The Andromeda galaxy (M31; mag 4.4) will be well placed, high in the sky. It will reach its highest point in the sky at around midnight local time.
At a declination of +41°16', it is easiest to see from the northern hemisphere but cannot be seen from latitudes much south of 28°S.
From Ashburn, it will be visible all night. It will become visible around 19:55 (EDT) as the dusk sky fades, 31° above your north-eastern horizon. It will then reach its highest point in the sky at 01:12, 87° above your northern horizon. It will be lost to dawn twilight around 06:06, 35° above your north-western horizon.
At magnitude 3.4, M31 is tricky to make out with the naked eye except from a dark site, but is visible through a pair of binoculars or small telescope.
The position of M31 is as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| M31 | 00h42m40s | +41°16' | Andromeda | 3.4 | 190'00" |
The coordinates above are given in J2000.0.
| The sky on 01 October 2020 | ||||||||||||||||||||||||||||||||||
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99% 14 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.
Image credit
© Digitised Sky Survey (DSS); Second Palomar Observatory Sky Survey (POSS-II)