Comet C/2018 W1 (Catalina)

IIIYYYYMnL YYYY MM DD.DD eM/mm.m:r AAA.ATF/xxxx /dd.ddnDC /t.ttmANG ICQ XX*OBSxxf InT APERTURcamchip SFW C ## u.uu xx.x PIXELSIZE
   2018W1  2018 12 24.07  C 18.9 AQ 43.1L 4a360   0.18              ICQ XX YOS02I a 60C 0.2 mFL6 K6F SI6 5         12.9  1.9s 1.9 Katsumi Yoshimoto; B-V of comp. stars were +0.61, +0.68 and +0.76.