Planets TonightNeptune in 2025: brightness, position and events
Brightest+7.7around Sep 15
Closest (in table)28.893 au4322 million km
Farthest30.883 au
Events this year2
Brightest last year+7.7
Events this year
| Date (JST) | Event | Mag | Dist (au) | Constellation | Elong. |
|---|---|---|---|---|---|
| 2025-03-20 08:25 | Conjunction with the Sun | +7.8 | 30.888 | Pisces | 1.3° |
| 2025-09-23 21:53 | Opposition | +7.7 | 28.884 | Pisces | 178.6° |
Magnitude through the year (lower = brighter)
Twice-monthly position and visibility
| Date | Mag | Dist (au) | Constellation | Elong. | Visibility |
|---|---|---|---|---|---|
| Jan 1 | +7.8 | 30.111 | Pisces | 76° E | Evening sky |
| Jan 15 | +7.8 | 30.338 | Pisces | 62° E | Evening sky |
| Feb 1 | +7.8 | 30.576 | Pisces | 46° E | Evening sky |
| Feb 15 | +7.8 | 30.728 | Pisces | 32° E | Evening sky |
| Mar 1 | +7.8 | 30.833 | Pisces | 18° E | Evening sky |
| Mar 15 | +7.8 | 30.883 | Pisces | 5° E | Too close to the Sun |
| Apr 1 | +7.8 | 30.870 | Pisces | 12° W | Too close to the Sun |
| Apr 15 | +7.8 | 30.799 | Pisces | 25° W | Morning sky |
| May 1 | +7.8 | 30.657 | Pisces | 40° W | Morning sky |
| May 15 | +7.8 | 30.487 | Pisces | 53° W | Morning sky |
| Jun 1 | +7.8 | 30.238 | Pisces | 69° W | Morning sky |
| Jun 15 | +7.8 | 30.011 | Pisces | 82° W | Morning sky |
| Jul 1 | +7.8 | 29.742 | Pisces | 97° W | Morning sky |
| Jul 15 | +7.7 | 29.514 | Pisces | 111° W | Morning sky |
| Aug 1 | +7.7 | 29.265 | Pisces | 127° W | Morning sky |
| Aug 15 | +7.7 | 29.097 | Pisces | 141° W | Morning sky |
| Sep 1 | +7.7 | 28.953 | Pisces | 158° W | Most of the night |
| Sep 15 | +7.7 | 28.893 | Pisces | 171° W | Most of the night |
| Oct 1 | +7.7 | 28.895 | Pisces | 172° E | Most of the night |
| Oct 15 | +7.7 | 28.959 | Pisces | 158° E | Most of the night |
| Nov 1 | +7.7 | 29.110 | Pisces | 141° E | Evening sky |
| Nov 15 | +7.7 | 29.287 | Pisces | 126° E | Evening sky |
| Dec 1 | +7.7 | 29.530 | Pisces | 110° E | Evening sky |
| Dec 15 | +7.8 | 29.766 | Pisces | 96° E | Evening sky |
Computed with the JPL DE421 ephemeris and Skyfield (times in JST). Magnitude and distance are for 12:00 JST on each date. Visibility is a rough guide for mid-northern latitudes such as Japan.
About this page
Neptune is brightest around September 2025 (magnitude +7.7); 2 conjunctions, oppositions or elongations occur this year.