Comet 88P/Howell

2004 :
Aug. 14.08: m1 = 13.0 (+/-0.2) Dia.= 1.6', DC= 3, 116x407 L, Valdrome(F)
Aug. 15.02: m1 = 12.7 (+/-0.2) Dia.= 2.0', DC= 3, 58x407 L, Valdrome(F)
Aug. 16.03: m1 = 13.0 (+/-0.2) Dia.= 2.0', DC= 3, 58x407 L, Valdrome(F)
Sep. 17.12: m1 = 12.9 (+/-0.1) Dia.= 1.8', DC= 3, 116x407 L, Ablis (F)

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1998-1999 :
July 25.31: m1 = 12.3 (+/-0.2) Dia. 1.5', DC = 3, 84x256 L, Silva (HI)
July 26.31: m1 = 12.1 (+/-0.2) Dia. 2.0', DC = 2, 42x256 L, Dilli. (HI)
Aug. 11.28: m1 = 12.2 (+/-0.2) Dia. 2.0', DC = 2, 42x256 L, Koko-H.(HI)
Aug. 12.27: m1 = 11.8 (+/-0.2) Dia. 2.5', DC = 2, 42x256 L, Koko-H.(HI)
Aug. 15.28: m1 = 11.5 (+/-0.2) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Aug. 16.30: m1 = 11.1 (+/-0.3) Dia. 3.0', DC = 2, 42x256 L, Dilli. (HI)
Aug. 19.30: m1 = 11.3:(+/-0.3) Dia. 2.5', DC = 2, 42x256 L, Koko-H.(HI)
Aug. 20.29: m1 = 11.4 (+/-0.2) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Aug. 24.28: m1 = 11.0 (+/-0.3) Dia. 3.0', DC = 2, 42x256 L, Dilli. (HI)
Sep. 08.24: m1 = 10.6 (+/-0.2) Dia. 3.5', DC = 4, 42x256 L, Kahe-P.(HI)
Sep. 11.25: m1 = 10.3 (+/-0.1) Dia. 4.5', DC = 3, 42x256 L, Dilli. (HI)
Sep. 13.25: m1 = 10.4 (+/-0.2) Dia. 4.5', DC = 3, 42x256 L, Dilli. (HI)
Sep. 15.27: m1 = 10.2 (+/-0.2) Dia. 4.0', DC = 3, 42x256 L, Dilli. (HI)
Sep. 18.26: m1 = 10.2 (+/-0.1) Dia. 4.0', DC = 3, 42x256 L, Dilli. (HI)
Sep. 19.26: m1 = 10.4 (+/-0.2) Dia. 4.0', DC = 3, 42x256 L, Silva (HI)
Sep. 20.25: m1 = 10.4 (+/-0.2) Dia. 4.0', DC = 3, 42x256 L, Dilli. (HI)
Sep. 24.25: m1 = 10.3 (+/-0.2) Dia. 4.0', DC = 3, 42x256 L, Koko-H.(HI)
Sep. 27.25: m1 = 9.9:(+/-0.2) Dia. 3.5', DC = 3, 42x256 L, Honol. (HI)
Oct. 08.23: m1 = 9.7 (+/-0.2) Dia. 4.5', DC = 3, 42x256 L, Dilli. (HI)
Oct. 09.23: m1 = 9.8 (+/-0.2) Dia. 4.0', DC = 4, 42x256 L, Dilli. (HI)
Oct. 18.24: m1 = 10.1 (+/-0.2) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Oct. 20.24: m1 = 10.2 (+/-0.3) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Oct. 23.26: m1 = 10.0 (+/-0.2) Dia. 3.5', DC = 2, 42x256 L, Dilli. (HI)
Nov. 07.21: m1 = 10.7 (+/-0.2) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Nov. 21.22: m1 = 10.8 (+/-0.2) Dia. 3.0', DC = 2, 42x256 L, Dilli. (HI)
Nov. 22.26: m1 = 10.9 (+/-0.2) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Nov. 23.28: m1 = 11.0 (+/-0.2) Dia. 3.0', DC = 3, 42x256 L, Dilli. (HI)
Dec. 06.22: m1 = 11.2 (+/-0.2) Dia. 3.0', DC = 2, 42x256 L, Dilli. (HI)
Dec. 11.21: m1 = 11.2 (+/-0.2) Dia. 2.5', DC = 2, 42x256 L, Dilli. (HI)
Dec. 14.22: m1 = 11.4 (+/-0.1) Dia. 3.0', DC = 2, 42x256 L, Dilli. (HI)
Dec. 17.23: m1 = 11.6 (+/-0.1) Dia. 2.0', DC = 1, 42x256 L, Dilli. (HI)
Dec. 19.21: m1 = 11.6 (+/-0.3) Dia. 2.0', DC = 2, 42x256 L, Dilli. (HI)
Dec. 20.24: m1 = 11.7:(+/-0.2) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
1999:
Jan. 10.27: m1 = 12.1:(+/-0.3) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Jan. 12.24: m1 = 12.1 (+/-0.2) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Jan. 14.26: m1 = 12.6 (+/-0.2) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Jan. 16.25: m1 = 12.5 (+/-0.1) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Jan. 17.26: m1 = 12.4 (+/-0.2) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Comments:
May 25.3 and 26.5: the comet was probably marginally seen around m1 = 14, dia. 1' DC = 2, (169x256 L. Dilli. ).
After several not very successful attemps in May and June (m1 > 13.5), the comet is now clearly visible, though rather diffuse.
Sep. 07.24: the comet was already easily seen around m1 = 10.5 (42x256 L, Kahe-P.(HI)), between twilight and moonrise.

Images: [29 K] Sep. 11.5: Drawing at 42x (25.6cm L) 20'x20' South is up