73P/Schwassmann-Wachmann 3 (1995)

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Updated on February 2, 1997

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Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 133 observations 1995 Oct. 7 to 1996 Nov. 19, perturbations by 9 Planets and 5 minor planets were taken into account. The mean residual is +/- 2.08 arc seconds. Epoch = 1995 Oct. 10.0 TT JDT = 2450000.5 T = 1995 Sept. 22.87476 +/- 0.00064 (m.e.) TT Peri. = 198.74610 +/- 0.00157 Node = 69.94844 +/- 0.00182 (2000.0) Incl. = 11.42388 +/- 0.00050 q = 0.9326558 +/- 0.0000279 AU e = 0.6947507 +/- 0.0000052 a = 3.0553907 +/- 0.0000753 AU n = 0.18454571 +/- 0.00000683 P = 5.341 +/- 0.0001976 years (+/- 0.07 day) Nuclear C The following improved orbital elements, by Kenji Muraoka, are from 226 observations 1989 to 1996, including 9 Planets, Moon and 5 minor planets perturbations and non-gravitational effect of style II. The mean residual is +/- 0.89 arc seconds. Epoch = 1995 Oct. 10.0 TT JDT = 2450000.5 T = 1995 Sept. 22.88978 +/- 0.00006 (m.e.) TT Peri. = 198.76927 +/- 0.00017 Node = 69.94661 +/- 0.00015 (2000.0) Incl. = 11.42389 +/- 0.00003 q = 0.9327815 +/- 0.0000005 AU e = 0.6948482 +/- 0.0000008 a = 3.0567786 +/- 0.0000027 AU n = 0.18442004 +/- 0.00000025 P = 5.344 +/- 0.0000071 years A1 = +0.923 +/- 0.016 A2 = +0.21829 +/- 0.00439 A3 = -0.204 +/- 0.009 Nuclear C The following improved orbital elements, by Kenji Muraoka, are from 191 observations 1994 Dec. 28 to 1996 Nov. 19, perturbations by 9 Planets, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.79 arc seconds. Epoch = 1995 Oct. 10.0 TT JDT = 2450000.5 T = 1995 Sept. 22.89089 +/- 0.00004 (m.e.) TT Peri. = 198.76836 +/- 0.00019 Node = 69.94839 +/- 0.00019 (2000.0) Incl. = 11.42387 +/- 0.00003 q = 0.9327852 +/- 0.0000026 AU e = 0.6948979 +/- 0.0000007 a = 3.0572892 +/- 0.0000055 AU n = 0.18437384 +/- 0.00000049 P = 5.346 +/- 0.0000143 years (+/- 0.01 day)

Finding Charts 1995 Jan. 3 - 1995 Nov. 29 1995 Oct. 10 - 1996 Dec. 3

Magnitudes Graph m1 = 11.5 + 5 log d + 18.0 log r [ , 0] ( - 1995 Sept.22) m1 = 5.8 + 5 log d + 10.0 log r [ 0,120] (1995 Sept.22 - 1996 Jan. 20) m1 = 2.5 + 5 log d + 30.0 log r [120, ] (1996 Jan. 20 - ) * Gray curve is: m1 = 11.5 + 5 log d + 18.0 log r

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.