P/1999 D1 ( Hermann )

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Updated on July 11, 1999

Profile Discovery Date February 20, 1999 Magnitude 18.4 mag Discoverer S. M. Hermann (Lowell Observatory) Pictures

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 96 observations 1999 Feb. 15 to Mar. 26, perturbations by 9 Planets, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.79 arc seconds. Epoch = 1999 Mar. 3.0 TT JDT = 2451240.5 T = 1999 Feb. 18.00434 +/- 0.00520 (m.e.) TT Peri. = 173.08259 +/- 0.00661 Node = 349.37290 +/- 0.00702 (2000.0) Incl. = 21.51265 +/- 0.00422 q = 1.6542746 +/- 0.0016780 AU e = 0.7124168 +/- 0.0001946 a = 5.7523334 +/- 0.0043474 AU n = 0.07143943 +/- 0.00008099 P = 13.796 +/- 0.0156401 years (+/- 5.7 days)

Finding Charts

Magnitudes Graph m1 = 11.2 + 5 log d + 30.0 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.