* * * * * 50P/Arend * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2008 1 4.50 S 14.6 UV 40.0L 257 0.4 6 YOS Mt. Hanadate, Ibaraki (Unexpectedly, the small, strongly condensed object was still visible.) 2007 12 11.819 S 14.5:HN 31.0J 155 0.5 5 BOU Lauwersoog (Very faint, small somewhat condensed object seen near expected position. Checked versus DSS image. No unambiguous motion detected over 40m period, because comet moved very slowly (11"/h); session terminated by incoming low cloud from the North Sea. Comparison stars used from Henden sequence of GK Per.) 2007 12 9.48 S[15.3 40.0L 257 !0.3 YOS Kita-karuizawa, Gunma (Comparison stars from USNO-A2.0, preliminary V magnitude calculated from R and B magnitude.) 2007 12 8.65 S 15.0 40.0L 257 0.4 3/ YOS Kita-karuizawa, Gunma (I could see it with an excellent clear sky. Very faint and small. Comparison stars from USNO-A2.0, preliminary V magnitude calculated from R and B magnitude.) 2007 10 6.65 S[14.3 HS 40.0L 257 !0.4 YOS Kita-karuizawa, Gunma 2007 10 5.73 S[14.2 HS 40.0L 257 !0.4 YOS Kita-karuizawa, Gunma (I could see 15 mag stars, but the comet was not visible.)