Mars and Neptune will share the same right ascension, with Mars passing 25' to the north of Neptune.

At around the same time, the two objects will also make a close approach, technically called an appulse.

From Los Angeles , the pair will be visible in the dawn sky, rising at 02:17 (PDT) – 3 hours and 21 minutes before the Sun – and reaching an altitude of 25° above the eastern horizon before fading from view as dawn breaks at around 04:27.

Mars will be at mag 0.8, and Neptune at mag 7.9, both in the constellation Aries.

The pair will be close enough to fit within the field of view of a telescope, but will also be visible through a pair of binoculars.

A graph of the angular separation between Mars and Neptune around the time of closest approach is available here.

The positions of the two objects at the moment of conjunction will be as follows:

The coordinates above are given in J2000.0. The pair will be at an angular separation of 58° from the Sun, which is in Gemini at this time of year.

The sky on 6 May 2025

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.

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