Nakano Note (Nakano wa Kangaeru noda) NK 2060 P/2010 H4 (Scotti)

The following improved orbital elements, by S. Nakano, are from 48 observations 2010 Apr. 20 to June 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. See an orbit on HICQ 2010/2011. Epoch = 2010 June 13.0 TT T = 2010 June 21.43937 +/- 2.88177 (m.e.) TT Peri. = 179.92705 +/- 0.30177 Node = 44.83103 +/- 0.00407 (2000.0) Inc. = 2.32164 +/- 0.00184 q = 4.8293902 +/- 0.0019441 AU e = 0.2692330 +/- 0.0006538 a = 6.6086595 +/- 0.0009809 AU n' = 0.05801416 +/- 0.00001292 P = 16.989 +/- 0.0037823 years (+/- 1.38 days) The predicted orbit for the 2027 return is as follows: T = 2027 May 21.94919 TT Epoch = 2027 June 4.0 TT Peri. = 179.12472 e = 0.2679785 Node = 44.75339 (2000.0) a = 6.6239342 AU Inc. = 2.31711 n'= 0.05781361 q = 4.8488620 AU P = 17.048 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100421 E10 0.7+ 0.5+ 100509 G96 0.9- 0.0 100420 691 0.5- 0.1+ 100422 291 0.6- 0.2+ 100509 H01 0.5+ 0.2+ 100420 691 0.4- 0.1- 100422 291 0.8+ 0.1- 100509 G96 1.5- 0.0 100420 691 0.7- 0.2- 100422 291 0.4+ 1.3- 100509 474 0.1+ 0.1- 100420 291 0.3- 0.4+ 100425 291 0.3- 0.2- 100509 474 0.0 0.3- 100420 291 0.9+ 0.7- 100425 291 0.4- 0.0 100509 474 0.3+ 0.4- 100420 291 0.3+ 0.1- 100425 291 0.0 0.2- 100509 474 0.3+ 0.0 100420 291 0.2- 0.4+ 100502 A79 0.6+ 0.5+ 100509 474 0.0 0.4- 100420 291 0.4- 0.2+ 100502 A79 0.3+ 0.3- 100521 291 0.2+ 0.3+ 100420 291 0.2- 0.5+ 100509 291 0.1- 0.0 100521 291 0.4+ 0.2- 100421 H21 0.2- 0.6+ 100509 291 0.8- 0.4+ 100521 291 0.1- 0.0 100421 H21 0.1- 0.6- 100509 291 0.2- 0.3+ 100613 474 0.1+ 0.1- 100421 H01 0.1+ 0.1+ 100509 H01 0.7+ 0.0 100613 474 0.1- 0.2- 100421 H01 0.1+ 0.0 100509 H01 0.4+ 0.1+ 100613 474 0.2+ 0.2+ 100421 H01 0.1+ 0.0 100509 G96 0.3+ 0.2- 100613 474 0.2- 0.1+ 100421 H01 0.4+ 0.0 100509 H01 0.6+ 0.0 100421 E10 0.2+ 0.2+ 100509 G96 0.9- 0.1+ ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Apr. 11

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