Nakano Note (Nakano wa Kangaeru noda) NK 2978 C/2015 B2 (PANSTARRS)

The following improved orbital elements, S. Nakano, are from 83 observations 2015 Jan. 6 to June 10. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.34 arc second. The comet has passed 3.09 AU from Jupiter on 2015 Jan. 22 UT. Epoch = 2016 May 12.0 TT T = 2016 May 6.58194 +/- 0.00388 (m.e.) TT Peri. = 284.76748 +/- 0.00237 Node = 341.90240 +/- 0.00043 (2000.0) Inc. = 105.08863 +/- 0.00065 q = 3.3697327 +/- 0.0001271 AU e = 1.0003728 +/- 0.0000239 1/a = -0.0001106 +/- 0.0000071 1/AU origin = +0.000227 (Q= 7) future = +0.000257 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150205 291 0.5+ 0.0 150224 F51 0.1- 0.2- 150106 F51 0.2- 0.0 150205 291 0.1+ 0.2+ 150224 F51 0.0 0.1- 150106 F51 0.2- 0.2+ 150207 291 0.3- 0.3- 150224 372 0.5+ 0.2+ 150106 F51 0.3- 0.3+ 150207 291 0.2+ 0.4+ 150224 372 0.3+ 0.5+ 150129 F51 0.0 0.1- 150207 291 0.3- 0.6+ 150224 372 0.3+ 0.2+ 150129 F51 0.0 0.1+ 150209 958 0.6- 0.2+ 150309 215 0.2+ 1.0+ 150129 F51 0.2+ 0.2- 150209 958 0.6- 0.3- 150309 215 0.7+ 0.7+ 150129 F51 0.0 0.1- 150209 958 0.6- 0.3- 150309 215 0.6+ 0.4+ 150130 Q62 0.1- 0.5+ 150210 291 0.3+ 0.3+ 150314 474 0.0 0.2+ 150130 Q62 0.1- 0.5+ 150210 291 0.1+ 0.3+ 150314 474 0.1- 0.1+ 150130 Q62 0.0 0.4+ 150210 291 0.0 0.3+ 150314 474 0.1- 0.1+ 150130 K92 0.0 0.2- 150210 H01 0.1- 0.1- 150314 474 0.0 0.1+ 150130 K92 0.2+ 0.2- 150210 H01 0.0 0.0 150318 E07 0.1- 0.5+ 150130 K92 0.2+ 0.3- 150210 H01 0.1- 0.0 150318 E07 0.2+ 0.2+ 150130 K92 0.0 0.0 150210 H01 0.0 0.1- 150319 372 0.2+ 0.9- 150130 K92 0.1- 0.3- 150211 821 0.2- 0.1- 150319 372 0.3- 1.0- 150131 W96 0.5- 0.1- 150211 821 0.4- 0.1+ 150319 372 0.4- 1.0- 150131 W96 0.0 0.2+ 150211 821 0.3- 0.3- 150416 474 0.3- 0.0 150131 807 0.0 0.4+ 150211 291 0.3+ 0.4+ 150416 474 0.2- 0.0 150131 807 0.2+ 0.3+ 150211 291 0.0 0.0 150416 474 0.0 0.0 150131 807 0.0 0.1+ 150211 291 0.2+ 0.2- 150416 474 0.3- 0.0 150131 F51 0.0 0.1- 150220 372 0.5- 0.9+ 150416 E07 0.3- 0.1- 150131 F51 0.1+ 0.3- 150220 372 0.1+ 0.5+ 150416 E07 0.0 0.0 150131 F51 0.0 0.1- 150220 372 0.0 1.0+ 150417 Q62 0.2+ 0.1+ 150202 807 0.4- 0.0 150223 372 0.4+ 1.0+ 150417 Q62 0.1+ 0.1+ 150202 807 0.4- 0.6+ 150223 372 0.5+ 1.0+ 150417 Q62 0.1- 0.3+ 150202 807 0.1+ 0.5+ 150224 F51 0.1+ 0.0 150610 E07 0.1- 0.3- 150205 291 0.3+ 0.2+ 150224 F51 0.1- 0.0 150610 E07 0.4+ 0.3- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2015 July 30

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