Nakano Note (Nakano wa Kangaeru noda) NK 2605 P/Garradd (2007 H3 = 2014 A1)
The following improved orbital elements, by S. Nakano, are from 82 observations 2001 to 2014. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.52 arc second. The identification with 2001 observations have been already suggested by Nakano in NK 1672 (2008). The recovery observations show the residuals of -57" (R. A.) and -15" (Decl.) from the prediction in NK 1672 (= HICQ 2012) with the delta-T correction = +0.049 day. Epoch = 2014 Mar. 4.0 TT T = 2014 Mar. 1.28614 +/- 0.00035 (m.e.) TT Peri. = 350.03020 +/- 0.00018 Node = 263.67685 +/- 0.00008 (2000.0) Inc. = 25.20458 +/- 0.00003 q = 1.8307106 +/- 0.0000008 AU e = 0.4773118 +/- 0.0000002 a = 3.5024908 +/- 0.0000006 AU n' = 0.15036217 +/- 0.00000004 P = 6.555 +/- 0.0000018 years T = 2001 Jan. 25.52281 TT Epoch = 2001 Jan. 11.0 TT Peri. = 350.21305 e = 0.4766298 Node = 263.67303 (2000.0) a = 3.5054898 AU Inc. = 25.19453 n'= 0.15016925 q = 1.8346689 AU P = 6.563 years T = 2007 Aug. 15.33128 TT Epoch = 2007 Aug. 8.0 TT Peri. = 350.14929 e = 0.4775603 Node = 263.65790 (2000.0) a = 3.5013968 AU Inc. = 25.21572 n'= 0.15043264 q = 1.8292689 AU P = 6.552 years The predicted orbit for the 2020 return is as follows: T = 2020 Sept.17.92483 TT Epoch = 2020 Sept.28.0 TT Peri. = 350.12531 e = 0.4785931 Node = 263.64064 (2000.0) a = 3.4971296 AU Inc. = 25.23472 n'= 0.15070806 q = 1.8234275 AU P = 6.540 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2001/ 070428 673 0.1- 0.7- 070520 E12 0.9+ 1.1+ 010630 644 0.1- 0.8+ 070428 673 0.3- 0.3- 070520 E12 0.1+ 0.2+ 010630 644 0.2+ 0.7+ 070428 673 0.4- 0.5- 070524 415 0.1+ 0.9- 010630 644 0.3- 0.5+ 070428 673 0.2- 0.4- 070524 415 0.8+ 0.6- 2007/ 070505 415 0.2- 0.6- 070605 415 0.1- 0.3- 070328 E12 1.1- 0.5+ 070505 415 0.3- 1.0- 070605 415 0.3- 0.1- 070328 E12 0.9- 0.5- 070507 372 0.2+ 0.3+ 070606 415 1.3+ 0.4- 070328 E12 0.8- 0.9- 070507 372 0.7+ 0.2+ 070606 415 0.5+ 0.0 070328 E12 0.3- 0.2- 070509 F85 0.4+ 0.3+ 070611 474 0.1+ 0.2- 070422 E12 0.4- 0.4- 070509 F85 0.3+ 0.2+ 070611 474 0.2+ 0.1- 070422 E12 0.0 1.3+ 070509 F85 0.3+ 0.3+ 070611 474 0.4+ 0.0 070422 E12 0.1- 1.7+ 070510 415 0.6+ 0.5+ 070612 415 0.3- 0.7- 070422 E12 0.4- 1.8+ 070510 415 0.5+ 0.2+ 070612 415 0.1+ 0.3- 070422 E12 0.0 0.2- 070510 423 0.1+ 0.1+ 070616 E12 0.5+ 0.3- 070422 E12 0.2- 0.6+ 070510 423 0.3+ 0.3- 070714 415 0.3- 0.6- 070422 E12 0.1+ 0.4+ 070511 423 0.5+ 1.0+ 070714 415 0.6- 0.9- 070422 E12 0.1- 0.7+ 070511 423 0.3+ 0.6+ 070722 415 0.4- 0.1+ 070423 F85 0.1- 0.9- 070511 415 0.0 0.7- 070722 415 0.8- 1.0- 070423 F85 0.4- 0.1- 070511 415 0.0 0.2- 070807 474 0.0 0.7- 070423 F85 0.1- 0.7- 070511 E12 0.1+ 0.1+ 070807 474 0.0 0.7- 070423 428 0.2+ 1.1+ 070511 E12 0.1+ 0.2+ 070807 474 0.1- 0.6- 070423 428 0.9- 0.3+ 070512 415 0.2+ 0.3- 070808 E12 0.1+ 0.9- 070423 428 0.2- 0.1- 070512 415 0.0 0.4- 070923 215 (0.7+ 2.7-) 070423 428 0.2- 0.3- 070514 423 0.3+ 0.8+ 2014/ 070423 E12 0.2- 0.1- 070514 423 0.3+ 0.3+ 140106 I47 0.0 1.1+ 070427 673 0.5- 0.7- 070519 213 0.1+ 0.0 140106 I47 0.2+ 0.7+ 070427 673 0.5- 0.6- 070519 213 0.1+ 0.0 140107 I47 0.3- 0.7+ 070427 673 0.7- 0.8- 070519 213 0.2+ 0.1- 140107 I47 0.1- 0.8+ 070427 673 0.8- 0.7- 070520 E12 0.5+ 0.8+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2014 Jan. 16