CODED NUMBERING SYSTEME
TABLE 1
DEFINITION OF THE CODED NUMBERING SYSTEM
DURCHMUSTERUNG
-0.XAABBBBB   CPD   SOUTH OF -52 (1875)
-0.XAABBBBB   COD   NORTH OF -52 (1875)
-0.XAABBBBB   BD    NORTH OF -23 (1855)
+0.XAABBBBB   BD    NORTHERN HEMISPHERE
              AA # DECLINATION ZONE
              BBBBB # STAR NUMBER
              X # 1, 2, ETC. FOR FIRST, SECOND ,ETC. COMPONANT
              OF VISUAL MULTIPLE STARS HAVING ONLY ONE DM NUMBER
HD AND HDE CATALOGUES
+1.X0BBBBBB   HD AND HDE
              BBBBBB # HD- OR HDE NUMBER
              X # 1, 2, ETC. FOR FIRST, SECOND, ETC. COMPONANT
              OF VISUAL MULTIPLE STARS HAVING ONLY ONE HD- OR HDE
              NUMBER
OPEN AND GLOBULAR CLUSTERS
+2.XXXXBBBB   NGC CLUSTERS
+3.XXXXBBBB   IC  CLUSTERS
              XXXX # NGC OR IC NUMBER
              BBBB # STAR NUMBER ACCORDING TO AUTHORS QUOTED IN THE
              REFERENCE LIST IN TABLES 4 AND 5
+4.AAXXBBBB   CLUSTERS WITHOUT NGC OR IC IDENTIFICATION
              AA # CODE FOR NAME, ACCORDING TO TABLE 2
              XX # CLUSTER NUMBER ACCORDING TO THE NAME
+5.AXXXBBBB   CLUSTERS WITHOUT NGC OR IC IDENTIFICATION
              FOR LISTS CONTAINING MORE THAN 100 CLUSTERS
              A # CODE FOR NAME, ACCORDING TO TABLE 2
              XXX # CLUSTER NUMBER ACCORDING TO THE NAME
              BBBB # STAR NUMBER ACCORDING TO AUTHOR QUOTED
              IN THE REFERENCES LIST IN TABLES 6
VARIOUS CATALOGUES AND LISTS OF STARS
+6.0AABBBBB   CATALOGUES CONTAINING MORE THAN 10000 STARS
+6.1AAABBBB   CATALOGUES CONTAINING MORE THAN 1000 STARS
              AA, AAA # AUTHORS IDENTIFICATION ACCORDING
              TO THE REFERENCES LIST IN TABLE 7
              BBBBB, BBBB # STAR NUMBER
SELECTED AREAS
+7.AXXXBBBB   CODE FOR STARS IN SELECTED AREAS
              A # CATALOGUE IDENTIFICATION ACCORDING TO TABLE 8
              XXX # SELECTED AREA NUMBER
              BBBB # STAR NUMBER
MISCELLANOUS LISTS
+9.0AAABBBB   LISTS OF STARS IN ASSOCIATIONS
              AAA # CODE FOR ASSOCIATIONS (TABLE 3)
              BBBB # STAR NUMBER ACCORDING TO THE AUTHOR
              IN THE REFERENCES LIST IN TABLE 9
+9.5AYXXBBB   STANDARD REGIONS    (TABLE 9)
              A # IDENTIFICATION (TABLE 9)
              Y # 1-6 (A-F)
              XX # 01-09, REGION NUMBER
              BBB # STAR NUMBER
TABLE 2
NAME CODE FOR CLUSTERS IDENTIFICATION
+4.AAXXBBBB
              +4.09   BLANCO
              +4.21   HOGG
              +4.27   PISMIS
              +4.31   STOCK
              +4.35   TRUMPLER
+5.AXXXBBBB
              +5.1    COLLINDER
              +5.2    MELOTTE
TABLE 3
CODE OF SOME USUAL NUMBERING SYSTEMS
              +6.001   LUYTEN LTT NUMBERS
              +6.1001  GLIESE CATALOGUE OF NEARBY STARS
              +6.1003  YALE TRIGONOMETRICS PARALLAXES
              +7.4     POTSDAMER SPEKTRAL DURCHMUSTERUNG
              +9.0001  ORION NO BRUN
              +9.0004  RING ORI   NO ISSERSTEDT
              +9.0005  RING HYDRA NO ISSERSTEDT
              +9.0008  CLUSTER IN LINE OF SIGHT OF THE LMC
              +9.50    HARVARD STANDARD REGIONS