Mars and M8 will make a close approach, passing within a mere 40.4 arcminutes of each other.
From South El Monte , the pair will become visible at around 19:11 (PDT), 22° above your south-western horizon, as dusk fades to darkness. They will then sink towards the horizon, setting 3 hours and 29 minutes after the Sun at 21:40.
Mars will be at mag 0.8; and M8 will be at mag 5.8. Both objects will lie in the constellation Sagittarius.
They will be a little too widely separated to fit comfortably within the field of view of a telescope, but will be visible through a pair of binoculars.
A graph of the angular separation between Mars and M8 around the time of closest approach is available here.
The positions of the pair at the moment of closest approach will be as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| Mars | 18h03m40s | 25°03'S | Sagittarius | 0.8 | 5"9 |
| M8 | 18h03m40s | 24°22'S | Sagittarius | 5.8 | 45'00"0 |
The coordinates above are given in J2000.0. The pair will be at an angular separation of 60° from the Sun, which is in Virgo at this time of year.
The sky on 11 Sep 2025
| The sky on 11 September 2025 | ||||||||||||||||||||||||||||||||||
|
73% 19 days old |
All times shown in PDT.
|
|||||||||||||||||||||||||||||||||
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.
Image credit
The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.