Nakano Note (Nakano wa Kangaeru noda) NK 4695 P/Christensen (2022 E1 = 2005 Nx [5N9EA05 = 6KBC755 = G5GV07] = 2015 PO210 [= P10bIPq = VMBB0EE])
The following improved orbital elements, by S. Nakano, are from 80 observations 2005 to 2022. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.37 arc second. Three objects in 2005/2006 were found from a non-perturbed orbit in April Monthly Comets with the residuals of +0.27 deg for Right Ascension and -0.04 deg for Declination on 2006 observations with the delta-T correction = +1.06 days. Also three objects in 2014/2015, including 2015 PO210, were found by R. Weryk. These observations are shown below. The comet has passed 0.51 AU from Jupiter on 1978 June 3 UT. Except this approach, no close approach to Major planets. See an orbit in CBET 5107. Epoch = 2022 Oct. 28.0 TT T = 2022 Oct. 10.16298 +/- 0.00054 (m.e.) TT Peri. = 145.11266 +/- 0.00009 Node = 108.94387 +/- 0.00003 (2000.0) Inc. = 19.88659 +/- 0.00001 q = 2.9561697 +/- 0.0000010 AU e = 0.2838394 +/- 0.0000002 a = 4.1278026 +/- 0.0000019 AU n' = 0.11752376 +/- 0.00000008 P = 8.386 +/- 0.0000059 years T = 2005 Dec. 25.44585 TT Epoch = 2005 Dec. 16.0 TT Peri. = 144.90028 e = 0.2851533 Node = 109.03282 (2000.0) a = 4.1210102 AU Inc. = 19.89313 n'= 0.11781445 q = 2.9458904 AU P = 8.366 years T = 2014 May 10.59431 TT Epoch = 2014 May 23.0 TT Peri. = 144.76016 e = 0.2835267 Node = 109.02639 (2000.0) a = 4.1347791 AU Inc. = 19.87618 n'= 0.11722645 q = 2.9624588 AU P = 8.408 years The predicted orbit for the 2031 return is as follows: T = 2031 Feb. 18.25228 TT Epoch = 2031 Feb. 23.0 TT Peri. = 144.58022 e = 0.2845105 Node = 108.86742 (2000.0) a = 4.1332808 AU Inc. = 19.89566 n'= 0.11729020 q = 2.9573192 AU P = 8.403 years Following identical objects in 2005/2006 were found from a non-perturbed orbit in April Monthly Comets. 5N9EA05 C2005 07 05.20631 13 36 17.38 +12 08 57.5 21.4 Vr G96 5N9EA05 C2005 07 05.20836 13 36 17.42 +12 08 54.7 21.1 Vr G96 5N9EA05 C2005 07 05.21042 13 36 17.49 +12 08 54.7 21.4 Vr G96 5N9EA05 C2005 07 05.21252 13 36 17.64 +12 08 52.5 22.8 Vr G96 6KBC755 C2006 05 23.42764 20 20 37.53 -18 13 43.0 20.4 Vr G96 6KBC755 C2006 05 23.43258 20 20 37.57 -18 13 44.5 21.3 Vr G96 6KBC755 C2006 05 23.43752 20 20 37.68 -18 13 45.5 20.4 Vr G96 6KBC755 C2006 05 23.44260 20 20 37.68 -18 13 46.8 20.6 Vr G96 G5GV07 C2006 06 17.41750 20 19 14.54 -20 38 49.8 20.7 Vc 691 G5GV07 C2006 06 17.43486 20 19 14.16 -20 38 57.6 20.8 Vc 691 G5GV07 C2006 06 17.45214 20 19 13.80 -20 39 05.0 20.6 Vc 691 Other Identical objects in 2014/2015 were found by R. Weryk. P10bIPq* C2014 05 26.43540 17 44 20.225-08 08 50.24 20.4 wL F51 