If catpair is invoked with the option spcol=true then three special columns giving details of the pairing for each object will be included in the output catalogue. These columns are:
Usually fields in columns PMULT and SMULT will have a value of one for paired objects. However, in cases where there were multiple matches for the pair the values will be larger. See Section , below for a discussion of the handling of multiple matches.
CURSA Catalogue and Table Manipulation Applications