Help keep this category in order. On pages that categorize here, modify [[Category:Durchmusterung objects]] as follows:
For BD objects: Use [[Category:Durchmusterung objects|BDZZZ NNNN]], where ZZZ is a sign (+ or -) followed by a two-digit declination (with leading zero if applicable), and NNNN is a four-digit number (with leading zeroes if necessary). For example, "BD-01 0004" or "BD+35 4290".
For CD objects: Use [[Category:Durchmusterung objects|CD-ZZ NNNNN]], where ZZ is a two-digit declination, and NNNNN is a five-digit number (with leading zeroes if necessary). For example, "CD-03 00004" or "CD-31 19142".
For CP or CPD objects: Use [[Category:Durchmusterung objects|PD-ZZ NNNNN]], where ZZ is a two-digit declination, and NNNNN is a five-digit number (with leading zeroes if necessary). For example, "PD-55 10147" or "PD-73 02296".