Jupiter and Mercury will share the same right ascension, with Jupiter passing 5°31' to the north 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 0° below the horizon at dusk.
Jupiter will be at mag -1.7, and Mercury at mag 1.5, both in the constellation Virgo.
The pair will be too widely separated to fit within the field of view of a telescope or pair of binoculars, but will be visible to the naked eye.
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 | 12h47m40s | 3°55'S | Virgo | -1.7 | 30"0 |
| Mercury | 12h47m40s | 9°27'S | Virgo | 1.5 | 9"6 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 15° from the Sun, which is in Virgo at this time of year.
The sky on 9 Sep 2025
| The sky on 9 September 2025 | ||||||||||||||||||||||||||||||||||
|
90% 17 days old |
All times shown in PDT.
|
|||||||||||||||||||||||||||||||||
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 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.
Related news
| 23 May 1969 | – Jupiter ends retrograde motion |
| 19 Feb 1970 | – Jupiter enters retrograde motion |
| 21 Apr 1970 | – Jupiter at opposition |
| 23 Jun 1970 | – Jupiter 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.