Nakano Note (Nakano wa Kangaeru noda) NK 3001 P/2015 H1 (Bressi)

The following improved orbital elements, by S. Nakano, are from 186 observations 2015 Apr. 20 to July 27. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.58 arc second. See an orbit in HICQ 2015. Epoch = 2015 Apr. 8.0 TT T = 2015 Mar. 28.62056 +/- 0.00195 (m.e.) TT Peri. = 21.75702 +/- 0.00100 Node = 325.80427 +/- 0.00015 (2000.0) Inc. = 140.65561 +/- 0.00003 q = 1.9263470 +/- 0.0000111 AU e = 0.9407803 +/- 0.0000302 a = 32.5288397 +/- 0.0005104 AU n' = 0.00531253 +/- 0.00000013 P = 185.525 +/- 0.0043663 years (+/- 1.59 days) The predicted orbit for the 2197 return is as follows: T = 2197 Feb. 7.32034 TT Epoch = 2197 Jan. 23.0 TT Peri. = 21.72089 e = 0.9406366 Node = 325.86222 (2000.0) a = 32.5385015 AU Inc. = 140.53382 n'= 0.00531016 q = 1.9315966 AU P = 185.608 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150425 900 0.1- 0.6- 150613 C23 0.2- 1.3- 150420 691 0.7- 0.0 150427 G40 0.2+ 0.2- 150614 C23 0.0 0.3- 150420 691 0.6- 0.2- 150427 G40 0.5+ 0.0 150614 958 1.8- 0.4+ 150420 691 0.5- 0.2- 150427 291 0.6- 0.5- 150614 958 (2.0- 0.2+) 150421 113 0.4+ 0.1+ 150427 291 0.8- 0.4- 150614 958 1.4- 0.7- 150421 113 0.1+ 0.5+ 150427 291 0.6- 0.2- 150615 K14 0.9- 0.4- 150421 C10 0.3+ 1.3- 150428 G40 0.0 0.2- 150615 K14 (2.1+ 0.3+) 150421 C10 0.8- 1.4+ 150428 G40 0.5+ 0.2- 150620 B54 0.1+ 0.4- 150421 C10 0.8+ 0.1+ 150428 W96 0.0 0.3+ 150620 B54 0.1+ 0.1+ 150421 C10 0.3+ 0.7+ 150428 W96 0.6- 0.9+ 150620 B54 0.6+ 0.1- 150421 C10 0.5+ 0.7+ 150428 691 1.9- 0.9- 150622 U69 0.4- 0.5+ 150421 W96 0.2+ 0.2- 150428 691 0.9- 0.3- 150622 U69 0.3- 0.3+ 150421 W96 0.9+ 0.0 150428 691 0.9- 0.7- 150622 U69 0.3+ 0.3+ 150421 291 0.2+ 0.3+ 150430 372 0.3+ 1.6+ 150622 C23 1.0+ 0.8- 150421 291 0.3+ 0.2+ 150430 372 0.6- 1.7+ 150622 C23 0.3- 0.0 150421 291 0.3+ 0.2+ 150501 291 0.1+ 0.1+ 150623 G40 0.2- 0.9- 150421 I52 0.1+ 0.3- 150501 291 0.2+ 0.4+ 150623 G40 0.1+ 0.7- 150421 I52 0.2- 0.1- 150501 291 0.5+ 0.1+ 150623 G40 0.1- 1.2- 150421 I52 0.2+ 0.1- 150502 O75 1.0- 0.5+ 150625 F51 0.1- 0.2+ 150421 I52 0.3- 0.1+ 150502 O75 0.5- 0.1+ 150625 F51 0.1- 0.0 150421 U69 0.8+ 0.9+ 150502 O75 0.2+ 0.6+ 150625 F51 0.0 0.0 150421 U69 0.9+ 0.1+ 150502 O75 0.3- 0.9+ 150625 958 (2.4- 0.1-) 150421 U69 0.8+ 0.7+ 150514 C51 0.1- 0.7- 150625 958 0.8- 0.7- 150422 095 0.1+ 0.3+ 150514 C51 0.1- 0.3- 150625 C23 1.3+ 0.5- 150422 095 0.9+ 0.2- 150514 C51 0.3- 1.7- 150625 C23 1.5+ 0.1- 150422 095 0.4+ 0.2- 150514 C51 1.3+ 1.1- 150625 958 1.3- 0.9- 150422 113 0.7+ 