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.
|Prefix||Example|| || |
|H||H V 79|| || |
|HJ||HJ 342||John Herschel|| |
|SHJ||SHJ 44||John Herschel/James South|| |