![]() ![]() ![]() ![]() In both of these cases (long-period comets and one-apparition short-period comets), the year-and-halfmonth designation goes in columns 4-9 (columns 4-7 contain the year column 8 contains the capitalized halfmonth letter and column 9 contains the halfmonth numeral).Ĭolumn 11 contains a lower-case letter denoting nuclear components if such exist (even though such letters are usually given in text form as upper-case letters), and this column is so used for all such split comets in the case of the rare numbered split comets (such as 73P) where more than 26 components were discovered (thus, the components went from "Z" to "AA"), the two letters should go in columns 10 and 11 (if we ever get to the situation where a comet with a year/letter designation spilling over into column 10 has more than 26 components, we will address the problem at that time).Ĭolumns 1-3 are used for "numbered" short-period comets (those seen at two or more returns to perihelion) this number is to be given "flush right".Īll comet designations can be found 1 2 3 4 5 6 7 8 9 10 11 For one-apparition short-period comets, columns 1 and 2 are blank, and column 3 contains a capitalized "P". The first three columns are blank for long-period comets. The first 10 columns are for the comet's identification. Were added beyond column 80, beginning 2002 January 1, to add additional information for CCD photometry ofĬomets. This format was established by ICQ in 1995 to accomodate the new designation scheme for comets. Bellow is the 80-column ICQ observation format that is used for storing and displaying observations at COBS ![]()
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