0.4- 150514 C51 0.6+ 0.1- 150626 F51 0.1+ 0.2+ 150422 113 0.3- 0.5- 150514 C51 0.1+ 1.1- 150626 F51 0.1+ 0.2+ 150422 113 0.0 0.4- 150514 C51 0.6- 0.1- 150626 F51 0.2- 0.2+ 150422 K61 0.9+ 0.5+ 150514 C51 0.7+ 0.0 150626 F51 0.0 0.2+ 150422 K61 0.2+ 0.2- 150515 C51 0.5- 0.8- 150627 F51 0.1- 0.2+ 150422 K61 0.1- 0.6+ 150516 D95 0.1- 0.1+ 150627 F51 0.0 0.2+ 150422 K61 0.5+ 0.0 150516 D95 0.4- 0.3- 150627 F51 0.0 0.2+ 150422 K61 1.7+ 0.7- 150516 D95 0.2+ 0.1+ 150627 F51 0.0 0.1+ 150422 K61 0.9+ 0.3+ 150518 157 0.6- 0.3+ 150628 A77 (3.8+ 0.9-) 150422 K61 1.1+ 1.3- 150518 157 1.4- 0.8+ 150628 A77 (3.6+ 0.8-) 150422 K61 0.3+ 1.4- 150518 157 1.1- 0.9+ 150628 F51 0.2- 0.2+ 150422 K61 0.2- 1.5- 150524 372 0.6- 0.6+ 150628 F51 0.1- 0.0 150422 C10 0.2+ 0.3- 150524 372 0.4- 0.5+ 150628 F51 0.2- 0.1+ 150422 C10 0.3- 0.1+ 150526 372 0.5- 0.0 150629 C23 1.1+ 0.1+ 150422 C10 0.2+ 0.5+ 150526 372 0.2+ 1.3+ 150629 C23 0.8+ 1.5- 150422 C10 0.9- 0.7- 150526 372 0.0 0.0 150629 C23 (2.0+ 0.4-) 150422 G40 0.1+ 0.4- 150607 C23 0.9- 1.0- 150629 C23 0.4+ 0.4+ 150422 G40 0.1+ 0.3- 150607 C23 1.1+ 0.9- 150630 160 1.8+ 0.5+ 150422 W96 0.2+ 0.1- 150607 C23 0.7+ 1.1+ 150630 160 0.7+ 0.3+ 150422 W96 0.0 0.2- 150607 C23 0.5- 0.8+ 150701 215 1.0+ 1.5- 150422 926 0.4+ 0.2- 150607 C10 0.6+ 1.6- 150701 215 0.4+ 1.3- 150422 291 0.1+ 0.8+ 150608 C10 0.6+ 0.3- 150701 215 0.1- 1.2- 150422 926 0.6- 0.4+ 150609 585 0.1- 1.0- 150706 G40 0.2+ 0.1- 150422 291 0.3+ 0.5+ 150609 585 0.0 0.8- 150707 G40 0.2+ 0.6- 150422 291 0.4+ 0.5+ 150609 585 0.0 0.7- 150707 C23 0.4+ 0.1+ 150422 291 0.5+ 0.6+ 150609 585 0.0 0.6- 150707 C23 0.7- 0.1+ 150422 926 0.0 0.2+ 150609 585 0.2+ 0.5- 150707 C23 0.4+ 0.6- 150422 O75 0.6- 0.5- 150609 585 0.3+ 0.3- 150711 C23 0.6- 1.0+ 150422 O75 0.3- 0.4- 150609 585 0.0 0.3- 150711 C23 0.3- 0.9- 150422 O75 0.1+ 0.1+ 150609 585 0.7+ 0.2- 150711 C23 0.7- 0.1+ 150422 O75 0.3- 1.0+ 150609 585 0.7+ 0.5+ 150719 C23 1.0+ 0.5- 150423 291 0.3- 0.2- 150609 585 0.2+ 0.6+ 150719 C23 0.8- 0.0 150423 291 0.3- 0.2- 150610 D95 0.3- 0.7+ 150720 A77 1.6+ 1.3+ 150423 291 0.7- 0.3- 150610 D95 0.5- 0.1+ 150720 A77 (2.8+ 0.2-) 150423 372 1.0- 1.1+ 150610 D95 0.4+ 0.2- 150727 F51 0.1- 0.1- 150423 372 1.1- 1.1+ 150610 C23 0.3+ 0.4- 150727 F51 0.2- 0.3- 150425 A71 0.8- 0.8- 150610 C23 0.2+ 0.5- 150727 F51 0.2+ 0.2+ 150425 A71 0.0 0.2- 150610 C23 1.5+ 0.0 150727 F51 0.0 0.1- 150425 900 0.2+ 0.5- 150613 C23 0.8+ 1.0- ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2015 Sept. 11

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