P10bIPq C2014 05 26.45013 17 44 19.672-08 08 53.16 20.4 wL F51 P10bIPq C2014 05 26.47967 17 44 18.564-08 08 58.84 20.2 wL F51 VMBB0EE* C2014 06 22.31636 17 25 18.57 -10 18 12.1 19.7 Vq G96 VMBB0EE C2014 06 22.32155 17 25 18.33 -10 18 14.2 19.4 Vq G96 VMBB0EE C2014 06 22.32673 17 25 18.11 -10 18 16.0 19.6 Vq G96 K15PL0O* C2015 08 10.51769 23 35 20.671-24 27 40.49 21.7 wL~1VgBF51 K15PL0O C2015 08 10.52741 23 35 20.409-24 27 44.87 21.8 wL~1VgBF51 K15PL0O C2015 08 10.53703 23 35 20.168-24 27 49.66 21.8 wL~1VgBF51 K15PL0O C2015 08 10.54674 23 35 19.934-24 27 54.05 21.6 wL~1VgBF51 K15PL0O C2015 08 11.52146 23 34 56.588-24 35 35.96 21.6 wL~1VgBF51 K15PL0O C2015 08 11.53116 23 34 56.329-24 35 40.54 21.6 wL~1VgBF51 K15PL0O C2015 08 11.54084 23 34 56.068-24 35 45.16 21.5 wL~1VgBF51 K15PL0O C2015 08 11.55054 23 34 55.823-24 35 49.78 21.6 wL~1VgBF51 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2005/ 2022/ 220308 673 0.1+ 0.0 050705 G96 0.1- 0.2+ 220302 G96 0.4- 0.3+ 220308 I52 0.4- 0.0 050705 G96 0.3- 1.3- 220302 G96 0.2+ 0.1+ 220308 673 0.1+ 0.2- 050705 G96 0.0 0.0 220302 G96 0.1+ 0.1- 220308 H06 0.3+ 0.3- 050705 G96 1.3+ 0.9- 220302 G96 0.0 0.2- 220308 I52 0.0 0.3- 2006/ 220302 G96 0.2+ 0.0 220308 H06 0.2+ 0.1- 060523 G96 0.5- 0.2+ 220302 G96 0.1- 0.4+ 220308 Q11 0.4- 0.3- 060523 G96 0.8- 0.0 220302 I52 0.4- 0.2+ 220308 Q11 0.4- 0.3- 060523 G96 0.0 0.3+ 220302 I52 0.4- 0.1+ 220309 106 0.2- 0.3+ 060523 G96 0.9- 0.3+ 220302 I52 0.3+ 0.0 220309 106 0.3+ 0.3- 060617 691 0.9- 0.1+ 220302 G96 0.0 0.4+ 220309 106 0.9+ 0.0 060617 691 1.1- 0.3- 220302 G96 0.2+ 0.2+ 220310 106 0.1+ 0.2- 060617 691 1.1- 0.3- 220304 L06 0.2+ 0.6+ 220310 106 0.0 0.0 2014/ 220304 L06 0.1+ 0.3+ 220310 F52 0.4+ 0.0 140526 F51 0.2+ 0.0 220304 106 0.2+ 0.4+ 220310 F52 0.6+ 0.1+ 140526 F51 0.2+ 0.0 220304 L06 0.2+ 0.2+ 220310 F52 0.4+ 0.0 140526 F51 0.2+ 0.0 220304 L06 0.0 0.5+ 220310 F52 0.3+ 0.0 140622 G96 0.2+ 0.2+ 220304 L06 0.1+ 0.3+ 220404 Q11 1.0- 0.4- 140622 G96 0.1+ 0.0 220304 106 0.4- 0.2+ 220404 Q11 1.0- 0.3- 140622 G96 0.3+ 0.2+ 220304 106 0.4+ 0.2- 220409 G96 0.0 0.0 2015/ 220305 L01 0.6- 0.1+ 220409 G96 0.1+ 0.1- 150810 F51 0.1+ 0.2- 220305 L01 0.6- 0.5- 220409 G96 0.3+ 0.1- 150810 F51 0.1- 0.1+ 220305 L01 0.4- 0.5+ 220409 G96 0.2+ 0.2- 150810 F51 0.2- 0.1- 220306 858 0.3- 0.2+ 220413 G96 0.4- 0.3- 150810 F51 0.0 0.1+ 220306 858 0.0 0.5+ 220413 G96 0.3- 0.1+ 150811 F51 0.2+ 0.0 220306 858 0.1- 0.2+ 220413 G96 0.0 0.1+ 150811 F51 0.1+ 0.1+ 220307 204 0.1+ 0.0 220413 G96 0.2- 0.3+ 150811 F51 0.0 0.0 220307 204 0.1+ 0.6+ 150811 F51 0.0 0.0 220308 I52 0.3+ 0.5+ ( ) -------- Rejected Obs.
Associate of the CBAT Syuichi Nakano 2022 Apr. 22