80P/Peters-Hartley (1998)

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Updated on August 2, 1998

Profile

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 34 observations 1982 to 1998, including 9 Planets, Moon and 5 minor planets perturbations and non-gravitational effect of style II. The mean residual is +/- 0.88 arc seconds. Epoch = 1998 Aug. 15.0 TT JDT = 2451040.5 T = 1998 Aug. 11.64046 +/- 0.00224 (m.e.) TT Peri. = 338.40486 +/- 0.00125 Node = 260.00668 +/- 0.00013 (2000.0) Incl. = 29.85526 +/- 0.00012 q = 1.6239230 +/- 0.0000046 AU e = 0.5980144 +/- 0.0000024 a = 4.0397542 +/- 0.0000065 AU n = 0.12138685 +/- 0.00000029 P = 8.120 +/- 0.0000197 years A1 = +0.299 +/- 0.259 A2 = -0.07463 +/- 0.00125

Finding Charts

Magnitudes Graph m1 = 12.0 + 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.