Nakano Note (Nakano wa Kangaeru noda) NK 2027 C/2010 KW7 (WISE)

The following improved orbital elements, by S. Nakano, are from 105 observations 2010 May 16 to 2011 Jan. 2. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.46 arc second. Epoch = 2010 Oct. 11.0 TT T = 2010 Oct. 11.34322 +/- 0.00083 (m.e.) TT Peri. = 332.30459 +/- 0.00027 Node = 104.76090 +/- 0.00003 (2000.0) Inc. = 147.06182 +/- 0.00003 q = 2.5704216 +/- 0.0000033 AU e = 0.9742853 +/- 0.0000068 1/a = +0.0100041 +/- 0.0000027 1/AU a = 99.96 AU P = 999.4 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 101028 291 0.4- 0.2+ 101204 704 1.0+ 0.7- 100516 C51 0.7+ 0.3+ 101028 291 0.7- 0.5+ 101211 160 0.3+ 0.1+ 100516 C51 0.1+ 0.0 101110 H06 0.7+ 0.3+ 101211 160 0.6+ 0.2+ 100516 C51 0.5+ 0.3- 101110 H06 0.7+ 0.2- 101211 160 0.5+ 1.0- 100516 C51 0.5+ 0.0 101110 F65 0.7+ 0.6- 101213 160 0.2+ 0.4+ 100516 C51 0.0 0.0 101110 F65 0.4+ 0.6- 101213 160 0.4+ 0.3+ 100516 C51 0.2+ 0.2+ 101110 F65 0.2- 0.1- 101213 291 0.5- 0.5+ 100516 C51 0.0 0.0 101111 291 0.4- 0.4+ 101213 291 0.8- 0.4+ 100519 291 1.0- 0.4- 101111 291 0.0 0.5+ 101213 291 0.4- 0.4+ 100519 291 0.8- 0.6+ 101111 291 0.3- 0.1+ 101213 H15 0.2+ 0.4+ 100519 E12 0.0 0.3- 101111 291 1.0- 0.8- 101213 H15 0.2- 0.3+ 100520 291 0.2- 0.1- 101111 291 0.6- 0.1+ 101213 H15 0.7- 0.2+ 100520 291 0.5- 0.4+ 101111 291 0.4- 0.2+ 101213 H15 1.0- 0.1+ 100520 291 1.4- 0.6- 101111 291 0.5- 0.2+ 101215 160 1.0- 0.7+ 100620 568 0.1+ 0.0 101111 291 0.4- 0.1+ 101215 160 (2.1- 1.5+) 100620 568 0.1+ 0.1+ 101111 291 0.4- 0.1+ 101216 160 0.3+ 1.0- 100620 568 0.1+ 0.0 101111 291 0.5- 0.2+ 101216 160 0.2- 0.1+ 101017 691 0.3- 0.8- 101111 291 0.6- 0.0 101216 160 0.4+ 0.0 101017 691 0.4- 0.2- 101117 291 0.7- 0.4+ 101218 900 0.7- 0.0 101017 691 1.0- 0.4- 101117 291 0.8- 0.3+ 101218 900 0.1+ 0.2+ 101018 691 1.1- 0.5- 101117 291 0.4- 0.4+ 101228 160 0.2+ 0.2- 101018 691 1.0- 0.4- 101129 349 0.6+ 0.5- 101228 160 0.4+ 0.1+ 101018 691 0.7- 0.0 101129 349 0.1+ 0.4+ 101228 160 0.2+ 0.4+ 101018 695 0.5+ 0.3+ 101129 349 1.2+ 0.1+ 101229 900 0.4+ 0.0 101018 695 0.7+ 0.2+ 101130 204 0.1- 0.3- 101229 900 0.2- 0.4+ 101018 695 0.8+ 0.1- 101130 204 0.0 0.1- 2011/ 101022 568 0.2+ 0.0 101130 204 0.1- 0.3- 110101 A77 0.0 0.9+ 101022 568 0.2+ 0.0 101202 703 1.4+ 0.6- 110101 A77 0.5+ 0.5+ 101022 568 0.2+ 0.1+ 101202 703 0.1+ 0.9+ 110102 G96 0.2- 0.4- 101022 568 0.2+ 0.0 101202 703 1.2- 0.8- 110102 G96 0.2- 0.0 101028 291 (2.3- 0.4+) 101202 703 0.4- 0.5- 110102 G96 0.2+ 0.5+ 101028 291 0.6- 0.1+ 101204 B18 1.0+ 0.8- 110102 G96 0.3+ 0.3+ 101028 291 0.4- 0.1- 101204 B18 0.3+ 0.3- 110102 B49 0.8- 1.0- 101028 291 0.6- 0.3+ 101204 B18 0.1+ 0.1- 110102 B49 0.5- 1.0- 101028 291 0.8- 0.6+ 101204 704 1.5+ 0.2+ 110102 B49 0.1- 0.5- 101028 291 0.6- 0.1+ 101204 704 0.3+ 0.5- 101028 291 0.5- 0.3+ 101204 704 0.1+ 0.3- ( ) -------- Rejected Obs.

Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2011 Jan. 8

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