Nakano Note (Nakano wa Kangaeru noda) NK 1864 P/LINEAR (2009 U6 = 7JO78Z (1997) = SEQYMHB = SLY9QZA (2002))
The following objects are identical with P/2009 U6. 7JO78Z C1997 01 11.47268 09 43 20.27 +18 56 25.9 18.0 V 566 7JO78Z C1997 01 11.48309 09 43 19.93 +18 56 34.5 18.2 V 566 7JO78Z C1997 01 11.49178 09 43 19.57 +18 56 42.5 18.3 V 566 SEQYMHB C2002 08 20.31992 22 43 40.76 -22 43 16.9 18.0 644 SEQYMHB C2002 08 20.34201 22 43 39.77 -22 43 33.2 18.1 644 SEQYMHB C2002 08 20.36292 22 43 38.81 -22 43 48.6 18.0 644 SLY9QZA C2002 09 09.32374 22 27 01.88 -26 30 17.8 17.8 644 SLY9QZA C2002 09 09.34500 22 27 00.70 -26 30 30.1 17.8 644 SLY9QZA C2002 09 09.36588 22 26 59.56 -26 30 42.2 17.9 644 The following improved orbital elements, by S. Nakano, are from 162 observations 1997 to 2009. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.57 arc second. The runoff from the latest orbit are +2.21 deg in R.A. and +0.32 deg in Decl. for 2002 Aug. 20 observations with delta-T correction = +4.44 days. Then an object 7JO78Z was found from a linked orbit 2002-2009, runoff was +11" in R.A. and -2" in Decl.. The comet has passed 0.88 AU from Jupiter on 2007 Sept. 3 UT. Epoch = 2009 July 28.0 TT T = 2009 Aug. 8.82256 +/- 0.00038 (m.e.) TT Peri. = 308.72667 +/- 0.00017 Node = 112.50930 +/- 0.00008 (2000.0) Inc. = 14.64306 +/- 0.00006 q = 1.4859735 +/- 0.0000006 AU e = 0.5628136 +/- 0.0000002 a = 3.3989472 +/- 0.0000006 AU n' = 0.15728505 +/- 0.00000004 P = 6.266 +/- 0.0000015 years T = 1996 Sept. 4.60088 TT Epoch = 1996 Aug. 25.0 TT Peri. = 304.22573 e = 0.5484194 Node = 116.10243 (2000.0) a = 3.4790440 AU Inc. = 13.61502 n'= 0.15188476 q = 1.5710688 AU P = 6.489 years T = 2003 Mar. 3.01821 TT Epoch = 2003 Mar. 22.0 TT Peri. = 304.38614 e = 0.5493178 Node = 116.00589 (2000.0) a = 3.4740454 AU Inc. = 13.62893 n'= 0.15221268 q = 1.5656904 AU P = 6.475 years The predicted orbit for the 2015 return is as follows: T = 2015 Nov. 18.07301 TT Epoch = 2015 Dec. 4.0 TT Peri. = 308.92090 e = 0.5630601 Node = 112.39419 (2000.0) a = 3.3992725 AU Inc. = 14.65279 n'= 0.15726248 q = 1.4852777 AU P = 6.267 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 1997/ 091103 349 0.3+ 0.4+ 091120 704 1.5+ 0.3+ 970111 566 0.2- 0.7- 091106 850 0.0 0.9- 091121 A79 0.1+ 0.1+ 970111 566 0.3+ 0.8- 091106 850 0.7- 0.5+ 091121 A79 0.2- 0.6+ 970111 566 0.3- 0.1- 091107 B18 0.4+ 0.5- 091121 J47 0.7+ 0.4+ 2002/ 091107 B18 0.3+ 0.7- 091121 J47 0.1- 0.2- 020820 644 0.0 0.2+ 091107 B18 0.2+ 0.4- 091121 J47 (2.5+ 0.2-) 020820 644 0.1+ 0.1+ 091107 B18 0.2+ 0.7- 091121 900 0.4- 0.2+ 020820 644 0.1- 0.0 091107 B18 0.3+ 0.6- 091121 900 0.4- 0.5- 020909 644 0.1+ 0.4- 091107 I10 0.1+ 0.5- 091122 215 1.4+ 0.1- 020909 644 0.0 0.4- 091107 I10 0.1- 0.9- 091122 I10 0.5- 0.0 020909 644 0.1+ 0.5- 091107 I10 1.2+ 0.9- 091122 G96 0.4- 0.2- 2009/ 091108 850 0.3- 0.2- 091122 G96 1.0- 0.2+ 