C/1996 R1 ( Hergenrother-Spahr )

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Updated on February 25, 1997

Profile Discovery Date September 7, 1996 Magnitude 14 mag Discoverer Carl W. Hergenrother, Timothy B. Spahr (Mount Bigelow)

Orbital Elements The following improved orbital elements, by Kenji Muraoka, are from 309 observations 1996 Sept. 8 to Dec. 3, perturbations by 9 Planets, Moon and 5 minor planets were taken into account. The mean residual is +/- 0.60 arc seconds. Epoch = 1996 Aug. 25.0 TT JDT = 2450320.5 T = 1996 Aug. 28.73918 +/- 0.00107 (m.e.) TT Peri. = 139.45613 +/- 0.00051 Node = 149.74470 +/- 0.00054 (2000.0) Incl. = 145.81455 +/- 0.00022 q = 1.8992135 +/- 0.0000100 AU e = 0.9857025 +/- 0.0000840 1/a = +0.0075281 +/- 0.0000442 1/AU ( P = 1531 years ) orig. 1/a = +0.0080976 fut. 1/a = +0.0076585

Finding Charts 1995 Dec. 9 - 1996 Sept.14 1996 Aug. 15 - 1996 Nov. 3 1996 Oct. 24 - 1997 Aug. 20

Magnitudes Graph m1 = 6.2 + 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.