Jupiter and Mercury will share the same right ascension, with Jupiter passing 56' to the south of Mercury.
From South El Monte however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 8° above the horizon at dusk.
Jupiter will be at mag -1.8, and Mercury at mag -0.3, both in the constellation Cancer.
The pair will be a little too widely separated to fit comfortably within the field of view of a telescope, but will be visible to the naked eye or through a pair of binoculars.
A graph of the angular separation between Jupiter and Mercury 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 |
| Jupiter | 08h44m40s | 18°40'N | Cancer | -1.8 | 30"8 |
| Mercury | 08h44m40s | 19°37'N | Cancer | -0.3 | 5"9 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 20° from the Sun, which is in Gemini at this time of year.
The sky on 21 Mar 2026
| The sky on 21 March 2026 | ||||||||||||||||||||||||||||||||||
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12% 3 days old |
All times shown in PDT.
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Source
The circumstances of this event were computed using the DE430 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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Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.