![\begin{definition}{24ex}
\par
\item[Double star name] The discoverer code and nu...
...the HD and ADS numbers
refer if they differ by component.
\par
\end{definition}](img8.png)
Some of the volumes of the Yale Zone Catalogues indicate that a star is in the ADS, some give ADS numbers in the notes, and some give other double star designations in the notes. Similarly, some of the later volumes give variable star names in the notes. The notes have been transcribed as printed, but, to make the final catalogue more uniform, the DM numbers have been used to search the WDS and the GCVS for stars listed in both this catalogue and one or both of the other catalogues. As noted above, records for the stars in common have either a W, a V, or a B in byte 10, and are listed in Files 8 and/or 9. The formats for these files follow. In File 8, the ADS field may be blank; no fields are blank in file 9.