Comet 141P/1999 P1 (Machholz 2)

Nucleus A:
1999:
Oct. 28.23: m1 = 14.4:(+/-0.1) Dia. 0.4', DC = 4, 169x256 L, Dilli. (HI)
Nov. 02.23: m1 = 14.0:(+/-0.2) Dia. 1.0', DC = 2, 84x256 L, Dilli. (HI)
Nov. 02.24: m1 = 14.1:(+/-0.2) Dia. 1.0', DC = 2, 169x256 L, Dilli. (HI)
Nov. 07.25: m1 = 13.6: Dia. 0.5', DC = 2, 169x256 L, Dilli. (HI)
Nov. 08.23: m1 = 13.8:(+/-0.2) Dia. 0.4', DC = 5, 169x256 L, Dilli. (HI)
Nov. 27.22: m1 = 11.6 (+/-0.2) Dia. 2.0', DC = 5, 84x256 L, Dilli. (HI)
Nov. 28.22: m1 = 12.1 (+/-0.2) Dia. 1.8', DC = 3, 84x256 L, Dilli. (HI)
Nov. 29.23: m1 = 11.9 (+/-0.2) Dia. 2.0', DC = 3, 84x256 L, Dilli. (HI)
Dec. 01.22: m1 = 11.6 (+/-0.2) Dia. 1.7', DC = 2, 84x256 L, Dilli. (HI)
Dec. 05.23: m1 = 11.9 (+/-0.2) Dia. 2.0', DC = 4, 84x256 L, Dilli. (HI)
Dec. 06.23: m1 = 11.4 (+/-0.2) Dia. 2.5', DC = 5, 84x256 L, Dilli. (HI)
Dec. 09.28: m1 = 10.9 (+/-0.3) Dia. 2.5', DC = 5, 84x256 L, Dilli. (HI)
Dec. 14.23: m1 = 11.0 (+/-0.2) Dia. 2.5', DC = 5, 84x256 L, Dilli. (HI)
Dec. 29.26: m1 = 10.1 (+/-0.2) Dia. 4.0', DC = 4, 42x256 L, Dilli. (HI)
Dec. 30.25: m1 = 9.8 (+/-0.1) Dia. 5.0', DC = 4, 42x256 L, Dilli. (HI)
2000:
Jan. 01.26: m1 = 9.5 (+/-0.2) Dia. 6' , DC = 3, 7x50 B,Hale-Po.(HI)
Jan. 02.28: m1 = 9.3 (+/-0.2) Dia. 7' , DC = 4, 7x50 B,MaunaKea(HI)
Jan. 03.25: m1 = 9.3 (+/-0.1) Dia. 6' , DC = 3, 7x50 B,MaunaKea(HI)
Jan. 04.26: m1 = 9.5 (+/-0.1) Dia. 6' , DC = 3, 7x50 B,MaunaKea(HI)
Jan. 06.23: m1 = 9.5 (+/-0.2) Dia. 7' , DC = 3, 42x256 L, Dilli. (HI)
Jan. 07.25: m1 = 10.0 (+/-0.2) Dia. 6.5', DC = 3, 42x256 L, Dilli. (HI)
Jan. 07.25: m1 = 9.9 (+/-0.3) Dia. 7' , DC = 4, 7x50 B, Dilli. (HI)
Jan. 10.3 : m1 = 9.8 (+/-0.3) Dia. 8' , DC = 2, 7x50 B,MaunaKea(HI)
Jan. 12.22: m1 = 10.4 (+/-0.1) Dia. 6.0', DC = 2, 42x256 L, Dilli. (HI)
Jan. 23.24: m1 = 11.7 (+/-0.2) Dia. 4.0', DC = 1, 42x256 L, Dilli. (HI)
Jan. 25.24: m1 = 11.7 (+/-0.2) Dia. 4.0', DC = 1, 42x256 L, Dilli. (HI)
Jan. 26.27: m1 = 11.8 (+/-0.2) Dia. 4.5', DC = 1, 42x256 L, Dilli. (HI)
Jan. 29.23: m1 = 12.2 (+/-0.1) Dia. 3.0', DC = 1, 42x256 L, Dilli. (HI)
Jan. 30.27: m1 = 12.2 (+/-0.2) Dia. 3.0', DC = 1, 42x256 L, Dilli. (HI)
Feb. 01.31: m1 = 12.5 (+/-0.1) Dia. 3.0', DC = 1, 42x256 L, Dilli. (HI)
Feb. 03.30: m1 = 12.7 (+/-0.1) Dia. 2.5', DC = 1, 42x256 L, Dilli. (HI)
Feb. 05.31: m1 = 13.0 (+/-0.2) Dia. 2.0', DC = 1, 42x256 L, Dilli. (HI)
Feb. 06.35: m1 = 13.4 (+/-0.2) Dia. 1.5', DC = 1, 84x256 L, Dilli. (HI)
Feb. 08.40: m1 = 13.3:(+/-0.3) Dia. 1.0', DC = 1, 84x256 L, Dilli. (HI)

