Comet C/1998 P1 (Williams)

Aug. 20.25: m1 = 8.9:(+/-0.3) Dia. 2' , DC =4-6, 42x256 L, Wahiawa(HI)
Nov. 16.65: m1 = 9.6 (+/-0.3) Dia. 3' , DC = 5 , 42x256 L, Honolu.(HI)
Nov. 24.65: m1 = 9.5 (+/-0.2) Dia. 3' , DC = 6 , 42x256 L, Honolu.(HI)
Nov. 25.65: m1 = 9.0 (+/-0.1) Dia. 4' , DC = 7 , 7x50 B, HalePohaku(HI)
Nov. 26.65: m1 = 9.4 (+/-0.2) Dia. 4' , DC = 5 , 7x50 B, MaunaKea(HI)
Nov. 27.63: m1 = 9.2 (+/-0.2) Dia. 4' , DC = 6 , 42x256 L, Koko-H.(HI)
Nov. 27.64: m1 = 9.0:(+/-0.2) Dia. 4' , DC = 5 , 7x50 B, Koko-H.(HI)
Nov. 28.63: m1 = 9.3 (+/-0.2) Dia. 3' , DC = 6 , 42x256 L, Dilli. (HI)
Nov. 29.66: m1 = 9.3 (+/-0.2) Dia. 3.5', DC = 6 , 42x256 L, Honolu.(HI)
Nov. 30.64: m1 = 9.4 (+/-0.1) Dia. 3' , DC = 6 , 42x256 L, Honolu.(HI)
Dec. 01.65: m1 = 9.5 (+/-0.1) Dia. 3.0', DC = 6 , 42x256 L, Honolu.(HI)
Dec. 11.64: m1 = 9.8 (+/-0.2) Dia. 3.0', DC = 6 , 42x256 L, Honolu.(HI)
Dec. 12.64: m1 = 9.8 (+/-0.2) Dia. 3.0', DC = 6 , 42x256 L, Honolu.(HI)
Dec. 13.65: m1 = 9.7 (+/-0.2) Dia. 3.5', DC = 6 , 42x256 L, Honolu.(HI)
Dec. 14.59: m1 = 9.6 (+/-0.1) Dia. 4.0', DC = 5 , 42x256 L, Dilli. (HI)
Dec. 16.64: m1 = 9.7 (+/-0.2) Dia. 4.0', DC = 5 , 42x256 L, Koko-H.(HI)
Dec. 18.66: m1 = 9.7 (+/-0.1) Dia. 4.0', DC = 4 , 42x256 L, Honolu.(HI)
Dec. 19.61: m1 = 9.6 (+/-0.1) Dia. 4.0', DC = 5 , 42x256 L, Dilli. (HI)
Dec. 20.62: m1 = 9.7 (+/-0.1) Dia. 3.0', DC = 5 , 42x256 L, Honolu.(HI)
1999
Jan. 10.49: m1 = 9.9:(+/-0.2) Dia. 3.0', DC = 5 , 42x256 L, Dilli. (HI)
Jan. 12.47: m1 = 9.7 (+/-0.2) Dia. 4.5', DC = 5 , 42x256 L, Dilli. (HI)
Jan. 16.53: m1 = 9.4 (+/-0.2) Dia. 5.0', DC = 5 , 42x256 L, Dilli. (HI)
Jan. 17.47: m1 = 9.7 (+/-0.3) Dia. 4.0', DC = 5 , 42x256 L, Dilli. (HI)
Jan. 24.46: m1 = 9.9 (+/-0.1) Dia. 6.0', DC = 4 , 42x256 L, Dilli. (HI)
Jan. 27.61: m1 = 9.5 (+/-0.2) Dia. 7.0', DC = 4 , 42x256 L, Dilli. (HI)
Feb. 09.27: m1 = 9.6 (+/-0.2) Dia. 8' , DC = 3 , 7x50 B, HalePohaku(HI)
Feb. 13.34: m1 = 10.1 (+/-0.2) Dia. 5.0', DC = 4 , 42x256 L, Dilli. (HI)
Feb. 14.41: m1 = 10.1 (+/-0.2) Dia. 5.0', DC = 3 , 42x256 L, Dilli. (HI)
Feb. 15.50: m1 = 10.0 (+/-0.2) Dia. 7.0', DC = 3 , 42x256 L, Dilli. (HI)
Feb. 18.30: m1 = 10.6 (+/-0.1) Dia. 5.0', DC = 2 , 42x256 L, Koko-H.(HI)
Mar. 07.30: m1 = 11.1 (+/-0.2) Dia. 3.0', DC = 2 , 42x256 L, Dilli. (HI)
Mar. 09.31: m1 = 11.6 (+/-0.2) Dia. 3.0', DC = 2 , 84x256 L, Dilli. (HI)
Mar. 12.31: m1 = 11.9 (+/-0.1) Dia. 2.5', DC = 1 , 42x256 L, Dilli. (HI)
Mar. 14.27: m1 = 11.9 (+/-0.2) Dia. 2.0', DC = 1 , 42x256 L, Dilli. (HI)
Mar. 17.32: m1 = 12.1 (+/-0.2) Dia. 2.5', DC = 2 , 42x256 L, Dilli. (HI)
Mar. 23.43: m1 = 13.1:(+/-0.2) Dia. 1.5', DC = 1 , 84x256 L, Dilli. (HI)
Apr. 05.26: m1 = 12.6 (+/-0.1) Dia. 1.5', DC = 1 , 84x256 L, Dilli. (HI)
Apr. 08.28: m1 = 12.8 (+/-0.2) Dia. 1.5', DC = 2 , 84x256 L, Dilli. (HI)
Apr. 20.32: m1 = 13.3 (+/-0.2) Dia. 1.5', DC = 1 , 169x256 L, Dilli. (HI)

Quite low above the Waianae mountains in Aug... more condensed core well visible.
O-C(MPC32595): D(R.A.) = -0.1s (+-0.4s)
(24.64-Nov.98) D(Dec.) = +23" (+-6")
Nov. 25.64, from Hale-Pohaku (Mauna Kea, Hawaii): the comet is relatively small and condensed and was easily visible in the 7x50 B.
Nov. 26.8: D(Dec.) = +16" (+-2"), D(R.A.) < 5" at JCMT!
Nov. 27.64, m2 = 12.6(+/-0.2) (169x256 L), tails 9' PA 160 and 5' PA 270
O-C(MPC32595): D(R.A.) = +0.1s (+-0.4s) - m2 = 12.8(+/-0.2)
(01.67-Dec.98) D(Dec.) = +30" (+-7")

Images: [43 K] Nov. 27.6: Drawing at 42x (25.6cm L) 20'x20' South is up

[69 K] Jan. 17.5: Drawing at 42x (25.6cm L) 30'x30' South is up