Nakano Note (Nakano wa Kangaeru noda) NK 2261 C/2010 L3 (Catalina)
The following improved orbital elements, by S. Nakano, are from 110 observations 2010 June 15 to 2012 May 1. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.55 arc second. The comet will pass 2.69 AU from Saturn on 2013 Dec. 21 UT. See the previous orbits in NK 2046 and NK 2090 (HICQ 2011/2012). Epoch = 2010 Nov. 20.0 TT T = 2010 Nov. 10.41168 +/- 0.02852 (m.e.) TT Peri. = 121.77172 +/- 0.00127 Node = 38.27580 +/- 0.00010 (2000.0) Inc. = 102.63077 +/- 0.00007 q = 9.8829050 +/- 0.0000451 AU e = 0.9991494 +/- 0.0000284 1/a = +0.0000861 +/- 0.0000029 1/AU origin = +0.000157 (Q= 7) future = +0.000083 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100616 H06 0.3- 0.0 100821 A77 0.4+ 1.9+ 100615 703 0.4+ 0.1- 100616 658 0.2- 0.2- 100821 A77 0.6+ 1.2+ 100615 703 0.7- 0.5- 100616 658 0.7+ 0.1- 100821 A77 0.7- 0.5+ 100615 703 1.3- 1.3- 100616 658 0.2- 0.1+ 100822 160 0.4+ 0.4- 100615 703 1.6- 1.0- 100616 H06 0.9- 0.3+ 100822 160 0.3+ 0.5- 100615 H01 0.4- 0.5+ 100616 H06 0.0 0.6+ 100822 160 0.2+ 1.0- 100615 H01 0.3- 0.4+ 100616 H06 0.6+ 0.8+ 2011/ 100615 H01 0.4- 0.3+ 100616 470 0.2- 0.2- 110213 H06 0.5- 1.7+ 100615 H15 0.9+ 0.2+ 100616 470 0.4- 0.2+ 110303 H06 0.4- 0.4- 100615 H15 0.7+ 0.0 100616 J01 0.3+ 0.5+ 110303 H06 0.3- 0.1- 100615 H01 0.4- 0.4+ 100616 J01 0.2+ 0.5+ 110306 H10 0.9+ 0.4- 100615 H15 1.5+ 0.2- 100616 J01 0.0 0.5+ 110306 H10 0.2+ 0.5+ 100615 B15 0.5+ 0.6- 100617 157 0.5- 0.7- 110324 118 0.3- 0.0 100615 B15 0.9+ 0.8- 100617 157 0.2- 0.7- 110324 118 0.7- 0.2+ 100615 B15 0.7+ 0.7- 100617 157 0.2- 0.4- 110324 118 0.1+ 0.1- 100615 B15 0.3+ 0.5- 100619 H10 0.1+ 0.1+ 110408 C10 0.7+ 0.1- 100615 B15 0.2+ 0.5- 100619 H10 0.0 0.2- 110408 C10 0.6+ 0.1- 100615 B15 0.1+ 0.3- 100619 H10 0.4- 0.4- 110410 941 0.8+ 0.2- 100615 J95 0.1+ 0.4- 100709 157 0.1- 0.4- 110410 941 0.6+ 0.2- 100616 J95 0.3+ 0.1- 100709 157 0.2- 0.1- 110410 941 0.7- 0.2- 100616 H36 0.5- 0.2- 100709 157 0.2- 0.2- 110504 215 0.7+ 0.3- 100616 H10 0.1+ 0.2+ 100727 B11 0.5- 0.5- 110504 215 0.0 0.6- 100616 H36 0.3+ 0.1- 100727 B11 0.2+ 0.1+ 110504 215 0.8- 1.2- 100616 H10 0.1+ 0.2+ 100727 B11 0.0 0.2+ 110605 703 0.3- 0.3- 100616 H10 0.1- 0.0 100727 B11 0.4- 0.0 110605 703 0.8+ 0.2+ 100616 926 0.4+ 0.1+ 100804 157 0.1- 0.7+ 110605 703 0.0 0.3+ 100616 448 0.7+ 0.2+ 100804 157 0.1- 0.1+ 110605 703 0.3+ 0.2+ 100616 926 0.2+ 0.2+ 100807 215 0.5+ 0.1+ 110620 204 0.3+ 0.1- 100616 H21 0.5+ 0.9+ 100807 215 0.3+ 0.1- 110621 204 0.2+ 0.4- 100616 448 0.6+ 0.4- 100807 215 0.0 0.3- 110627 561 0.1+ 0.7+ 100616 H01 0.5- 0.3+ 100807 204 0.2- 0.3- 110627 561 0.5- 1.3+ 100616 926 0.1+ 0.0 100807 204 0.1- 0.4- 110627 561 0.4- 1.1- 100616 H21 0.6+ 0.7+ 100811 118 1.3- 0.9+ 2012/ 100616 H01 0.5- 0.3+ 100811 118 0.2+ 0.5- 120501 703 0.5+ 0.4- 100616 448 0.6- 1.4+ 100811 118 0.7+ 0.8- 120501 703 0.9- 0.4+ 100616 H01 0.5- 0.3+ 100819 691 0.4- 0.4+ 120501 703 1.3- 0.7- 100616 H01 0.5- 0.5+ 100819 691 0.1- 0.5- 120501 703 0.9+ 1.1+ 100616 H06 0.1+ 0.7+ 100819 691 0.5- 0.5- Not included below Obs. 120519 215 1.3- 0.8- 120519 215 1.0- 0.8- 120519 215 0.6- 0.6- 120523 130 0.4- 1.1- 120523 130 1.1+ 1.6- 120526 C10 0.0 0.6- 120526 C10 0.0 0.1- 120526 C10 0.9+ 0.3- ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2012 May 5