Astrophysics (Index)About

Herschel Double Star Catalog

(series of early double star catalogs)

I use Herschel Double Star Catalog to indicate a series of published lists of double stars that William Herschel produced in the late 1700s and early 1800s. Designators based on these lists use an H followed by a Roman numeral that indicates the degree of separation-angle. Herschel was particularly interested in double stars as an aid in uncovering proper motion and parallax. James South and William's son John Herschel later reviewed and edited the list.

(catalog,stars,double stars)
Further reading:
HH V 79 
HJHJ 342John Herschel
SHJSHJ 44John Herschel/James South