121P/Shoemaker-Holt 2 (1996)

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Updated on September 23, 2004

Profile Designation 121P/1995 Q3 Recovery Date August 29, 1995 Magnitude 21.1 mag Recoverer J. V. Scotti (Kitt Peak)

Orbital Elements The following improved orbital elements, by Kenji Muraoka, are from 172 observations 1989 Mar. 4 to 1997 July 3, perturbations by 9 Planets, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.68 arc seconds. Epoch = 1996 Aug. 25.0 TT JDT = 2450320.5 T = 1996 Aug. 20.04879 +/- 0.00127 (m.e.) TT Peri. = 6.12769 +/- 0.00027 Node = 99.71990 +/- 0.00009 (2000.0) Incl. = 17.69675 +/- 0.00002 q = 2.6643001 +/- 0.0000010 AU e = 0.3367287 +/- 0.0000002 a = 4.0169084 +/- 0.0000005 AU n = 0.12242389 +/- 0.00000002 P = 8.051 +/- 0.0000016 years

Finding Charts 1995 June 2 - 1997 July 1

Magnitudes Graph m1 = -2 + 5 log d + 35 log r(t - 145)

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.