Nakano Note (Nakano wa Kangaeru noda) NK 2980 C/2015 C2 (SWAN)
The following improved orbital elements, S. Nakano, are from 144 observations 2015 Feb. 25 to July 9. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.86 arc second. The comet has passed 2.98 AU from Saturn on 2013 Jan. 31 UT Epoch = 2015 Feb. 27.0 TT T = 2015 Mar. 4.56515 +/- 0.00010 (m.e.) TT Peri. = 334.13355 +/- 0.00023 Node = 49.52953 +/- 0.00015 (2000.0) Inc. = 94.50108 +/- 0.00009 q = 0.7113750 +/- 0.0000024 AU e = 0.9985075 +/- 0.0000096 1/a = +0.0020981 +/- 0.0000134 1/AU origin = +0.001937 (Q= 7) future = +0.002828 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 150316 C23 0.8+ 1.3- 150520 C23 0.7- 0.3+ 150225 Q80 1.9- 0.2+ 150316 C23 0.2- 1.1- 150520 C23 0.3- 0.3+ 150225 Q80 1.3- 0.9+ 150316 C23 1.5+ 0.3+ 150520 C23 0.2+ 0.0 150225 Q80 1.4- 0.8+ 150319 372 0.8+ 0.1- 150523 C10 0.0 0.4+ 150226 W96 0.6- 0.5+ 150319 372 0.7+ 0.2- 150523 C10 0.3- 0.2- 150226 W96 0.7- 0.8+ 150322 C23 0.5+ 1.3- 150523 C10 0.2- 0.7+ 150226 W96 0.5- 0.7+ 150322 C23 1.2+ 0.2- 150525 585 0.3- 0.8+ 150226 W96 1.1- 0.6+ 150322 C23 0.8+ 0.6- 150525 585 0.6- 0.4- 150226 W96 0.8- 0.7+ 150322 C23 0.5+ 1.2- 150525 585 0.9- 0.1+ 150226 W96 0.2- 0.6+ 150322 C23 1.2+ 0.4- 150525 585 0.0 0.1+ 150226 W96 0.4- 0.5+ 150326 367 0.9+ 0.4- 150525 585 0.5+ 0.2- 150226 Q62 1.3- 1.3+ 150326 367 0.9+ 0.6- 150525 585 0.0 1.2+ 150226 Q62 1.9- 1.7+ 150326 367 0.6+ 0.1- 150525 585 0.9+ 0.3+ 150227 W96 1.0- 1.2+ 150328 349 0.8+ 0.5- 150529 D81 1.0- 0.1- 150227 W96 0.7- 1.1+ 150328 349 0.5+ 0.8- 150529 D81 0.7- 1.5- 150227 W88 0.0 1.4+ 150328 349 1.4+ 0.0 150530 L04 1.7- 1.1+ 150227 W88 1.1- 0.5+ 150330 349 1.7+ 0.9+ 150530 L04 0.2+ 0.0 150227 W88 0.4- 0.3+ 150330 349 1.2+ 0.3+ 150530 L04 0.0 0.2+ 150227 W96 1.9+ 0.2+ 150415 C23 0.4- 0.6- 150603 B96 0.3+ 0.9+ 150227 I47 0.7+ 0.9+ 150415 C23 (2.5+ 1.8+) 150603 B96 0.6+ 1.1- 150227 I47 0.1+ 0.6- 150415 A71 (5.6+ 2.7+) 150603 B96 0.7- 0.9+ 150228 W96 0.6- 0.5+ 150415 A71 0.0 0.8- 150603 B96 0.4+ 0.6+ 150228 W96 1.2- 0.7+ 150415 C23 0.5+ 0.1+ 150604 C23 (2.4- 1.3+) 150228 W96 1.1- 0.8+ 150415 C23 1.7+ 0.5+ 150604 C23 1.2- 0.6+ 150228 W96 0.4- 1.1+ 150415 C23 0.7+ 0.6- 150604 C23 0.0 0.4+ 150228 W96 1.2- 0.7- 150420 C23 1.0+ 0.5+ 150607 C23 0.5- 1.0+ 150228 W96 0.6+ 0.8- 150420 C23 0.7- 1.3+ 150607 C23 0.2- 0.2+ 150304 D81 1.2- 2.1- 150420 C23 0.2- 1.1+ 150607 C23 1.5- 0.3+ 150304 D81 2.1- 0.1- 150424 C23 0.6+ 0.2+ 150612 C23 1.8- 0.8+ 150309 C23 0.4- 0.6- 150424 C23 0.7+ 0.0 150612 C23 1.0- 0.1- 150309 C23 (1.0- 2.5-) 150424 C23 0.3- 0.5+ 150612 C23 (2.8- 0.2+) 150309 C23 0.8- 0.1+ 150424 C23 0.3+ 0.5- 150612 D09 (5.1- 1.6+) 150309 C23 1.7- 1.5- 150425 A71 0.6+ 0.1- 150612 D09 2.0- 1.5+ 150309 C23 0.4- 0.7- 150425 A71 0.8+ 0.5+ 150612 D09 1.5- 1.5- 150311 C23 1.2- 0.7+ 150425 A71 0.2+ 0.0 150614 C23 1.7- 1.1+ 150311 C23 1.1+ 0.2- 150426 367 0.8+ 0.1+ 150614 C23 0.7- 0.2- 150311 C23 0.1- 1.9- 150426 367 0.8+ 0.4- 150614 C23 0.8- 0.9+ 150311 C23 0.0 0.3+ 150426 367 0.4+ 0.2+ 150616 C23 (5.3- 0.9+) 150311 C23 1.9+ 0.8- 150428 C23 0.3+ 0.6- 150616 C23 1.2- 0.6+ 150311 C23 0.1+ 2.0- 150428 C23 0.1+ 0.6- 150625 C23 0.6+ 0.0 150311 C23 0.9+ 0.7- 150428 C23 0.3+ 0.7- 150626 C23 (2.6- 4.8-) 150311 C23 (1.3- 3.2+) 150428 C23 0.3+ 0.6- 150629 C23 (0.4+ 4.2-) 150311 C23 1.0+ 0.5- 150506 C23 0.7- 0.6+ 150630 C23 (1.6- 4.7-) 150311 C23 1.7- 0.7+ 150506 C23 0.4+ 0.4+ 150630 C23 (2.3- 4.5-) 150313 A77 0.4- 1.0- 150506 C23 0.4- 0.8+ 150630 C23 (2.0- 5.1-) 150313 A77 0.0 2.2- 150512 U69 0.6+ 0.2- 150701 C23 (0.0 7.5-) 150313 A77 0.7+ 0.5- 150512 U69 0.3+ 0.5- 150701 C23 (1.5- 2.8-) 150314 349 1.0+ 0.3- 150512 U69 0.4+ 0.0 150701 215 1.6- 1.2+ 150314 349 0.1+ 0.5- 150512 U69 0.5+ 0.5- 150701 215 0.4- 0.4- 150314 350 0.5+ 0.3+ 150512 970 0.4+ 0.2+ 150701 215 0.1+ 0.3- 150314 349 0.1+ 0.2+ 150512 970 0.3+ 0.2- 150709 C23 (0.7+ 6.1+) 150314 350 0.4+ 2.2+ 150513 C23 0.2+ 0.2- 150709 C23 0.7- 1.6+ 150314 350 1.7+ 1.4+ 150513 C23 0.3+ 0.2- 150709 C23 2.1- 1.2+ 150316 C23 1.1+ 0.4- 150513 C23 0.1+ 0.3- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2015 July 30