131P/Mueller 2 (1997)

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Updated on March 26, 1999

Profile Designation 131P/1997 M2 Recovery Date June 29, 1997, July 5, 1997 Magnitude 18.9 mag, 19.9 mag Recoverer A. Sugie (Dynic Astronomical Observatory), A. Nakamura (Kuma Kogen)

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 147 observations 1990 Sept. 15 to 1999 Feb. 14, perturbations by 9 Plantes, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.83 arc seconds. Epoch = 1997 Nov. 8.0 TT JDT = 2450760.5 T = 1997 Nov. 22.20835 +/- 0.00037 (m.e.) TT Peri. = 179.64060 +/- 0.00021 Node = 214.28496 +/- 0.00020 (2000.0) Incl. = 7.35544 +/- 0.00005 q = 2.4121430 +/- 0.0000034 AU e = 0.3438991 +/- 0.0000010 a = 3.6764819 +/- 0.0000020 AU n = 0.13981553 +/- 0.00000012 P = 7.049 +/- 0.0000059 years

Finding Charts 1996 June 6 - 1998 Mar. 8 1997 July 11 - 1999 May 22

Magnitudes Graph m1 = 9.3 + 5 log d + 20.0 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.