C/2021 A9 (PANSTARRS) Orbit by S. Nakano NK 5177 (2024) Observed in 1st half of 2024

Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2023 Dec. 2.18794 7.7602250 1.0011530 211.48914 314.83336 158.01285 0.200 2024 Mar. 31.0 m1 = 7.0 + 5 log Delta + 8.0 log r Date/ 0h TT R.A.(1950) Decl. R.A.(2000) Decl. Delta r Daily motion Magnitude Mot./PA Elong. P PA/Tail Moon Age h m ¡ , h m ¡ , m , m1 , ¡ ¡ ¡ ¡ ¡ ¡ 2023 Dec. 22 07 00.84 +09 19.7 07 03.58 +09 15.3 6.836 7.761 -0.87 - 0.4 18.3 12.9/268 158.8 2.6 314/0.07 79 .74 2024 Jan. 1 06 52.10 +09 14.6 06 54.83 +09 10.8 6.805 7.762 -0.88 - 0.2 18.3 13.1/269 165.8 1.8 348/0.05 54 .78 11 06 43.28 +09 12.4 06 46.01 +09 09.2 6.814 7.764 -0.86 + 0.1 18.3 12.7/271 164.0 2.0 36/0.06 161 .01 21 06 34.69 +09 12.9 06 37.43 +09 10.3 6.861 7.766 -0.80 + 0.3 18.3 11.9/272 155.3 3.0 61/0.09 38 .79 31 06 26.64 +09 15.7 06 29.38 +09 13.7 6.944 7.769 -0.73 + 0.5 18.3 10.8/273 144.7 4.2 72/0.12 90 .77 Feb. 10 06 19.36 +09 20.5 06 22.11 +09 19.0 7.060 7.772 -0.63 + 0.7 18.4 9.4/274 133.5 5.3 79/0.15 131 .00 20 06 13.03 +09 26.7 06 15.78 +09 25.7 7.201 7.776 -0.53 + 0.8 18.4 7.8/276 122.4 6.2 83/0.17 20 .82 Mar. 1 06 07.76 +09 33.9 06 10.51 +09 33.3 7.363 7.780 -0.42 + 0.8 18.5 6.2/277 111.4 6.8 86/0.18 126 .75 11 06 03.57 +09 41.7 06 06.32 +09 41.3 7.539 7.785 -0.31 + 0.8 18.5 4.7/280 100.7 7.2 88/0.19 92 .01 21 06 00.46 +09 49.4 06 03.22 +09 49.3 7.721 7.790 -0.21 + 0.7 18.6 3.2/284 90.3 7.3 90/0.19 47 .84 31 05 58.37 +09 56.7 06 01.12 +09 56.8 7.904 7.795 -0.12 + 0.7 18.6 1.8/291 80.1 7.3 93/0.18 156 .72 Apr. 10 05 57.20 +10 03.2 05 59.96 +10 03.3 8.082 7.801 -0.03 + 0.5 18.7 0.7/317 70.3 6.9 95/0.17 54 .02 20 05 56.86 +10 08.5 05 59.62 +10 08.6 8.250 7.808 +0.04 + 0.4 18.7 0.7/ 56 60.7 6.4 98/0.15 77 .86 30 05 57.23 +10 12.3 05 59.99 +10 12.4 8.403 7.815 +0.10 + 0.2 18.8 1.4/ 82 51.4 5.8 101/0.13 152 .66 May 10 05 58.20 +10 14.2 06 00.96 +10 14.3 8.538 7.823 +0.14 0.0 18.8 2.1/ 90 42.5 5.0 105/0.11 24 .05 20 05 59.65 +10 14.1 06 02.41 +10 14.1 8.651 7.831 +0.18 - 0.2 18.8 2.7/ 95 33.9 4.1 111/0.09 107 .88 30 06 01.46 +10 11.8 06 04.22 +10 11.6 8.740 7.839 +0.21 - 0.5 18.9 3.1/ 99 25.8 3.2 120/0.07 120 .58 June 9 06 03.53 +10 07.1 06 06.29 +10 06.8 8.803 7.848 +0.22 - 0.7 18.9 3.4/103 18.7 2.4 135/0.05 25 .07 19 06 05.75 +09 59.9 06 08.51 +09 59.4 8.839 7.858 +0.23 - 1.0 18.9 3.5/107 14.1 1.8 163/0.04 136 .90 29 06 08.01 +09 50.1 06 10.76 +09 49.5 8.848 7.867 +0.22 - 1.3 18.9 3.5/111 14.4 1.8 200/0.04 84 .49 July 9 06 10.20 +09 37.7 06 12.95 +09 36.8 8.830 7.878 +0.20 - 1.5 18.9 3.4/117 19.3 2.4 227/0.05 52 .09 19 06 12.23 +09 22.6 06 14.98 +09 21.6 8.785 7.889 +0.17 - 1.8 18.9 3.1/125 26.5 3.3 241/0.07 159 .92 29 06 13.98 +09 04.8 06 16.72 +09 03.7 8.715 7.900 +0.14 - 2.0 18.9 2.9/135 34.5 4.2 250/0.09 50 .40 Aug. 8 06 15.36 +08 44.4 06 18.09 +08 43.2 8.622 7.912 +0.09 - 2.3 18.9 2.6/150 43.1 5.0 256/0.11 81 .11 18 06 16.25 +08 21.5 06 18.97 +08 20.2 8.507 7.924 +0.03 - 2.5 18.8 2.6/170 52.0 5.8 260/0.13 147 .95 28 06 16.54 +07 56.3 06 19.26 +07 55.0 8.375 7.936 -0.04 - 2.7 18.8 2.8/192 61.1 6.4 263/0.15 23 .33 Sept. 7 06 16.15 +07 28.8 06 18.86 +07 27.6 8.229 7.949 -0.12 - 2.9 18.8 3.4/212 70.5 6.9 266/0.16 111 .13 17 06 14.96 +06 59.6 06 17.65 +06 58.4 8.074 7.963 -0.21 - 3.1 18.7 4.4/225 80.1 7.1 269/0.17 114 .98 27 06 12.88 +06 28.8 06 15.57 +06 27.8 7.914 7.977 -0.30 - 3.2 18.7 5.5/235 90.0 7.2 272/0.18 34 .28 Oct. 7 06 09.86 +05 57.0 06 12.54 +05 56.2 7.755 7.991 -0.40 - 3.2 18.7 6.8/242 100.1 7.1 275/0.18 141 .15 17 06 05.84 +05 24.8 06 08.51 +05 24.3 7.603 8.006 -0.50 - 3.2 18.6 8.1/247 110.4 6.7 278/0.17 76 1.00 27 06 00.82 +04 52.9 06 03.48 +04 52.8 7.465 8.021 -0.60 - 3.0 18.6 9.4/251 120.9 6.1 282/0.16 65 .25 Nov. 6 05 54.85 +04 22.2 05 57.50 +04 22.5 7.347 8.037 -0.68 - 2.8 18.6 10.6/255 131.4 5.3 288/0.14 155 .18 16 05 48.04 +03 53.5 05 50.68 +03 54.3 7.255 8.053 -0.75 - 2.5 18.6 11.5/257 141.6 4.4 296/0.12 39 1.00 26 05 40.55 +03 27.8 05 43.18 +03 29.1 7.193 8.070 -0.80 - 2.1 18.5 12.1/260 150.9 3.4 309/0.09 100 .24 Dec. 6 05 32.60 +03 05.9 05 35.22 +03 07.8 7.166 8.087 -0.81 - 1.7 18.5 12.3/262 157.8 2.6 332/0.07 128 .23 16 05 24.47 +02 48.6 05 27.08 +02 51.1 7.175 8.104 -0.80 - 1.2 18.5 12.1/264 159.5 2.4 6/0.07 28 .99 26 05 16.42 +02 36.2 05 19.04 +02 39.3 7.222 8.122 -0.77 - 0.7 18.6 11.5/267 154.7 3.0 34/0.08 133 .23 2025 Jan. 5 05 08.75 +02 29.0 05 11.36 +02 32.6 7.304 8.140 -0.71 - 0.2 18.6 10.6/269 146.3 3.8 52/0.10 88 .28 15 05 01.69 +02 26.8 05 04.30 +02 30.9 7.419 8.159 -0.63 + 0.3 18.6 9.4/272 136.3 4.8 62/0.13 57 .99 25 04 55.43 +02 29.1 04 58.04 +02 33.7 7.561 8.178 -0.53 + 0.7 18.7 8.0/275 125.9 5.6 69/0.15 155 .22 Feb. 4 04 50.09 +02 35.4 04 52.70 +02 40.3 7.726 8.197 -0.43 + 1.0 18.7 6.6/279 115.3 6.2 73/0.16 49 .35 14 04 45.75 +02 44.8 04 48.36 +02 50.0 7.907 8.217 -0.33 + 1.2 18.8 5.1/283 104.9 6.7 77/0.17 91 .98 24 04 42.41 +02 56.5 04 45.03 +03 02.0 8.098 8.237 -0.24 + 1.3 18.9 3.8/291 94.6 6.9 81/0.17 140 .19 Mar. 6 04 40.04 +03 09.8 04 42.66 +03 15.4 8.292 8.257 -0.15 + 1.4 18.9 2.6/303 84.6 6.9 84/0.16 24 .42 16 04 38.59 +03 23.8 04 41.21 +03 29.5 8.484 8.278 -0.06 + 1.4 19.0 1.7/326 74.8 6.7 87/0.16 122 .97 26 04 37.95 +03 37.8 04 40.58 +03 43.5 8.667 8.300 +0.01 + 1.3 19.0 1.3/ 6 65.3 6.3 91/0.14 109 .16

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