178P/Hug-Bell (1999)

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Updated on July 21, 2006

Profile Designation 178P/1999 X1 Discovery Date December 10, 1999 Magnitude 18.8 mag Discoverer Gary Hug, Graham E. Bell (Eskridge, KS)

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 88 observations 1999 Oct. 10 to 2000 Feb. 7, perturbations by 9 Planets, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.79 arc seconds. Epoch = 1999 July 1.0 TT JDT = 2451360.5 T = 1999 June 20.83784 +/--0.00256 (m.e.) TT Peri. = 296.91658 +/- 0.00078 Node = 103.65119 +/- 0.00075 (2000.0) Incl. = 10.96890 +/- 0.00043 q = 1.9367558 +/- 0.0002152 AU e = 0.4727865 +/- 0.0000464 a = 3.6735702 +/- 0.0002495 AU n = 0.13998179 +/- 0.00001426 P = 7.041 +/- 0.0007174 years (+/- 0.26 day)

Finding Charts

Magnitudes Graph m1 = 13.5 + 5 log d + 10.0 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.