091019 349 0.2- 0.0 091108 850 0.7- 0.4+ 091122 G96 0.6- 0.0 091019 349 0.4- 0.2+ 091108 850 0.3+ 1.2- 091122 G96 1.9- 0.7+ 091019 349 0.3- 0.4+ 091109 B18 0.7+ 0.8- 091122 D25 0.2+ 0.4- 091021 215 1.0- 0.0 091109 B18 0.2+ 0.6- 091123 372 0.3+ 0.3- 091021 215 0.4- 0.1- 091109 B18 0.5+ 0.9- 091123 D25 0.4- 0.8+ 091021 215 0.1- 0.1- 091109 B18 0.3+ 0.8- 091125 I10 1.2+ 0.3+ 091025 A77 0.5- 0.5+ 091112 850 0.3- 0.2- 091125 I10 1.0+ 0.3- 091025 A77 0.3+ 1.1+ 091112 850 0.0 0.7- 091125 H45 0.6+ 0.5- 091025 A77 (2.6- 1.1+) 091113 A79 0.2- 0.0 091125 H45 0.3+ 0.4- 091026 A77 0.2+ 0.3- 091113 A79 0.4+ 0.3+ 091125 H45 0.3- 0.5- 091027 A77 0.1- 0.2+ 091113 850 0.3- 0.6+ 091125 H45 0.4+ 0.4- 091027 A77 0.2+ 0.4+ 091113 850 0.7- 0.3+ 091125 H45 0.6- 0.4- 091027 A77 0.3- 0.1- 091114 118 0.5+ 0.4- 091125 H45 0.2- 0.3- 091027 704 0.0 0.9+ 091114 118 0.6- 0.1- 091125 H45 0.6+ 0.3- 091027 704 0.6+ 1.0+ 091114 118 0.0 0.7- 091125 372 1.9- 0.1- 091027 704 0.8+ 0.1+ 091114 118 0.1- 0.2- 091126 A79 0.3- 0.3+ 091027 704 0.0 0.6+ 091114 118 0.1+ 0.2+ 091126 A79 0.0 0.1+ 091027 704 0.4+ 0.9+ 091114 118 0.1- 0.3- 091126 A79 0.1+ 0.3+ 091028 114 0.5+ 0.5- 091114 H06 1.2- 0.2+ 091126 I10 0.8+ 1.0+ 091028 114 0.2+ 0.2- 091114 H06 0.0 0.7+ 091126 I10 1.2- 0.1- 091028 114 0.3+ 0.0 091116 850 0.3- 0.7+ 091126 I10 0.3- 0.1+ 091028 114 0.8+ 0.4- 091116 850 0.2- 0.5+ 091126 I10 0.2- 0.6- 091028 114 0.5+ 0.3- 091116 703 1.9- 0.9+ 091126 I10 0.3- 0.0 091028 A77 1.1+ 0.4- 091116 703 (3.6- 1.1+) 091126 I10 0.0 0.3- 091028 A77 0.2+ 0.3+ 091116 703 (2.1- 0.6+) 091126 H45 0.8- 0.7- 091029 A79 0.2+ 0.1+ 091116 703 1.2- 0.8+ 091126 H45 0.6- 0.8- 091029 A79 0.2+ 0.3+ 091117 B18 0.1+ 0.7- 091126 H45 0.3+ 0.4- 091029 291 1.4- 0.9+ 091117 B18 0.1- 0.5- 091126 H45 0.5- 0.3- 091029 291 1.9- 1.2+ 091117 B18 0.1+ 0.6- 091126 H45 0.1- 0.1- 091029 291 1.8- 1.0+ 091117 A71 0.6+ 0.3- 091126 H45 0.4- 0.1- 091030 A77 0.6+ 0.2- 091117 A71 0.3- 0.6- 091126 H45 0.1+ 0.1- 091030 A77 0.2+ 0.4- 091117 A71 0.2- 0.1- 091127 585 0.0 0.4- 091030 A77 0.8+ 0.5- 091117 A71 0.7- 0.8- 091127 585 0.6- 0.1- 091030 372 0.4+ 0.2+ 091117 704 0.5+ 0.2+ 091127 585 0.7- 0.5+ 091030 372 0.2- 0.2- 091117 H10 0.3+ 0.2- 091128 A77 0.6- 0.4+ 091030 349 0.3- 0.5+ 091117 H10 0.3+ 0.1- 091128 A77 0.1- 0.4+ 091030 349 0.4- 0.3+ 091117 H10 0.4+ 0.7+ 091128 A77 0.6- 0.5+ 091031 H06 0.4+ 0.3+ 091117 704 0.1+ 0.6+ 091201 349 0.8+ 0.5+ 091031 H06 0.1- 0.5+ 091117 704 0.8+ 1.0+ 091201 349 1.0+ 0.3+ 091102 H10 1.7- 0.0 091117 704 0.4+ 0.6+ 091205 349 1.0+ 0.3+ 091102 H10 (2.2+ 0.4+) 091117 704 1.0+ 0.1+ 091205 349 0.5+ 0.5+ 091102 H10 1.5+ 0.7+ 091120 704 0.1+ 0.2+ 091206 J40 0.6+ 0.1- 091103 204 0.0 0.2+ 091120 704 0.0 0.0 091206 J40 1.0+ 0.2- 091103 349 0.4+ 0.4+ 091120 704 0.3- 0.0 091206 J40 1.1+ 0.4- 091103 349 0.2+ 0.1+ 091120 704 0.1+ 0.0 ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2009 Dec. 12