its closest approach, Neptune is about 2.7 billion miles or 4.3 billion kilometers away from the Sun, while at its farthest point, it can be as far as 2.9 billion miles or 4.7 billion kilometers away.
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