118P/Shoemaker-Levy 4 (1997)

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Updated on July 26, 2009

Profile Designation 118P/1995 M1 Recovery Date June 22, 1995 Magnitude 21.9 mag Recoverer J. V. Scotti (Kitt Peak) Pictures

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 237 observations 1991 to 1998, perturbations by 9 Planets, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.75 arc seconds. Epoch = 1997 Feb. 1.0 TT JDT = 2450480.5 T = 1997 Jan. 12.11225 +/- 0.00025 (m.e.) TT Peri. = 301.97973 +/- 0.00013 Node = 152.09627 +/- 0.00012 (2000.0) Incl. = 8.47342 +/- 0.00001 q = 2.0211344 +/- 0.0000009 AU e = 0.4205115 +/- 0.0000002 a = 3.4877906 +/- 0.0000006 AU n = 0.15131378 +/- 0.00000004 P = 6.514 +/- 0.0000016 years

Finding Charts 1996 June 6 - 1997 July 1

Magnitudes Graph m1 = 8.2 + 5 log d + 18.0 log r [ ,-100] ( - 1996 Oct. 4) m1 = -6.0 + 5 log d + 60.0 log r [-100, 100] (1996 Oct. 4 - 1997 Apr. 22) m1 = 8.2 + 5 log d + 18.0 log r [ 100, ] (1997 Apr. 22 - ) * Gray curve is: m1 = 8.2 + 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.