Neptune Oppositions
Every upcoming opposition of Neptune through 2028, with exact times in UTC.
Neptune reaches opposition on September 26, 2026, shining at magnitude +7.8 in Pisces, 28.88 AU from Earth and visible all night.
| Date (UTC) | Event | Details | Mag | Constellation |
|---|---|---|---|---|
| Sep 26, 2026 | Opposition | 28.88 AU | +7.8 | Pisces |
| Sep 28, 2027 | Opposition | 28.87 AU | +7.8 | Pisces |
| Sep 30, 2028 | Opposition | 28.86 AU | +7.8 | Cetus |
Oppositions and greatest elongations are computed with astronomy-engine, a high-precision ephemeris. Distance, magnitude and constellation are for each event's exact moment. All dates and times are UTC.