Nakano Note (Nakano wa Kangaeru noda) NK 4066 C/2019 Y1 (ATLAS)
The following improved orbital elements, by S. Nakano, are from 221 observations 2019 Dec. 16 to 2020 Mar. 13. Perturbations by Mercury to Neptune and three minor planets, Ceres, Pallas and Vesta, were taken into account. The mean residual is +/- 0.61 arc second. The comet is now brightening (visual mag.= 8). See an orbit in HICQ 2020. Epoch = 2020 Mar. 12.0 TT T = 2020 Mar. 15.56441 +/- 0.00026 (m.e.) TT Peri. = 57.50193 +/- 0.00088 Node = 31.36761 +/- 0.00025 (2000.0) Inc. = 73.34682 +/- 0.00016 q = 0.8377734 +/- 0.0000099 AU e = 0.9963516 +/- 0.0000156 1/a = +0.0043548 +/- 0.0000186 1/AU origin = +0.004793 (Q= 6) future = +0.004377 The following residuals in seconds of arc are from the above orbital elements: Date Code Residual(") Date Code Residual(") Date Code Residual(") 2019/ 191224 X31 0.7- 0.3- 200201 G40 0.4+ 0.0 191216 T05 (2.5+ 0.4-) 191224 T05 0.5+ 0.2- 200201 G40 0.2+ 0.0 191216 T05 0.3+ 0.0 191224 T05 1.1+ 0.2- 200201 G40 0.6+ 0.1- 191216 T05 1.7+ 0.5+ 191224 T05 1.0+ 0.2- 200201 G40 0.2+ 0.1+ 191216 T05 (3.2+ 0.8-) 191224 T12 0.4- 0.1- 200201 G40 0.5+ 0.0 191217 807 0.2- 0.5- 191224 T12 0.5- 0.1- 200203 H06 0.8- 0.1- 191217 807 0.1+ 0.4- 191224 T12 0.5- 0.1- 200203 H06 0.6- 0.2- 191217 807 0.0 0.5- 191224 T12 0.5- 0.2- 200203 H06 0.5- 0.1+ 191217 Q62 0.2+ 0.2- 191224 T05 0.7+ 0.6+ 200203 C35 0.5- 0.3+ 191217 Q62 0.1+ 0.1- 191225 Q62 0.3+ 0.0 200203 C35 0.7- 0.8+ 191217 E23 1.1+ 0.1+ 191225 Q62 0.8+ 0.1- 200203 C35 1.3- 0.2+ 191217 Q62 0.1- 0.1- 191225 Q62 0.3+ 0.2+ 200204 367 0.3- 0.1+ 191217 E23 0.1+ 0.7- 191225 Q62 0.4+ 0.2+ 200204 367 0.2+ 0.1- 191217 E23 1.0+ 0.7+ 191225 Q62 0.1- 0.1+ 200204 367 0.3+ 0.1+ 191218 807 0.1+ 0.3- 191225 Q62 0.2- 0.3+ 200204 367 0.0 0.1- 191218 807 0.3+ 0.4- 191226 Q38 0.3+ 0.7- 200206 B74 0.5- 0.3- 191218 Q62 1.7- 0.4- 191226 Q38 0.8+ 1.4- 200206 B74 0.9- 0.0 191218 Q62 1.8- 0.3+ 191226 Q38 0.4+ 0.6- 200206 B74 0.1+ 0.1- 191218 Q62 0.5- 0.2- 191228 X31 0.2- 0.1- 200207 349 0.0 0.4- 191218 194 0.3- 0.1- 191228 X31 0.9- 0.4- 200207 349 0.2- 