132P/Helin-Roman-Alu 2 (1997)

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Updated on September 29, 2004

Profile Designation 132P/1997 N2 Recovery Date July 13, 1997 Magnitude 19.6 mag Recoverer C. W. Hergenrother (Mt. Hopkins)

Orbital Elements The following improved orbital elements by Kenji Muraoka, are from 114 observations 1989 Oct. 26 to 1998 Mar. 9, perturbations by 9 Plantes, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.64 arc seconds. Epoch = 1997 Nov. 8.0 TT JDT = 2450760.5 T = 1997 Nov. 10.09264 +/- 0.00023 (m.e.) TT Peri. = 220.95870 +/- 0.00020 Node = 178.47974 +/- 0.00030 (2000.0) Incl. = 5.77564 +/- 0.00003 q = 1.9100178 +/- 0.0000031 AU e = 0.5316521 +/- 0.0000007 a = 4.0782030 +/- 0.0000023 AU n = 0.11967428 +/- 0.00000010 P = 8.236 +/- 0.0000069 years

Finding Charts 1997 June 1 - 1998 July 6

Magnitudes Graph m1 = 7.2 + 5 log d + 31 log r(t - 26)

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.