Messier 39

Messier 39 (M39) is a open cluster in the constellation Cygnus, with an apparent magnitude of 4.6. It is about 1,014 light-years away.

Free to use with credit: Atlas of the Sky (constellationmap.org), CC BY 4.0 · More

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<a href="https://constellationmap.org/messier/m39/"><img src="https://constellationmap.org/img/messier/m39-finder-chart.png" alt="Finder chart for Messier 39 in the constellation Cygnus" width="800" height="800" loading="lazy"></a>
<br><small><a href="https://constellationmap.org/messier/m39/">Messier 39</a> · Atlas of the Sky (constellationmap.org), <a href="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a></small>

Facts

Catalog	Messier 39 (M39)
Type	open cluster
Constellation	Cygnus
Apparent magnitude	4.6
Distance	about 1,014 light-years
Right ascension	21 h 31.8 min
Declination	+48.43°
Best month	September (at about 9 pm)

Sources: star positions, magnitudes and colors from the Yale Bright Star Catalogue; constellation boundaries and star names from the IAU; areas and distances from Wikidata; stick figures by M. van der Sluys. How the maps are made.

How to find M39

M39 is in Cygnus. From 40° N it is highest in the north in September evenings, about 82° up. From 35° S it reaches about 7° in the north. It is visible to the naked eye under a dark sky and easy in binoculars.

Cygnus constellation →

Other Messier objects in Cygnus

Messier 29 (M29)

The Messier catalog →

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Messier 39

Facts

How to find M39

Other Messier objects in Cygnus

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