0.2- 191218 194 0.1+ 0.7- 191228 349 0.2- 0.3+ 200209 349 0.3- 0.1- 191218 194 0.4- 0.2- 191228 349 0.7+ 0.6- 200209 349 0.1- 0.1- 191218 194 0.9- 0.8- 191228 349 0.1+ 1.1- 200209 349 0.1- 0.1- 191218 194 0.3+ 0.7- 191228 587 0.0 1.2- 200211 349 0.1+ 0.2- 191219 Q38 0.4+ 1.4- 191228 587 0.5+ 0.8- 200211 349 0.2+ 0.0 191219 Q38 0.2- 0.6+ 191230 Q62 0.5+ 0.8- 200211 D95 0.2- 0.1- 191219 Q38 0.5- 1.4+ 191230 Q62 0.3+ 1.0- 200211 349 0.1+ 0.1- 191220 I47 0.3+ 0.9+ 191230 587 0.9+ 0.1+ 200211 D95 0.6- 0.4- 191220 I47 0.4+ 0.9+ 191230 587 0.7+ 0.5+ 200211 349 0.1+ 0.2- 191220 I47 0.2+ 1.3- 191230 587 0.7+ 0.3+ 200211 D95 0.4- 0.5- 191220 X02 0.2+ 0.1+ 191231 X74 1.1- 0.2+ 200211 A71 0.5- 0.6- 191220 X02 0.3- 0.3+ 191231 X74 0.3- 0.4+ 200211 A71 0.5- 0.0 191220 T05 0.1+ 1.1- 191231 X74 1.0+ 0.7+ 200211 A71 0.4- 1.1- 191220 T05 0.4+ 0.4- 2020/ 200212 A77 0.0 1.3+ 191220 T05 1.5+ 0.1- 200101 595 0.0 0.3- 200212 A77 0.1+ 1.1+ 191220 T05 0.4- 0.0 200101 595 0.5+ 0.1- 200212 A77 0.0 0.4+ 191220 J04 0.3+ 0.0 200101 595 0.1- 0.3- 200212 A77 0.3- 1.1+ 191220 J04 0.1+ 0.0 200102 349 0.5- 0.4+ 200213 B74 1.7+ 0.5- 191220 J04 0.1+ 0.2+ 200102 349 0.8- 0.7+ 200213 B74 0.7+ 0.7- 191221 807 0.1- 0.5- 200103 T08 0.8+ 0.1+ 200213 I81 0.1- 0.1+ 191221 807 0.3- 0.1- 200103 T08 0.2+ 0.1- 200213 I81 0.9- 0.8- 191221 807 0.3- 0.3- 200103 T08 1.5+ 0.5+ 200213 I81 0.8- 0.5- 191221 807 0.2- 0.1- 200103 T08 0.9+ 0.1- 200213 B74 0.4- 0.6- 191221 W88 0.2+ 0.5- 200103 349 0.1+ 0.4- 200214 367 0.4- 0.6- 191221 W88 0.1- 0.7- 200103 349 0.7+ 0.5+ 200214 367 0.4+ 0.4- 191221 J04 0.2+ 0.1+ 200104 I52 0.8+ 0.2- 200214 367 0.1+ 0.4- 191221 J04 0.3+ 0.0 200104 I52 0.7+ 0.4- 200215 349 0.2- 0.7- 191221 J04 0.3+ 0.0 200104 I52 (0.1+ 2.2-) 200215 349 0.0 0.5- 191222 W76 0.4+ 1.6+ 200104 204 0.4+ 0.5+ 200215 349 0.3+ 0.1- 191222 W76 0.0 0.8+ 200104 204 1.6+ 0.4- 200215 215 0.0 0.2- 191222 W76 0.7- 1.1+ 200105 X31 0.1+ 0.0 200215 215 0.0 0.2- 191222 W76 0.5- 1.3+ 200105 X31 0.2- 0.0 200215 215 0.8- 0.5- 191222 W76 0.5- 1.2+ 200105 I52 0.3+ 1.1- 200219 B74 0.1+ 0.6- 191222 W76 1.4- 1.0+ 200105 