ubv manipulate the UBV photoelectric data
corresponding to the data type ubv. The UBV
data are contained in the file ubv.peo.
The command ubv presents
options common to all commands
and offers additional options to get mean value,
references and perform selections.
The similar commands
pgh,
ccd,
cam,
sit manipulate the other related
data types.
The various possibilities offered by the command ubv are: