Nakano Note (Nakano wa Kangaeru noda) NK 3044 P/LINEAR (2007 VA85)

The following improved orbital elements, by S. Nakano, are from 109 observations 2007 to 2016. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.43 arc second. The residuals of recovery observations on 2015 Nov. 18 were -375" for Right Ascension and +494" for Declination from 2007 orbit in MPO 140717 with the delta-T correction = -0.83 day. The comet has passed 0.67 AU from Jupiter on 2009 Jan. 23 and will pass 0.53 AU from Earth on 2016 Feb. 12 UT. Epoch = 2016 Apr. 2.0 TT T = 2016 Apr. 3.89029 +/- 0.00047 (m.e.) TT Peri. = 26.14436 +/- 0.00010 Node = 115.56560 +/- 0.00009 (2000.0) Inc. = 131.87706 +/- 0.00006 q = 1.1151604 +/- 0.0000011 AU e = 0.7360472 +/- 0.0000002 a = 4.2248478 +/- 0.0000013 AU n' = 0.11349781 +/- 0.00000005 P = 8.684 +/- 0.0000040 years T = 2007 July 28.35328 TT Epoch = 2007 Aug. 8.0 TT Peri. = 25.59533 e = 0.7376148 Node = 115.37581 (2000.0) a = 4.2057582 AU Inc. = 132.45945 n'= 0.11427142 q = 1.1035285 AU P = 8.625 years The predicted orbit for the 2024 return is as follows: T = 2024 Nov. 29.29931 TT Epoch = 2024 Nov. 26.0 TT Peri. = 26.01708 e = 0.7363206 Node = 115.70565 (2000.0) a = 4.2208196 AU Inc. = 132.02202 n'= 0.11366032 q = 1.1129433 AU P = 8.672 years The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2007/ 071107 704 0.0 0.2- 2008/ 071104 704 (0.2+ 2.2+) 071107 704 0.5+ 0.6+ 080601 291 1.3- 0.7+ 071104 704 0.6+ 0.7+ 071108 H55 0.4- 0.1- 080601 291 0.3- 0.1+ 071104 704 0.3+ 0.1+ 071108 H55 0.2- 0.3- 080601 291 0.0 0.3- 071105 704 1.0+ 0.3+ 071108 H55 0.8- 0.7- 080602 291 0.2- 0.4- 071105 704 0.3- 0.1- 071108 711 0.2- 0.4- 080602 291 0.1+ 0.3- 071105 703 1.3- 1.4- 071108 711 0.1- 1.4- 080602 291 0.0 0.2- 071105 703 0.8+ 0.5+ 071108 711 0.2- 0.1+ 080622 H55 1.2+ 0.0 071105 703 (3.2- 4.2-) 071108 673 0.3+ 0.0 2015/ 071105 704 0.4+ 0.1+ 071108 673 0.2+ 0.3- 151118 Q62 0.1+ 0.4+ 071105 703 0.6- 0.1+ 071108 673 0.1+ 0.1- 151118 Q62 0.1+ 0.5+ 071105 J95 0.0 0.1+ 071108 673 0.3- 0.1+ 151118 Q62 0.0 0.8+ 071105 J95 0.3+ 0.5- 071108 J95 0.2+ 1.1- 151216 Q62 0.3+ 1.0- 071105 J95 0.0 0.2+ 071108 J95 0.6+ 0.2- 151216 Q62 0.1+ 0.1- 071105 J95 0.0 0.4- 071109 711 0.5- 0.4- 2016/ 071106 673 0.2- 0.0 071109 711 0.5- 0.0 160101 Y00 0.7- 0.1+ 071106 673 0.2- 0.2- 071109 711 0.6- 0.6- 160101 Y00 0.1- 0.2- 071106 673 0.0 0.6- 071111 673 0.1- 0.2+ 160101 Y00 0.2- 0.3- 071106 673 0.2- 0.3- 071111 673 0.1- 0.2+ 160102 K91 0.1+ 0.1+ 071106 473 0.1- 0.1- 071111 673 0.1+ 0.2+ 160102 K91 0.2- 0.4- 071106 473 0.3- 0.7+ 071111 673 0.1- 0.2+ 160102 K91 0.1+ 0.0 071106 473 0.2+ 0.4+ 071111 620 0.0 0.7- 160102 K91 0.0 0.0 071106 595 0.2- 0.5- 071111 620 0.7+ 0.6+ 160102 K91 0.2- 0.3+ 071106 473 0.2- 0.1- 071111 620 0.4- 0.8- 160102 807 0.1+ 0.0 071106 595 0.1+ 0.5+ 071111 620 0.1- 0.1+ 160102 807 0.1- 0.0 071106 473 0.0 0.3- 071112 J95 0.2- 0.1- 160102 807 0.1+ 0.0 071106 235 0.8- 0.5+ 071112 J95 0.5- 0.4- 160108 Q62 0.0 0.0 071106 235 0.7+ 1.2+ 071112 J95 0.2- 0.3- 160108 Q62 0.1- 0.0 071106 B15 0.2- 0.3- 071115 J95 0.2- 0.4- 160110 W96 0.1- 0.2+ 071106 B15 0.3+ 0.1+ 071115 J95 0.3- 0.3- 160110 W96 0.3- 0.2- 071106 B15 0.3+ 0.5- 071115 J95 0.2- 0.1- 160110 W96 0.4+ 0.1+ 071107 H55 0.2- 0.1- 071116 147 0.5- 0.3- 160110 W96 0.3+ 0.2+ 071107 711 (0.7+ 2.2-) 071116 147 0.1- 0.3- 160110 Q62 0.0 0.1+ 071107 711 1.1+ 0.4- 071116 147 0.2+ 0.2- 160110 Q62 0.0 0.1- 071107 H55 0.3- 0.1- 071123 J95 0.4+ 0.2+ 160110 Q62 0.3+ 0.1+ 071107 711 0.9+ 0.6- 071123 J95 0.0 0.1- 160110 Q62 0.3+ 0.2+ 071107 H55 0.4+ 0.1- 071123 J95 0.1+ 0.5- 160110 Q62 0.2+ 0.0 071107 H55 0.1- 0.1- 071130 130 0.7+ 0.7+ 160110 Q62 0.1- 0.3- 071107 704 0.3- 0.5+ 071130 130 1.3+ 1.2+ ( ) -------- Rejected Obs.

Associate of the CBAT Syuichi Nakano 2016 Jan. 11

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