Mars and 134340 Pluto will share the same right ascension, with Mars passing 6°24' to the north of 134340 Pluto.
From Cambridge however, the pair will not be observable – they will reach their highest point in the sky during daytime and will be no higher than 14° above the horizon at dawn.
Mars will be at mag -0.1, and 134340 Pluto at mag 15.5, both in the constellation Capricornus.
A graph of the angular separation between Mars 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 |
| Mars | 21h37m50s | 16°19'S | Capricornus | -0.1 | 9"8 |
| 134340 Pluto | 21h37m50s | 22°44'S | Capricornus | 15.5 | 0"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 94° from the Sun, which is in Taurus at this time of year.
The sky on 17 May 2035
| The sky on 17 May 2035 | ||||||||||||||||||||||||||||||||||
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83% 10 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.