Nakano Note (Nakano wa Kangaeru noda) NK 3087 P/2015 X1 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 63 observations 2015 Aug. 12 to 2016 Jan. 3. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.41 arc second. See an orbit in NK 3031. Following LINEAR observations mightbe identical with this comet. 8Y383BC* C2008 12 31.11418 01 02 39.26 -06 16 13.3 18.9 Vr 703 8Y383BC C2008 12 31.12264 01 02 39.76 -06 16 10.2 19.8 Vr 703 8Y383BC C2008 12 31.13120 01 02 40.52 -06 16 04.6 19.5 Vr 703 8Y383BC C2008 12 31.13973 01 02 41.06 -06 16 00.9 19.6 Vr 703 Object Date Residual(deg) Mag Code Ob delta-T Corrected Publ. 8Y383BC 2008 12 31.11 0.00 0.00 18.9 703 4 -0.005 0.0 0.0 ONS 2008 12 31.14 0.00 0.00 19.6 703 -0.1 -0.1 ONS Epoch = 2015 Oct. 25.0 TT T = 2015 Oct. 10.67896 +/- 0.00197 (m.e.) TT Peri. = 219.03110 +/- 0.00078 Node = 161.79100 +/- 0.00007 (2000.0) Inc. = 12.16214 +/- 0.00002 q = 2.1035375 +/- 0.0000035 AU e = 0.4204011 +/- 0.0000021 a = 3.6292988 +/- 0.0000040 AU n' = 0.14255091 +/- 0.00000023 P = 6.914 +/- 0.0000114 years The predicted orbit for the 2022 return is as follows: T = 2022 Sept. 6.60180 TT Epoch = 2022 Sept.18.0 TT Peri. = 218.73987 e = 0.4192327 Node = 161.75746 (2000.0) a = 3.6366685 AU Inc. = 12.15178 n'= 0.14211781 q = 2.1120581 AU P = 6.935 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 151202 H01 0.1+ 0.0 151204 C10 0.1- 0.6+ 150812 F51 0.0 0.1+ 151202 H01 0.3+ 0.0 151204 C10 0.3- 0.2+ 150812 F51 0.0 0.2+ 151202 H01 0.1+ 0.0 151205 568 0.0 0.0 150812 F51 0.1+ 0.1- 151202 H06 0.3+ 0.0 151205 568 0.0 0.0 150812 F51 0.4+ 0.1+ 151202 H06 0.1+ 0.4+ 151205 568 0.0 0.0 150923 F51 0.1- 0.1- 151202 H06 0.0 0.1+ 151206 215 0.4- 0.9+ 150923 F51 0.1- 0.1- 151202 K51 0.3- 0.3+ 151206 215 0.4- 0.6+ 150923 F51 0.0 0.1- 151202 K51 0.2- 0.2+ 151206 215 0.6- 0.1+ 150923 F51 0.1- 0.1- 151202 K51 0.2- 0.2+ 151206 958 0.1- 1.2+ 151009 703 0.3+ 1.0+ 151203 H01 0.0 0.1- 151206 958 1.0+ 1.6+ 151009 703 0.2- 0.3- 151203 H01 0.0 0.1- 151208 372 0.1- 0.7+ 151009 703 0.8- 0.1+ 151203 H01 0.1+ 0.2- 151208 372 0.7- 1.2+ 151009 703 0.2- 0.5+ 151203 H01 0.0 0.0 151208 372 0.2+ 0.8+ 151015 703 0.6- 0.6+ 151204 691 0.2- 0.5+ 2016/ 151015 703 0.0 0.1+ 151204 691 0.2- 0.6+ 160103 F51 0.2+ 0.0 151015 703 0.5- 0.3- 151204 691 0.2+ 1.7+ 160103 F51 0.0 0.1- 151015 703 1.1- 0.1+ 151204 691 0.1- 0.6+ 160103 F51 0.0 0.1+ 151201 F51 0.0 0.3- 151204 H01 0.3+ 0.2- 160103 F51 0.0 0.0 151201 F51 0.0 0.3- 151204 H01 0.4+ 0.0 160103 F51 0.0 0.0 151201 F51 0.0 0.3- 151204 H01 0.2+ 0.1- 160103 F51 0.0 0.1+ 151201 F51 0.1+ 0.2- 151204 H01 0.3+ 0.3- 160103 F51 0.1+ 0.1- 151202 H01 0.1+ 0.0 151204 C10 0.2+ 0.8+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2016 Apr. 1