Datatype: UBVCMD

This datatype is a combination of available UBV data, either average values or selection on the data sources, to plot colour-magnitude diagrams (CMD). The aim is to have in the file only one line per star, i.e. the best existing data.

Such a file has not been prepared for all clusters. It has been set up mostly when many sources of UBV data had to be combined. Otherwise, CM diagrams can be easily plotted from UBV pg or CCD data.

Record structure

No:Star number
Ref:Number of sources or references
V:V magnitude
B-V:B-V colour index
U-B:U-B colour index

Database access

List of clusters

Query the references

Last Update: 17 February 1998