Nucleus D:
1999:
Nov. 07.24: m1 = 12.3 (+/-0.2) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Nov. 08.22: m1 = 12.5 (+/-0.2) Dia. 1.3', DC = 2, 84x256 L, Dilli. (HI)
Nov. 14.25: m1 = 12.1 (+/-0.2) Dia. 1.3', DC = 2, 84x256 L, Dilli. (HI)
Nov. 15.23: m1 = 12.2:(+/-0.2) Dia. 1.3', DC = 2, 84x256 L, Dilli. (HI)
Nov. 15.23: m1 = 12.2:(+/-0.2) Dia. 1.3', DC = 2, 84x256 L, Dilli. (HI)
Nov. 26.22: m1 = 12.4:(+/-0.3) Dia. 1.5', DC = 2, 84x256 L, Dilli. (HI)
Nov. 27.22: m1 = 12.3 (+/-0.2) Dia. 1.2', DC = 2, 84x256 L, Dilli. (HI)
Nov. 28.22: m1 = 12.6 (+/-0.2) Dia. 1.2', DC = 2, 84x256 L, Dilli. (HI)
Nov. 29.23: m1 = 12.5 (+/-0.3) Dia. 1.0', DC = 2, 84x256 L, Dilli. (HI)
Dec. 01.23: m1 = 12.5 (+/-0.2) Dia. 1.2', DC = 2, 84x256 L, Dilli. (HI)
Dec. 05.22: m1 = 12.4 (+/-0.2) Dia. 1.2', DC = 3, 84x256 L, Dilli. (HI)
Dec. 06.23: m1 = 13.0 (+/-0.2) Dia. 1.0', DC = 2, 84x256 L, Dilli. (HI)
Dec. 14.25: m1 = 12.8 (+/-0.2) Dia. 1.0', DC = 3, 169x256 L, Dilli. (HI)
Dec. 29.27: m1 = 13.2:(+/-0.2) Dia. 0.8', DC = 2, 169x256 L, Dilli. (HI)
Dec. 30.26: m1 = 13.4:(+/-0.2) Dia. 1.0', DC = 2, 169x256 L, Dilli. (HI)
2000:
Jan. 07.26: m1 > 12.9 (Dia. 1'), 84x256 L, Dilli. (HI)
Jan. 25.28: m1 > 13.5 (Dia. 1'), 84x256 L, Dilli. (HI)

Oct. 28: There was definitely something within 1' of the predicted position of the comet, and no group of stars brighter than m=16 on the DSS at this position. Good sky, faintest star nearby of mag 15.2-15.4.
Nov. 02: The comet is still very difficult ("3 sigma" detection), but was right (within 15") at the predicted position, with no background stars as seen from the DSS. About component D (cf. IAUC 7299), I cannot say either yes or no, as I think I once suspected something in its direction, but did not confirm/insisted on it (m1 >13).
Nov. 27: Weather was a bit better than yesterday (less cirrus), and, although there may have been a few 15-16th magnitude stars there, component A seemed this time clearly more visible than D (rather diffuse), elongated and more conmdensed (seen without problems).