The database is updated weekly, or as new datasets are released for public use and are ingested into the archive. General Catalog of Variable Stars, 4th ed. R.J. Buta, P. Fouque, and G. Paturel, 1991. Users can browse the original database should they wish to examine ALL of the parameter fields for a particular entry. Figure 1 shows the number of times the On-line Service was accessed over the past two years.
Bin size is approximately one week.
Figure 2 shows the number of times each Observatory database was accessed in the past two years. Cosmic Journeys Part of the NASA OSS Structure and Evolution of the Universe theme.