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Westerhout 40

W40, Sh2-64, LBN 90

Proper NamesNone
Messier NumberNone
NGC/IC NumberNone
Other DesignationsWesterhout 40, W40, Sh2-64, LBN 90
Right Ascension18h 31m 27s
Declination-2° 4' 22"
Distancec.4,600 light years
c.1,400 parsecs
MagnitudeNot recorded
DimensionsApparent: 20' x 8'
Actual: 8 x 3 light years
Optimum VisibilityJuly
NotesWesterhout 40 is notable as one of the closest star-forming regions to the Solar System, at a distance of a little over 1,400 light years. Within its clouds of ionised hydrogren, a populous cluster of some five hundred hot young stars is in the proccess of emerging from the surrounding gases.

A view of the newly-formed cluster of stars at the heart of the swirling gases within the Westerhout 40 stellar nursery. Imagery provided by Aladin sky atlas


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