How far is Neptune from Earth today?
Earth – Neptune · 2 November 2026
4,350,894,222 km
4.35 billion km
29.08 AU
light: 4 h 2 min
Value for the start of the day (UTC); once the page loads it updates live.
3D distance from the JPL “Keplerian Elements for Approximate Positions of the Major Planets” – accurate to about 0.01%. Earth and Neptune orbit the Sun at different speeds, so the distance keeps changing.
Distance over time
Where it is today
Top view of the plane of Earth’s orbit, compressed distance scale.
Upcoming closest approaches
| Date | Event | Distance |
|---|---|---|
| 27 September 2027 | closest approach | 4.32 billion km 28.87 AU |
| 28 September 2027 | opposition | 4.32 billion km 28.87 AU |
| 29 September 2028 | closest approach | 4.32 billion km 28.86 AU |
| 30 September 2028 | opposition | 4.32 billion km 28.86 AU |
| 1 October 2029 | closest approach | 4.32 billion km 28.86 AU |
| 2 October 2029 | opposition | 4.32 billion km 28.86 AU |
| 4 October 2030 | closest approach | 4.32 billion km 28.85 AU |
| 5 October 2030 | opposition | 4.32 billion km 28.85 AU |
Opposition: Earth passes between the Sun and the planet, which is then visible all night. The closest approach falls within a few days of opposition (the orbits are elliptical and inclined).