Mars and 1 Ceres will share the same right ascension, with Mars passing 5°56' to the south of 1 Ceres.
From Cambridge , the pair will be visible in the dawn sky, rising at 01:32 (EDT) and reaching an altitude of 31° above the southern horizon before fading from view as dawn breaks at around 05:38.
Mars will be at mag 1.0, and 1 Ceres at mag 8.7, both in the constellation Scorpius.
A graph of the angular separation between Mars 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 |
| Mars | 16h10m10s | 20°19'S | Scorpius | 1.0 | 6"0 |
| 1 Ceres | 16h10m10s | 14°23'S | Scorpius | 8.7 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 74° from the Sun, which is in Capricornus at this time of year.
The sky on 23 Jul 2024
| The sky on 23 July 2024 | ||||||||||||||||||||||||||||||||||
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91% 18 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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Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.