I52 0.7+ 0.3- 200219 B74 0.4+ 0.5- 191222 W76 0.5+ 1.5+ 200105 I52 1.6+ 0.7+ 200219 B74 0.5- 0.6- 191222 W76 0.4+ 0.9+ 200106 215 0.4+ 0.7+ 200223 367 0.1- 0.5- 191222 W76 0.4- 0.3+ 200106 215 0.3+ 0.5+ 200223 367 0.2- 0.2- 191222 W76 0.8- 1.3+ 200106 215 0.8+ 0.5+ 200223 367 0.1- 0.5- 191222 474 0.1- 0.7- 200106 A77 0.6- 1.6+ 200223 I81 0.2+ 0.6+ 191222 474 0.3+ 0.2- 200106 A77 0.7+ 0.9+ 200223 I81 0.3- 0.2+ 191222 474 0.4+ 0.2- 200106 A77 (1.5+ 2.5+) 200223 I81 0.4+ 0.1+ 191222 J04 0.1+ 0.2+ 200113 349 0.4+ 0.1+ 200223 I81 0.3+ 0.7- 191222 J04 0.3+ 0.0 200113 349 0.8+ 0.4+ 200224 349 0.2- 0.3- 191222 J04 0.6+ 0.3+ 200113 C95 0.5- 0.3+ 200224 349 0.0 0.2- 191223 G39 0.0 0.2- 200113 C95 0.4- 0.4+ 200224 349 0.1+ 0.7- 191223 G39 1.1+ 0.6- 200114 H06 0.7+ 1.9+ 200228 G23 0.3- 0.5- 191223 G39 0.3+ 0.0 200114 H06 0.7+ 1.6+ 200228 G23 0.2+ 0.4- 191223 G39 0.5- 0.8+ 200118 204 0.3+ 0.4- 200228 G23 1.5+ 0.1+ 191223 G39 0.5+ 0.4- 200118 204 0.4- 0.5- 200311 A77 0.8- 0.1+ 191223 G39 0.8+ 0.3+ 200131 A77 0.0 0.9+ 200311 A77 1.2- 0.8+ 191223 G39 0.9+ 0.9- 200131 A77 0.5- 1.7+ 200311 A77 0.1- 0.5- 191223 J04 0.3+ 0.2- 200131 A77 0.2+ 1.5+ 200313 A77 0.7+ 1.1+ 191223 J04 0.3- 0.3+ 200201 349 0.1- 0.2- 200313 A77 1.1+ 0.1- 191223 J04 0.0 0.0 200201 349 0.1+ 0.2+ 200313 A77 1.5+ 1.7+ 191224 X31 0.1+ 0.4+ 200201 349 0.1+ 0.3+ 200313 A77 0.5- 1.3+ 191224 X31 0.4- 0.2- 200201 G40 0.5+ 0.0 ( ) -------- Rejected Obs. Altitudes are some uncertainty because they are computed from the positions on 0h TT. At starting 2020/ R. A. (2000) Decl. Delta r Daily motion Elong. Phase Mag. Astron. Twilight 0h TT h m o , AU AU , o o o m1 h o A o Mar. 15 00 04.60 +30 01.2 1.480 0.838 55.9/ 8 32.7 39.9 8.6 -0.9 231.3 16 00 05.19 +30 56.6 1.471 0.838 56.3/ 8 33.1 40.4 8.6 +0.0 230.9 17 00 05.80 +31 52.4 1.463 0.838 56.7/ 8 33.5 41.0 8.6 +0.9 230.4 18 00 06.42 +32 48.6 1.454 0.839 57.2/ 8 34.0 41.5 8.6 +1.9 230.0 19 00 07.06 +33 45.2 1.445 0.840 57.6/ 8 34.4 42.1 8.5 +2.8 229.6 20 00 07.73 +34 42.3 1.436 0.842 58.1/ 8 34.9 42.7 8.5 +3.7 229.1 21 00 08.41 +35 39.8 1.426 0.844 58.6/ 8 35.5 