Nakano Note (Nakano wa Kangaeru noda) NK 4708 P/2022 C2 (PANSTARRS)
The following improved orbital elements, by S. Nakano, are from 142 observations 2022 Feb. 2 to May 16. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.39 arc second. The comet will pass 1.56 AU from Saturn on 2028 July 19 UT. See an orbit in CBET 5098. Epoch = 2022 Aug. 9.0 TT T = 2022 Aug. 6.56110 +/- 0.04486 (m.e.) TT Peri. = 89.29609 +/- 0.00911 Node = 135.27127 +/- 0.00105 (2000.0) Inc. = 9.97963 +/- 0.00011 q = 3.3704709 +/- 0.0000616 AU e = 0.4425868 +/- 0.0000252 a = 6.0466291 +/- 0.0002943 AU n' = 0.06628787 +/- 0.00000484 P = 14.869 +/- 0.0010856 years (+/- 0.40 day) The predicted orbit for the 2037 return is as follows: T = 2037 July 14.91437 TT Epoch = 2037 July 1.0 TT Peri. = 91.53436 e = 0.4345752 Node = 132.71996 (2000.0) a = 6.0992835 AU Inc. = 9.92628 n'= 0.06543135 q = 3.4486859 AU P = 15.063 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2022/ 220301 215 0.3- 0.9+ 220410 W68 0.2- 0.2+ 220202 F52 0.2+ 0.1- 220301 215 0.3- 0.7+ 220410 F52 0.4+ 0.3+ 220202 F52 0.3+ 0.1- 220301 215 0.3- 0.6+ 220410 F52 0.4+ 0.3+ 220202 F52 0.3+ 0.1+ 220301 K77 0.6+ 0.1- 220410 F52 0.3+ 0.3+ 220202 F52 0.2+ 0.1- 220301 K77 0.6- 0.3- 220410 F52 0.4+ 0.3+ 220203 L01 0.0 0.5- 220301 X03 0.2+ 0.5+ 220413 T08 0.4- 0.1+ 220203 L01 0.1- 0.0 220301 X03 0.2- 0.0 220413 T08 0.6+ 0.1+ 220203 L01 0.2- 0.2+ 220301 X03 0.2- 0.4- 220413 T08 1.0- 0.1+ 220203 L01 0.3+ 0.4- 220301 X03 0.0 0.8- 220413 T08 0.2- 0.1+ 220203 033 0.3+ 0.2- 220322 K77 1.1+ 0.1- 220421 T08 0.6- 0.1+ 220203 033 0.3+ 0.1- 220322 K77 0.3- 1.1+ 220421 T08 0.0 0.5+ 220203 033 0.6+ 0.1- 220323 G96 0.3- 0.1+ 220421 T08 0.0 0.0 220203 568 0.3+ 0.1- 220323 G96 0.0 0.0 220421 T08 0.2+ 0.1+ 220203 568 0.2+ 0.1- 220323 G96 0.4- 0.6- 220424 867 0.2+ 0.3+ 220203 568 0.3+ 0.0 220323 G96 0.2- 0.3- 220424 867 0.2+ 0.2+ 220204 Z08 0.2+ 0.6- 220328 T08 0.0 0.0 220424 867 0.5+ 0.4+ 220204 Z08 0.1+ 0.8- 220328 T08 0.4- 0.2- 220424 867 0.1+ 0.3+ 220205 H36 0.1- 0.2- 220328 T08 1.2- 1.5- 220425 T08 0.0 0.7- 220205 H36 0.2- 0.3+ 220328 T08 0.1+ 0.2+ 220425 T08 0.1+ 0.3- 220205 H36 0.6+ 0.5+ 220329 W68 0.2- 0.3+ 220425 T08 1.2- 0.1- 220206 L27 0.6- 0.1+ 220329 W68 0.1- 0.0 220425 T08 0.3+ 0.4+ 220206 L27 0.4- 0.2+ 220329 W68 0.1- 0.3- 220426 W68 0.2+ 0.0 220206 204 0.2- 0.2- 220329 W68 0.4+ 0.1- 220426 W68 1.0+ 0.2+ 220206 L27 0.2+ 0.2- 220401 T08 0.6- 0.6- 220426 W68 0.0 0.1- 220206 204 0.3- 0.0 220401 T08 0.3+ 0.7- 220426 W68 0.1+ 0.4- 220206 204 0.0 0.2- 220401 T08 0.1+ 0.1+ 220427 T05 0.1- 0.2+ 220206 H06 0.2- 0.4+ 220401 T08 1.0- 0.1- 220427 T05 0.2+ 0.0 220206 H06 0.4- 0.2+ 220403 G96 0.0 0.0 220427 T05 0.7- 0.0 220209 I93 0.2- 0.6+ 220403 G96 0.2+ 0.1- 220427 T05 0.8+ 0.2+ 220209 I93 0.6+ 0.1+ 220403 G96 0.1+ 0.2- 220428 215 0.2+ 0.1- 220211 C95 0.5+ 0.4+ 220403 G96 0.0 0.1- 220428 215 0.3+ 0.0 220211 C95 0.6- 0.5+ 220406 W68 0.7- 0.2- 220428 215 0.4+ 0.1- 220212 G96 0.4+ 0.4+ 220406 W68 0.4- 0.4- 220430 G96 0.1- 0.1+ 220212 G96 0.3- 0.1+ 220406 W68 0.5+ 0.2- 220430 G96 0.0 0.1+ 220212 G96 0.9- 0.1- 220406 W68 0.7+ 0.6- 220430 G96 0.1+ 0.1+ 220212 G96 0.4+ 0.1+ 220407 T05 0.4- 0.1+ 220430 G96 0.0 0.2+ 220212 F52 0.2+ 0.1- 220407 T05 0.5+ 0.1+ 220501 M22 0.0 0.2+ 220212 F52 0.1+ 0.0 220407 T05 0.3- 0.5+ 220501 M22 0.3+ 0.0 220212 F52 0.3+ 0.0 220407 T05 0.8- 0.6+ 220501 M22 0.2+ 0.4- 220212 F52 0.3+ 0.0 220409 G96 0.0 0.1+ 220501 M22 0.0 0.2+ 220213 K51 0.2- 0.3- 220409 G96 0.1+ 0.0 220510 W62 0.5+ 0.1+ 220213 K51 0.3- 0.3- 220409 G96 0.1+ 0.0 220510 W62 0.3+ 0.1+ 220213 K51 0.1- 0.1- 220409 G96 0.0 0.1+ 220510 W62 0.9+ 0.2+ 220225 H06 0.3+ 0.6- 220409 Q21 0.1- 0.1- 220516 W68 0.9- 0.3- 220225 H06 0.6+ 0.9- 220409 Q21 0.5+ 0.2+ 220516 W68 0.4- 1.0- 220227 Q11 0.6- 0.1- 220410 W68 0.8+ 0.1- 220516 W68 0.1+ 0.2+ 220227 Q11 0.7- 0.2- 220410 W68 0.1- 0.1- 220516 W68 0.3+ 0.0 220227 Q11 0.7- 0.2- 220410 W68 0.3+ 0.3+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 May 23