Asterisms - Coat Hanger, Collinder 399

Original article appears in GuideStar August, 2021.

Posted: 2/18/2020
By: Steve Goldberg

Asterism: a grouping of stars that form a recognizable pattern.

Constellation: Vulpecula
Right Ascension: 19 h, 26 m 12s
Declination: 20o 06’ 00”
Magnitude:  3.6
Size: 60’ (minutes)

The “Coat Hanger” is a group of stars in the constellation Vulpecula, between Cygnus and Sagitta. It is easily located between the star Albireo in Cygnus and the 2 brightest stars in Sagitta: Alpha and Beta. This open cluster has the official names of Collinder 399 (CR 399) and OCL 113 (Open Cluster). ... click read more button


This object is seen easier in binoculars than with a telescope. And is a good object at public outreach events if you use binoculars.                                         




This object was featured on “Astronomy Picture of the Day” on Dec 23, 2008.

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