141P/Machholz 2 (1999)

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Updated on September 29, 2004

Profile Designation 141P/1999 P1 Recovery Date August 3, 1999 Magnitude 20.8 mag Recoverer R. H. McNaught Pictures

Orbital Elements Comet 141P/Machholz 2 ( Nucleus A ) The following improved orbital elements by Kenji Muraoka, are from 234 observations 1994 to 2000, including 9 Planets, Moon and 5 minor planets perturbations and non-gravitational effect of style II. The mean residual is +/- 0.83 arc seconds. Epoch = 1999 Dec. 8.0 TT JDT = 2451520.5 T = 1999 Dec. 9.27438 +/- 0.00006 (m.e.) TT Peri. = 149.30205 +/- 0.00018 Node = 246.13618 +/- 0.00013 (2000.0) Incl. = 12.81126 +/- 0.00003 q = 0.7489322 +/- 0.0000005 AU e = 0.7510566 +/- 0.0000006 a = 3.0084442 +/- 0.0000025 AU n = 0.18888225 +/- 0.00000024 P = 5.218 +/- 0.0000065 years A1 = +0.504 +/- 0.020 A2 = -0.19475 +/- 0.00325 Comet 141P/Machholz 2 ( Nucleus D ) The following improved orbital elements by Kenji Muraoka, are from 114 observations 1994 to 1999, including 9 Planets, Moon and 5 minor planets perturbations and non-gravitational effect of style II. The mean residual is +/- 1.09 arc seconds. Epoch = 1999 Dec. 8.0 TT JDT = 2451520.5 T = 1999 Dec. 9.95662 +/- 0.00025 (m.e.) TT Peri. = 149.29339 +/- 0.00088 Node = 246.13491 +/- 0.00040 (2000.0) Incl. = 12.81195 +/- 0.00012 q = 0.7489913 +/- 0.0000037 AU e = 0.7510778 +/- 0.0000081 a = 3.0089376 +/- 0.0000331 AU n = 0.18883579 +/- 0.00000311 P = 5.219 +/- 0.0000861 years A1 = +1.605 +/- 0.146 A2 = +0.42056 +/- 0.04229

Finding Charts

Magnitudes Graph m1 = 14 + 5 log d + 20 log r(t - 10) Component A: m1 = 14 + 5 log d + 20 log r(t - 10) Component D: m1 = 18.5 + 5 log d + 55 log r(t + 20)

The orbital elements are calculated by Kenji Muraoka. The charts are made with StellaNavigator Ver.2.0 for Windows (AstroArts / ASCII). The magnitudes graphs are made with Comet for Windows.