The planets Jupiter and Mercury will make a close approach, passing within a mere 21.5 arcminutes of each other.
From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 5° above the horizon at dusk.
Jupiter will be at mag -1.7; and Mercury will be at mag -0.3. Both objects will lie in the constellation Leo.
They will be close enough to fit within the field of view of a telescope, but will also be visible to the naked eye or through a pair of binoculars.
At around the same time, the pair will also share the same right ascension – called a conjunction.
A graph of the angular separation between Jupiter and Mercury around the time of closest approach is available here.
The positions of the pair at the moment of closest approach will be as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| Jupiter | 09h42m20s | 14°36'N | Leo | -1.7 | 30"5 |
| Mercury | 09h42m50s | 14°56'N | Leo | -0.3 | 5"7 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 20° from the Sun, which is in Cancer at this time of year.
The sky on 1 Oct 2024
| The sky on 1 October 2024 | ||||||||||||||||||||||||||||||||||
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0% 28 days old |
All times shown in EDT.
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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.
Related news
| 03 Apr 2003 | – Jupiter ends retrograde motion |
| 03 Jan 2004 | – Jupiter enters retrograde motion |
| 03 Mar 2004 | – Jupiter at opposition |
| 04 May 2004 | – 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.