Nakano Note (Nakano wa Kangaeru noda) NK 3309 P/2015 B4 (Lemmon-PANSTARRS)
The following improved orbital elements, by T. Kobayashi, are from 78 observations 2015 Jan. 16 to 2016 Apr. 27. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.25 arc second. The comet has passed 1.59 AU from Jupiter on 2015 Apr. 9 UT. See the previous orbit in NK 3081 (= HICQ 2016). Epoch = 2015 Feb. 27.0 TT T = 2015 Feb. 19.92056 +/- 0.00541 (m.e.) TT Peri. = 227.59254 +/- 0.00107 Node = 267.21418 +/- 0.00046 (2000.0) Inc. = 1.74893 +/- 0.00001 q = 3.7584984 +/- 0.0000150 AU e = 0.5706298 +/- 0.0000063 a = 8.7535152 +/- 0.0001314 AU n' = 0.03805663 +/- 0.00000086 P = 25.898 +/- 0.0005822 years (+/- 0.21 day) The predicted orbit for the 2039 return is as follows: T = 2039 Dec. 6.24487 TT Epoch = 2039 Nov. 28.0 TT Peri. = 227.11038 e = 0.5643429 Node = 265.92194 (2000.0) a = 8.5835809 AU Inc. = 1.76024 n'= 0.03919235 q = 3.7394982 AU P = 25.148 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2015/ 160116 F51 0.3- 0.2- 160317 Q62 0.7- 0.2+ 150116 G96 0.2- 0.0 160209 F51 0.1- 0.3- 160317 Q62 0.4- 0.2+ 150116 G96 0.0 0.1+ 160209 F51 0.1- 0.2- 160317 Q62 0.0 0.1+ 150116 G96 0.1- 0.1- 160209 F51 0.0 0.2- 160331 F51 0.2+ 0.3- 150118 F51 0.0 0.1+ 160209 F51 0.0 0.2- 160331 F51 0.3+ 0.3- 150118 F51 0.1+ 0.0 160304 F51 0.0 0.0 160331 F51 0.2+ 0.0 150118 F51 0.1+ 0.1+ 160304 F51 0.0 0.1- 160331 F51 0.1+ 0.1- 150118 F51 0.1+ 0.0 160312 F51 0.0 0.1- 160401 F51 0.3+ 0.1- 150122 F51 0.2+ 0.0 160312 F51 0.0 0.3- 160401 F51 0.1+ 0.0 150122 F51 0.1+ 0.0 160312 F51 0.0 0.1- 160401 F51 0.1+ 0.0 150122 F51 0.1+ 0.0 160313 F51 0.0 0.1- 160401 F51 0.1+ 0.1- 150122 F51 0.0 0.1- 160313 F51 0.0 0.2- 160404 G96 0.2- 0.1- 150209 D29 0.4- 0.2+ 160313 F51 0.0 0.3- 160404 G96 0.6- 1.0+ 150209 D29 0.1- 0.2+ 160313 F51 0.0 0.2- 160404 G96 0.2+ 0.1+ 150209 D29 0.6- 0.2- 160314 F51 0.1- 0.1- 160404 G96 0.8- 0.8+ 150216 F51 0.1- 0.0 160314 F51 0.0 0.1+ 160410 F51 0.4+ 0.1- 150216 F51 0.1- 0.0 160314 F51 0.2+ 0.1+ 160410 F51 0.2+ 0.1- 150311 G96 0.3+ 0.1+ 160314 F51 0.1- 0.1- 160410 F51 0.4+ 0.2- 150311 G96 0.1+ 0.1- 160314 F51 0.3+ 0.2- 160410 F51 0.2+ 0.2- 150311 G96 0.1+ 0.1+ 160314 F51 0.1+ 0.0 160414 G96 0.5+ 0.5- 150311 G96 0.5+ 0.1- 160314 K92 0.3- 0.3+ 160414 G96 0.2+ 0.2- 150410 F51 0.1- 0.1+ 160314 K92 0.0 0.1- 160414 G96 0.2+ 0.3+ 150410 F51 0.0 0.0 160314 K92 0.1- 0.2+ 160414 G96 0.1+ 0.1+ 150410 F51 0.0 0.1+ 160314 K92 0.1+ 0.1+ 160427 215 0.8- 0.8+ 150410 F51 0.1+ 0.3- 160315 568 0.0 0.1- 160427 215 0.3- 0.6+ 2016/ 160315 568 0.1- 0.2- 160427 215 0.3+ 0.7+ 160116 F51 0.2- 0.1- 160315 568 0.0 0.1- ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2017 Feb. 4