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Visual observations Instr : 150mm / f15 Refractor ICQ Format Comet observations of : 21P/ Giacobini-Zinner IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxxx 21 1998 09 10.82 S 11.5 AA 15.0R15 141 1 1 ICQ XX DIE02 21 1998 10 15.78 S 9.5 AA 15.0R15 141 4 6 ICQ XX DIE02 21 1998 10 18.77 S 9.3 AA 15.0R15 141 4 6 ICQ XX DIE02 21 1998 11 11.73 S 9.3 AA 15.0R15 141 3 7 ICQ XX DIE02