Nakano Note (Nakano wa Kangaeru noda) NK 3084 C/2015 H2 (PANSTARRS)

The following improved orbital elements, S. Nakano, are from 60 observations 2015 Apr. 20 to 2016 Mar. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.42 arc second. Observations on 2016 March show the residuals of +20" mainly for Right Ascension from a recent orbit. See an orbit in HICQ 2015. Epoch = 2016 Sept. 9.0 TT T = 2016 Sept.13.27766 +/- 0.01139 (m.e.) TT Peri. = 287.90862 +/- 0.00201 Node = 350.69252 +/- 0.00023 (2000.0) Inc. = 33.70521 +/- 0.00006 q = 4.9670197 +/- 0.0000621 AU e = 1.0031982 +/- 0.0000492 1/a = -0.0006439 +/- 0.0000099 1/AU origin = +0.000039 (Q= 7) future = -0.000512 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150427 W96 0.0 0.2- 150605 E07 0.1- 0.2+ 150420 W98 0.9- 0.6+ 150427 W96 0.4+ 0.7+ 150605 E07 0.2+ 0.4+ 150420 W98 1.4- 0.6+ 150427 568 0.1- 0.2- 150719 474 0.0 0.0 150424 F51 0.2+ 0.1- 150427 568 0.1- 0.3- 150719 474 0.3+ 0.0 150424 F51 0.1- 0.0 150427 568 0.0 0.3- 150719 474 0.1+ 0.0 150424 F51 0.3+ 0.0 150427 Q62 0.3+ 0.6- 150719 Q62 0.6+ 0.5+ 150424 F51 0.1+ 0.1- 150427 Q62 0.5+ 0.6- 150719 Q62 0.4+ 0.6+ 150425 807 0.4- 0.4+ 150427 Q62 0.5+ 0.2- 150825 474 0.3+ 0.2- 150425 807 0.0 0.5+ 150430 W96 0.2- 0.2+ 150825 474 0.1+ 0.0 150425 807 0.2- 0.3+ 150430 W96 0.3+ 0.4- 150825 474 0.1- 0.3- 150425 W96 0.3+ 1.2+ 150511 F51 0.1+ 0.1- 2016/ 150425 W96 0.0 0.9+ 150511 F51 0.3- 0.2+ 160208 474 0.2+ 0.3+ 150425 W96 0.1- 0.1+ 150511 F51 0.3- 0.1- 160208 474 0.3+ 0.2- 150425 W96 0.2- 0.5- 150515 W96 0.2+ 0.1+ 160208 474 0.4+ 0.2+ 150426 W96 0.3+ 0.7- 150515 W96 0.3+ 0.7- 160208 474 0.8- 0.2+ 150426 W96 0.2- 0.8+ 150515 474 0.3+ 0.0 160208 474 0.6- 0.1- 150426 W96 0.4- 1.2+ 150515 474 0.2+ 0.3+ 160208 474 0.0 0.4- 150427 Y00 0.2- 0.5+ 150515 474 0.0 0.2+ 160313 474 0.2+ 0.1- 150427 Y00 0.4- 0.5+ 150517 Q62 0.8+ 0.8+ 160313 474 0.1+ 0.2- 150427 Y00 0.0 0.1- 150517 Q62 0.8+ 0.7+ 160313 474 0.2+ 0.2- 150427 W96 0.5+ 0.0 150517 Q62 0.8+ 0.9+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2016 Apr. 1

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