Jupiter and 1 Ceres will share the same right ascension, with Jupiter passing 2°51' to the north of 1 Ceres.
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 11° above the horizon at dusk.
Jupiter will be at mag -2.0, and 1 Ceres at mag 9.2, both in the constellation Ophiuchus.
The pair will be too widely separated to fit within the field of view of a telescope, but will be visible through a pair of binoculars.
A graph of the angular separation between Jupiter and 1 Ceres 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 | 17h23m30s | 22°57'S | Ophiuchus | -2.0 | 33"1 |
| 1 Ceres | 17h23m30s | 25°49'S | Ophiuchus | 9.2 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 51° from the Sun, which is in Virgo at this time of year.
The sky on 23 Oct 2019
| The sky on 23 October 2019 | ||||||||||||||||||||||||||||||||||
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17% 25 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.
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| 28 Aug 2020 | – 1 Ceres at opposition |
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| 21 Mar 2023 | – 1 Ceres at opposition |
Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.