103P/Hartley 2 (1997)

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Updated on March 17, 2006

Profile

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 491 observations 1986 to 1998, including 9 Planets, Moon and 5 minor planets perturbations and non-gravitational effect of style II. The mean residual is +/- 0.77 arc seconds. Epoch = 1997 Dec. 18.0 TT JDT = 2450800.5 T = 1997 Dec. 22.01730 +/- 0.00082 (m.e.) TT Peri. = 180.72204 +/- 0.00015 Node = 219.95453 +/- 0.00005 (2000.0) Incl. = 13.61888 +/- 0.00001 q = 1.0317219 +/- 0.0000002 AU e = 0.7003747 +/- 0.0000003 a = 3.4433739 +/- 0.0000012 AU n = 0.15425093 +/- 0.00000008 P = 6.390 +/- 0.0000033 years A1 = +0.161 +/- 0.013 A2 = +0.04189 +/- 0.00049

Finding Charts 1997 Apr. 2 - 1998 Feb. 16 1998 Jan. 27 - 1998 Aug. 15

Magnitudes Graph m1 = 8.2 + 5 log d + 20.0 log r(t - 20) [ ,120] ( - 1998 Apr. 21) m1 = 10.0 + 5 log d + 10.0 log r [120, ] (1998 Apr. 21 - )

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.