Dictionary of Nomenclature of Celestial Objects

on 728 physical multiple stars of multiplicity 3 to 7.
The format is based on 1900 coordinates, and follows the scheme of the IDS catalog.
Formats HHMMm+DDMM, HHMMm+DDMMAA, HHMMm+DDMMAaa, HHMMm+DDMMAaaa and HHMMm+DDMMAaaaa are used for systems and sub-systems.
Formats HHMMm+DDMMA and HHMMm+DDMMAa are used for individual components of the systems or sub-systems.

2018ApJS..235....6T:
The updated Multiple Star Catalog (MSC) contains data for over 2000 multiple systems. The format is based on J2000 coordinates, and follows the designation scheme of the WDS catalog.
Formats JHHMMm+DDMM, JHHMMm+DDMMAA, JHHMMm+DDMMA,AA, JHHMMm+DDMMAA,A, JHHMMm+DDMMAA,AA, JHHMMm+DDMMA,Aa, JHHMMm+DDMMAa,Aa, JHHMMm+DDMMAa,AaN, JHHMMm+DDMMAaN,Aa, JHHMMm+DDMMAaN,AaN, JHHMMm+DDMMAaa,Aa, and JHHMMm+DDMMAa,Aaa are used for systems and subsystems. Formats JHHMMm+DDMMA, JHHMMm+DDMMAa, and JHHMMm+DDMMAaN are used for individual components.

Ref:=1997A&AS..124...75T
byTOKOVININ A.A.
 Astron. Astrophys., Suppl. Ser., 124, 75-84 (1997)
  MSC - a catalogue of physical multiple stars.
oCatalog: <PMSC HHMMm+DDMM> N=728. systems: <PMSC HHMMm+DDMMA>, <PMSC HHMMm+DDMMAA>, <PMSC HHMMm+DDMMAa>, <PMSC HHMMm+DDMMAaa>, <PMSC HHMMm+DDMMAaaa>, <PMSC HHMMm+DDMMAaaaa>.
Ref:=2018ApJS..235....6T
byTOKOVININ A.
 Astrophys. J., Suppl. Ser., 235, 6-6 (2018)
  The updated Multiple Star Catalog.
o<PMSC JHHMMm+DDMM> N=2689. <PMSC JHHMMm+DDMMA>, <PMSC JHHMMm+DDMMAN>, <PMSC JHHMMm+DDMMAa>, <PMSC JHHMMm+DDMMAaN>, <PMSC JHHMMm+DDMMAA>, <PMSC JHHMMm+DDMMA,AA>, <PMSC JHHMMm+DDMMAA,A>, <PMSC JHHMMm+DDMMAA,AA>, <PMSC JHHMMm+DDMMA,Aa>, <PMSC JHHMMm+DDMMAa,Aa>, <PMSC JHHMMm+DDMMAN,Aa>, <PMSC JHHMMm+DDMMAaN,AaN>, <PMSC JHHMMm+DDMMAaa,Aa>, <PMSC JHHMMm+DDMMAa,Aaa>.
=E=Catalogue in electronic form as <J/A+AS/124/75/>
=E=Catalogue in electronic form as <J/ApJS/235/6/>

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