How to Find Messier 109

How to Find Messier 109


Messier 109 is a barred spiral galaxy estimated to be around 85 million light years away. It was discovered by Mechain in March 1781, but wasn't included in  the original catalog. It was later added in 1953. This galaxy produces ultra-high energy cosmic rays which makes it ideal for studying where cosmic rays come from. It had a supernova event in 1956 which reached around 12.5 magnitude.

Image credit: Hewholooks

Telescopic Image to Scale:


This image is the size of a full moon for size comparison.

Other Names:

Messier 109

M 109

NGC 3992

UGC 6937

PGC 37617


Magnitude = 10.6

Surface brightness = 13.5

Telescope Aperture City Suburbs Rural Dark Sky
4 inches 9 10 11 12.5
5 inches 9.5 10.5 11.5 13
6 inches 10 11 12 13.5
8 inches 10.5 11.5 12.5 14
10 inches 11 12 13 14.5

Use this chart to estimate if you can see the object from your location with your telescope. For more help on using this chart click here.

How to Find It:

This galaxy resides in the constellation of Ursa Major and is in the crosshairs on the map below of the Big Dipper asterism. It's co-ordinates are: RA 11h 58m 17 DEC +53° 17′ 51.3″ if you are using guiding software.

How to find Messier 109

To find more space objects have a look at the constellation guide by clicking the link or go back to the list of deep space objects.

 Privacy policy and cookies | Disclaimer | Contact Us | Credits | Resources | Site Map © 2012-2014