Mercury and Neptune will share the same right ascension, with Mercury passing 5°42' to the south of Neptune.
From South El Monte however, the pair will not be readily observable since they will be very close to the Sun, at a separation of only 13° from it.
Mercury will be at mag 2.4 in the constellation Sextans, and Neptune at mag 8.0 in the neighbouring constellation of Leo.
A graph of the angular separation between Mercury and Neptune around the time of closest approach is available here.
The positions of the two objects at the moment of conjunction will be as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| Mercury | 10h33m40s | 4°07'N | Sextans | 2.4 | 10"5 |
| Neptune | 10h33m40s | 9°50'N | Leo | 8.0 | 2"1 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 15° from the Sun, which is in Leo at this time of year.
The sky on 14 Jun 2026
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All times shown in PDT.
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Warning
Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.
Source
The circumstances of this event were computed using the DE440 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).
This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.
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| 26 Feb 2097 | – Neptune at opposition |
| 17 May 2097 | – Neptune ends retrograde motion |
Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.