The set ofdouble stars includes bothoptical double stars (akaoptical doubles) and truebinary stars (aka "physical double stars").
This subcategory page is only for listingoptical double stars.
Physical double stars should go in the subcategoryBinary stars. If a double star is known to have an optical component, or if it is not known to be physical, place it here.
Many stars have optical companions, and the set of criteria for what constitutes anoptical double star is not clear-cut. It is suggested that editors determine whether or not stars should be added to this category by consulting theWashington Double Star Catalog or a similar authoritative catalog of double and multiple stars.
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The following 200 pages are in this category, out of approximately 327 total.This list may not reflect recent changes.
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