Nakano Note (Nakano wa Kangaeru noda) NK 2399 C/2010 H1 (Garradd)
The following improved orbital elements, by S. Nakano, are from 40 observations 2010 Feb. 19 to July 2. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.59 arc second. See an orbit in HICQ 2010. Epoch = 2010 June 13.0 TT T = 2010 June 18.89946 +/- 0.00819 (m.e.) TT Peri. = 233.82007 +/- 0.00297 Node = 347.38398 +/- 0.00029 (2000.0) Inc. = 36.53154 +/- 0.00043 q = 2.7455430 +/- 0.0000454 AU e = 0.9996261 +/- 0.0000188 1/a = +0.0001362 +/- 0.0000068 1/AU origin = +0.000002 (Q= 6) future = +0.000547 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2010/ 100417 372 (2.4+ 6.0+) 100630 C51 (0.3+ 3.8+) 100219 E12 0.7- 0.6+ 100417 372 (1.8- 3.7+) 100630 C51 (1.2- 4.2+) 100219 E12 1.0- 0.5- 100417 372 1.3+ 1.1+ 100701 C51 1.0+ 0.1+ 100219 E12 0.3- 0.3+ 100419 204 1.3- 0.2+ 100701 C51 (5.0+ 5.3+) 100219 E12 0.6+ 1.0+ 100421 E12 0.7- 0.9+ 100701 C51 (4.1+ 4.2+) 100416 E12 0.3+ 0.3- 100421 E12 0.0 0.0 100701 C51 1.2- 0.5+ 100416 E12 0.3- 0.0 100421 E12 0.2+ 0.2- 100701 C51 0.1- 1.3+ 100417 H21 0.5+ 1.1- 100421 E12 0.1+ 0.2- 100701 C51 (0.3- 3.4+) 100417 H21 0.2- 0.8- 100509 415 0.4- 0.3+ 100701 C51 0.4+ 0.1+ 100417 926 0.1- 0.1- 100509 415 (1.2+ 2.3+) 100701 C51 (2.2- 5.0+) 100417 926 0.3- 0.7- 100512 415 0.1- 0.0 100701 C51 0.0 0.9+ 100417 926 0.2+ 0.4- 100512 415 0.2- 1.5+ 100701 C51 (0.2+ 3.5+) 100417 474 0.5+ 0.4- 100613 474 0.2- 0.6- 100701 C51 (0.6+ 6.6+) 100417 474 0.6+ 0.3- 100613 474 0.3+ 0.1- 100702 D90 0.0 0.7- 100417 474 0.5+ 0.1- 100613 474 0.6+ 0.6- 100702 D90 0.1+ 0.6- 100417 474 0.6+ 0.0 100613 474 0.1+ 0.7- 100702 D90 0.0 0.3- 100417 474 0.5+ 0.3- 100614 D90 1.0- 0.8+ 100417 E12 0.2+ 0.4- 100614 D90 0.9- 0.2+ ( ) -------- Rejected Obs.
Associate of Central Bureau for Astronomical Telegrams Syuichi Nakano 2013 Feb. 2