Datatype: UBVCCD

The UBV system has been reproduced by CCD cameras and filters, although the U quantum efficiency of many CCD chips is rather low. Therefore, the U filter is often not observed and the B and V filters are combined with the R and I filters.

Record structure

No:Star number
Ref:Data source
V:V magnitude
B-V:B-V colour index
U-B:U-B colour index

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Last Update: 15 February 1998