Yale Observatory Zone Catalog
(YZ)
(mid-20th century catalogs totaling 400,000 stars)
The name Yale Observatory Zone Catalog is used for a series of
star catalog publications by Yale Observatory
from 1934 to 1983, which have been combined into a database of
400,000 stars.
(catalog,stars)
Further reading:
https://en.wikipedia.org/wiki/Yale_Observatory_Zone_Catalog
http://www.scientificlib.com/en/Astronomy/AstronomicalCatalogues/YaleObservatoryZoneCatalog.html
https://ui.adsabs.harvard.edu/abs/1997yCat.1141....0Y/abstract
https://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?YZ%2024
Index