© Digitised Sky Survey (DSS); Second Palomar Observatory Sky Survey (POSS-II)

Messier 101 is well placed

Dominic Ford, Editor
From the Deep Sky feed

Objects: M101
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The Pinwheel Galaxy M101 (NGC 5457; mag 7.9) in Ursa Major will be well placed in the evening sky in coming weeks. On 22 April it will reach its highest point in the sky at around midnight local time, and on subsequent evenings it will culminate four minutes earlier each day.

From San Diego , it is visible all night. It will become visible at around 20:25 (PDT), 40° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 00:48, 68° above your northern horizon. It will be lost to dawn twilight at around 05:06, 40° above your north-western horizon.

At a declination of 54°20'N, it is easiest to see from the northern hemisphere but cannot be seen from latitudes much south of 15°S.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

At magnitude 7.9, M101 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 M101 is as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
M101 14h03m10s 54°20'N Ursa Major 7.9 0'00"

The coordinates above are given in J2000.0.

The sky on 22 Apr 2020

The sky on 22 April 2020
Twilight ends
Twilight begins

29-day old moon
Waxing Crescent


29 days old

Rise Culm. Set
Mercury 05:41 11:59 18:17
Venus 08:12 15:33 22:53
Moon 06:13 12:40 19:13
Mars 02:42 07:58 13:14
Jupiter 01:31 06:37 11:43
Saturn 01:49 06:58 12:07
All times shown in PDT.


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)


San Diego



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