Mercury and 134340 Pluto will share the same right ascension, with Mercury passing 5°20' to the north of 134340 Pluto.
From Fairfield however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be 3° below the horizon at dawn.
Mercury will be at mag 0.1, and 134340 Pluto at mag 15.3, both in the constellation Capricornus.
A graph of the angular separation between Mercury and 134340 Pluto 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 |
| Mercury | 20h43m50s | 17°45'S | Capricornus | 0.1 | 7"3 |
| 134340 Pluto | 20h43m50s | 23°06'S | Capricornus | 15.3 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 26° from the Sun, which is in Aquarius at this time of year.
The sky on 24 Feb 2028
| The sky on 24 February 2028 | ||||||||||||||||||||||||||||||||||
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0% 29 days old |
All times shown in EST.
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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.