43.2 8.5 +4.6 228.6 22 00 09.12 +36 37.8 1.417 0.846 59.2/ 9 36.0 43.8 8.5 +5.5 228.1 23 00 09.86 +37 36.3 1.407 0.849 59.7/ 9 36.6 44.4 8.5 +6.4 227.6 24 00 10.63 +38 35.3 1.397 0.853 60.3/ 9 37.2 45.0 8.5 +7.2 227.0 25 00 11.43 +39 34.9 1.388 0.856 60.9/ 9 37.8 45.6 8.5 +8.1 226.5 26 00 12.27 +40 35.0 1.378 0.860 61.5/ 9 38.4 46.1 8.5 +9.0 225.9 27 00 13.14 +41 35.8 1.368 0.865 62.2/ 9 39.1 46.7 8.5 +9.9 225.3 28 00 14.06 +42 37.1 1.358 0.869 62.9/ 10 39.8 47.2 8.6 +10.7 224.6 29 00 15.03 +43 39.1 1.348 0.875 63.6/ 10 40.4 47.8 8.6 +11.6 224.0 30 00 16.05 +44 41.8 1.337 0.880 64.4/ 10 41.1 48.3 8.6 +12.4 223.3 31 00 17.12 +45 45.1 1.327 0.886 65.1/ 10 41.9 48.8 8.6 +13.2 222.6 Apr. 1 00 18.26 +46 49.2 1.317 0.892 65.9/ 11 42.6 49.3 8.6 +14.0 221.9 2 00 19.46 +47 54.0 1.307 0.899 66.8/ 11 43.4 49.8 8.6 +14.9 221.1 3 00 20.74 +48 59.5 1.297 0.905 67.6/ 11 44.1 50.2 8.6 +15.7 220.3 4 00 22.09 +50 05.9 1.287 0.913 68.5/ 11 44.9 50.7 8.7 +16.4 219.5 5 00 23.54 +51 13.0 1.277 0.920 69.4/ 12 45.7 51.1 8.7 +17.2 218.6 6 00 25.09 +52 20.9 1.267 0.928 70.4/ 12 46.5 51.5 8.7 +18.0 217.7 7 00 26.75 +53 29.7 1.257 0.936 71.4/ 13 47.3 51.8 8.7 +18.7 216.8 8 00 28.53 +54 39.3 1.248 0.944 72.3/ 13 48.1 52.2 8.7 +19.5 215.8 9 00 30.45 +55 49.8 1.238 0.952 73.4/ 13 48.9 52.5 8.8 +20.2 214.8 10 00 32.53 +57 01.1 1.229 0.961 74.4/ 14 49.8 52.7 8.8 +20.9 213.8 11 00 34.78 +58 13.3 1.220 0.970 75.5/ 14 50.6 53.0 8.8 +21.5 212.7 12 00 37.23 +59 26.3 1.211 0.979 76.5/ 15 51.5 53.2 8.8 +22.2 211.6 13 00 39.90 +60 40.1 1.202 0.989 77.6/ 15 52.3 53.4 8.9 +22.8 210.5 14 00 42.83 +61 54.8 1.194 0.998 78.7/ 16 53.2 53.6 8.9 +23.4 209.3 15 00 46.05 +63 10.3 1.185 1.008 79.8/ 17 54.1 53.7 8.9 +24.0 208.1 16 00 49.62 +64 26.5 1.177 1.018 80.9/ 18 55.0 53.8 8.9 +24.6 206.8 17 00 53.59 +65 43.3 1.170 1.029 81.9/ 18 55.9 53.9 9.0 +25.1 205.5 18 00 58.03 +67 00.8 1.163 1.039 83.0/ 19 56.7 53.9 9.0 +25.6 204.2 19 01 03.02 +68 18.8 1.156 1.050 84.1/ 21 57.6 53.9 9.0 +26.1 202.8 20 01 08.69 +69 37.1 1.149 1.060 85.1/ 22 58.5 53.9 9.1 +26.5 201.4 21 01 15.16 +70 55.7 1.143 1.071 86.1/ 