How Far is Neptune from Earth?
The distance of Neptune from Earth is currently 4,578,981,079 kilometers, equivalent to 30.608598 Astronomical Units. Light takes 4 hours, 14 minutes and 33.8368 seconds to travel from Neptune and arrive to us.
The following chart shows the distance of Neptune from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of Neptune from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest approach of Neptune to Earth
Between January 2013 and December 2100 the closest approach of Neptune to Earth happens on Tue Oct 29 2041 at a distance of 28.81417973 Astronomical Units, or 4,310,539,942 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.