How far away is neptune from earth?

When Neptune and Earth line up on the same side of the sun, at their closest, they are only 2.7 billion miles (4.3 billon kilometers) apart. But when the planets are on opposite sides of the sun, they can put as many as 2.9 billion miles (4.7 billion km) between them. read more

So, the closest point occurs when Earth and Neptune are on the same side of the Sun. Earth is at its most distant point from the Sun, and Neptune is at its closest. At this point, Earth and Neptune are separated by only 4.301 billion kilometers. read more

The distance from one planet to another is constantly shifting because both bodies are moving through space. When Neptune and Earth line up on the same side of the sun, at their closest, they are only 2.7 billion miles (4.3 billon kilometers) apart. read more

If the earth was on the same side of the Sun as Neptune, at its maximum distance from the Sun (ie its nearest distance to Neptune) and Neptune was also at its minimum distance from the sun (ie, its nearest distance to earth), the minimum distance of Neptune from Earth would be 4298 million km (or 4.298 billion km). read more