23 59.4 53.9 9.1 +26.9 200.0 22 01 22.62 +72 14.2 1.137 1.082 87.1/ 25 60.3 53.8 9.1 +27.2 198.5 23 01 31.31 +73 32.4 1.132 1.093 88.0/ 27 61.2 53.7 9.2 +27.5 197.0 24 01 41.52 +74 50.0 1.127 1.105 88.9/ 29 62.1 53.6 9.2 +27.8 195.4 25 01 53.67 +76 06.3 1.122 1.116 89.8/ 32 63.0 53.4 9.2 +28.1 193.8 26 02 08.27 +77 20.6 1.118 1.128 90.5/ 36 63.8 53.2 9.3 +28.2 192.2 27 02 26.04 +78 32.1 1.115 1.139 91.3/ 40 64.7 53.0 9.3 +28.4 190.6 28 02 47.86 +79 39.2 1.112 1.151 91.9/ 45 65.6 52.8 9.3 +28.5 189.0 29 03 14.77 +80 40.2 1.110 1.163 92.5/ 52 66.4 52.6 9.4 +28.5 187.3 30 03 47.80 +81 32.2 1.108 1.175 93.0/ 60 67.3 52.3 9.4 +28.5 185.7 May 1 04 27.48 +82 12.1 1.106 1.187 93.4/ 70 68.1 52.0 9.5 +28.5 184.0 At ending 2020/ R. A. (2000) Decl. Delta r Daily motion Elong. Phase Mag. Astron. Twilight 0h TT h m o , AU AU , o o o m1 h o A o Mar. 15 00 04.60 +30 01.2 1.480 0.838 55.9/ 8 32.7 39.9 8.6 +5.9 123.0 16 00 05.19 +30 56.6 1.471 0.838 56.3/ 8 33.1 40.4 8.6 +5.8 124.3 17 00 05.80 +31 52.4 1.463 0.838 56.7/ 8 33.5 41.0 8.6 +5.6 125.6 18 00 06.42 +32 48.6 1.454 0.839 57.2/ 8 34.0 41.5 8.6 +5.5 126.9 19 00 07.06 +33 45.2 1.445 0.840 57.6/ 8 34.4 42.1 8.5 +5.4 128.1 20 00 07.73 +34 42.3 1.436 0.842 58.1/ 8 34.9 42.7 8.5 +5.4 129.4 21 00 08.41 +35 39.8 1.426 0.844 58.6/ 8 35.5 43.2 8.5 +5.3 130.7 22 00 09.12 +36 37.8 1.417 0.846 59.2/ 9 36.0 43.8 8.5 +5.3 132.0 23 00 09.86 +37 36.3 1.407 0.849 59.7/ 9 36.6 44.4 8.5 +5.4 133.3 24 00 10.63 +38 35.3 1.397 0.853 60.3/ 9 37.2 45.0 8.5 +5.4 134.6 25 00 11.43 +39 34.9 1.388 0.856 60.9/ 9 37.8 45.6 8.5 +5.5 135.9 26 00 12.27 +40 35.0 1.378 0.860 61.5/ 9 38.4 46.1 8.5 +5.6 137.1 27 00 13.14 +41 35.8 1.368 0.865 62.2/ 9 39.1 46.7 8.5 +5.8 138.4 28 00 14.06 +42 37.1 1.358 0.869 62.9/ 10 39.8 47.2 8.6 +5.9 139.6 29 00 15.03 +43 39.1 1.348 0.875 63.6/ 10 40.4 47.8 8.6 +6.1 140.9 30 00 16.05 +44 41.8 1.337 0.880 64.4/ 10 41.1 48.3 8.6 +6.4 142.1 31 00 17.12 +45 45.1 1.327 0.886 65.1/ 10 41.9 48.8 8.6 +6.7 143.4 Apr. 1 00 18.26 +46 49.2 1.317 0.892 65.9/ 11 42.6 49.3 8.6 +7.0 144.6 2 00 19.46 +47 54.0 1.307 0.899 66.8/ 11 