The globular cluster M15 (NGC 7078; mag 6.2) in Pegasus 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 12°10'N, it is easiest to see from the northern hemisphere; it can be seen at latitudes between 82°N and 57°S.
From Cambridge, it will be visible all night. It will become visible around 21:04 (EDT), 34° above your eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:48, 59° above your southern horizon. It will be lost to dawn twilight around 04:36, 32° above your western horizon.
At magnitude 6.3, M15 is quite faint, and certainly not visible to the naked eye, but can be viewed through a pair of binoculars or small telescope.
The position of M15 is as follows:
| Object | Right Ascension | Declination | Constellation | Magnitude | Angular Size |
| M15 | 21h29m50s | 12°10'N | Pegasus | 6.3 | 12'18" |
The coordinates above are given in J2000.0.
| The sky on 13 August 2020 | ||||||||||||||||||||||||||||||||||
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22% 24 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)