NGC 6193 (also known as Caldwell 82) is
open cluster
An open cluster is a type of star cluster made of tens to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way galaxy, and ...
containing 27 stars in the
constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms Asterism (astronomy), a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
The first constellati ...
Ara, visible to the unaided eye.
[
] NGC 6193 lies at the center of the Ara OB1 association, which extends over a square degree. The cluster is associated with (and provides the energizing radiation for) neighboring regions of the nebulosity
NGC 6188.
Cluster members
NGC 6193 is dominated by two O class multiple star systems within 10" of each other at the centre of the cluster, and a probable binary B0 giant. There are at least 20 other early B stars in the cluster, of 9th and 10th magnitude.
Image gallery
Star cluster NGC 6193 and nebula NGC 6188.jpg, Star cluster NGC 6193 and nebula NGC 6188.
References
External links
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Universität Wien Plot of stars in NGC 6193
WEBDA
Universität Wien IDs of stars in NGC 6193
WEBDA
Entry for NGC 6193
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Aladin Image of NGC 6193, centered on HD 150136
{{DEFAULTSORT:NGC 6193
Ara (constellation)
Open clusters
6193
082b