43.4 49.8 8.6 +7.3 145.8 3 00 20.74 +48 59.5 1.297 0.905 67.6/ 11 44.1 50.2 8.6 +7.7 147.0 4 00 22.09 +50 05.9 1.287 0.913 68.5/ 11 44.9 50.7 8.7 +8.2 148.2 5 00 23.54 +51 13.0 1.277 0.920 69.4/ 12 45.7 51.1 8.7 +8.6 149.4 6 00 25.09 +52 20.9 1.267 0.928 70.4/ 12 46.5 51.5 8.7 +9.1 150.5 7 00 26.75 +53 29.7 1.257 0.936 71.4/ 13 47.3 51.8 8.7 +9.7 151.7 8 00 28.53 +54 39.3 1.248 0.944 72.3/ 13 48.1 52.2 8.7 +10.2 152.8 9 00 30.45 +55 49.8 1.238 0.952 73.4/ 13 48.9 52.5 8.8 +10.9 153.9 10 00 32.53 +57 01.1 1.229 0.961 74.4/ 14 49.8 52.7 8.8 +11.5 155.0 11 00 34.78 +58 13.3 1.220 0.970 75.5/ 14 50.6 53.0 8.8 +12.2 156.0 12 00 37.23 +59 26.3 1.211 0.979 76.5/ 15 51.5 53.2 8.8 +13.0 157.1 13 00 39.90 +60 40.1 1.202 0.989 77.6/ 15 52.3 53.4 8.9 +13.8 158.1 14 00 42.83 +61 54.8 1.194 0.998 78.7/ 16 53.2 53.6 8.9 +14.6 159.1 15 00 46.05 +63 10.3 1.185 1.008 79.8/ 17 54.1 53.7 8.9 +15.4 160.1 16 00 49.62 +64 26.5 1.177 1.018 80.9/ 18 55.0 53.8 8.9 +16.3 161.0 17 00 53.59 +65 43.3 1.170 1.029 81.9/ 18 55.9 53.9 9.0 +17.3 161.9 18 00 58.03 +67 00.8 1.163 1.039 83.0/ 19 56.7 53.9 9.0 +18.3 162.8 19 01 03.02 +68 18.8 1.156 1.050 84.1/ 21 57.6 53.9 9.0 +19.3 163.7 20 01 08.69 +69 37.1 1.149 1.060 85.1/ 22 58.5 53.9 9.1 +20.3 164.5 21 01 15.16 +70 55.7 1.143 1.071 86.1/ 23 59.4 53.9 9.1 +21.4 165.3 22 01 22.62 +72 14.2 1.137 1.082 87.1/ 25 60.3 53.8 9.1 +22.6 166.0 23 01 31.31 +73 32.4 1.132 1.093 88.0/ 27 61.2 53.7 9.2 +23.7 166.7 24 01 41.52 +74 50.0 1.127 1.105 88.9/ 29 62.1 53.6 9.2 +24.9 167.4 25 01 53.67 +76 06.3 1.122 1.116 89.8/ 32 63.0 53.4 9.2 +26.1 168.0 26 02 08.27 +77 20.6 1.118 1.128 90.5/ 36 63.8 53.2 9.3 +27.4 168.6 27 02 26.04 +78 32.1 1.115 1.139 91.3/ 40 64.7 53.0 9.3 +28.7 169.1 28 02 47.86 +79 39.2 1.112 1.151 91.9/ 45 65.6 52.8 9.3 +30.0 169.6 29 03 14.77 +80 40.2 1.110 1.163 92.5/ 52 66.4 52.6 9.4 +31.3 170.0 30 03 47.80 +81 32.2 1.108 1.175 93.0/ 60 67.3 52.3 9.4 +32.6 170.4 May 1 04 27.48 +82 12.1 1.106 1.187 93.4/ 70 68.1 52.0 9.5 +34.0 170.7 m1 = 8.5 + 5 log Delta + 10.0 log r Lati.= +35.5
Associate of the CBAT Syuichi Nakano 2020 Mar. 15