Home      Calendar      About OCA      E Zine      Resources      Image Gallery      Members
    www.ocastronomers.org/ gallery/ htm-mess /




Prev M



Next M



Index



Prev Oth



Next Oth

Messier Gallery






No image available





M40 (Winnecke 4), a double star in Ursa Major.

M40 is the double star known as Winnecke 4. Messier is said to have been looking for a nebula reported by the 17th-century astronomer Hevelius. However, Messier apparently looked in the wrong place, saw Winnecke 4, thought it matched Helvelius' description, and catalogued it as M40.


Return to OCA Image Gallery Index | Return to OCA Home Page