280P/Larsen Orbit by S. Nakano NK 5165 (2024) Last obs. 2023 04 28 (M45)

Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2023 Aug. 4.57239 2.6400518 0.4169184 9.63 104.70376 131.37712 11.77318 0.200 2024 Mar. 31.0 m1 = 13.5 + 5 log Delta + 10.0 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 18 06.72 -18 00.1 18 09.64 -17 59.5 3.779 2.803 +1.86 - 0.8 20.9 26.5/ 92 6.1 2.1 26/0.11 116 .74 2024 Jan. 1 18 25.27 -18 09.5 18 28.19 -18 07.6 3.802 2.826 +1.83 + 0.1 20.9 26.1/ 91 5.9 2.1 327/0.10 120 .78 11 18 43.58 -18 10.0 18 46.50 -18 06.7 3.813 2.849 +1.79 + 0.9 21.0 25.6/ 89 10.1 3.5 294/0.17 10 .01 21 19 01.54 -18 02.2 19 04.45 -17 57.6 3.811 2.875 +1.75 + 1.6 21.0 25.0/ 87 15.4 5.2 281/0.26 139 .79 31 19 19.03 -17 47.0 19 21.93 -17 41.2 3.797 2.901 +1.69 + 2.3 21.0 24.3/ 85 21.2 7.0 273/0.35 102 .77 Feb. 10 19 35.99 -17 25.3 19 38.87 -17 18.4 3.772 2.928 +1.63 + 2.8 21.0 23.5/ 84 27.1 8.8 269/0.44 29 .00 20 19 52.30 -16 58.2 19 55.16 -16 50.3 3.733 2.956 +1.56 + 3.2 21.1 22.6/ 82 33.2 10.5 265/0.53 161 .82 Mar. 1 20 07.89 -16 27.1 20 10.73 -16 18.2 3.683 2.985 +1.48 + 3.5 21.1 21.6/ 81 39.4 12.2 262/0.62 81 .75 11 20 22.67 -15 53.2 20 25.49 -15 43.4 3.622 3.015 +1.39 + 3.6 21.1 20.4/ 80 45.8 13.7 260/0.71 55 .01 21 20 36.55 -15 18.0 20 39.34 -15 07.3 3.550 3.046 +1.29 + 3.6 21.1 19.0/ 80 52.3 15.0 258/0.79 170 .84 31 20 49.44 -14 42.8 20 52.21 -14 31.5 3.469 3.077 +1.18 + 3.4 21.1 17.5/ 79 59.0 16.2 256/0.87 57 .72 Apr. 10 21 01.25 -14 09.3 21 04.01 -13 57.3 3.379 3.109 +1.06 + 3.1 21.1 15.8/ 79 66.0 17.1 255/0.94 83 .02 20 21 11.87 -13 39.0 21 14.61 -13 26.5 3.282 3.142 +0.93 + 2.6 21.1 13.8/ 79 73.1 17.8 253/1.01 150 .86 30 21 21.19 -13 13.5 21 23.91 -13 00.6 3.180 3.175 +0.79 + 1.9 21.0 11.7/ 81 80.6 18.2 252/1.06 29 .66 May 10 21 29.08 -12 54.6 21 31.79 -12 41.3 3.075 3.209 +0.63 + 1.1 21.0 9.3/ 83 88.3 18.3 252/1.10 113 .05 20 21 35.40 -12 43.7 21 38.11 -12 30.1 2.969 3.243 +0.46 + 0.2 21.0 6.8/ 89 96.5 18.1 251/1.12 124 .88 30 21 40.02 -12 42.4 21 42.73 -12 28.6 2.866 3.278 +0.28 - 0.9 20.9 4.2/103 105.0 17.4 251/1.12 7 .58 June 9 21 42.83 -12 51.8 21 45.53 -12 37.9 2.768 3.313 +0.09 - 2.1 20.9 2.5/148 114.0 16.3 250/1.08 144 .07 19 21 43.73 -13 12.7 21 46.44 -12 58.8 2.679 3.348 -0.10 - 3.2 20.9 3.6/204 123.4 14.7 250/1.01 94 .90 29 21 42.71 -13 45.2 21 45.43 -13 31.3 2.604 3.384 -0.28 - 4.3 20.9 6.0/224 133.4 12.6 251/0.89 45 .49 July 9 21 39.86 -14 28.2 21 42.58 -14 14.5 2.546 3.420 -0.44 - 5.2 20.9 8.3/231 143.8 10.1 251/0.73 177 .09 19 21 35.40 -15 19.8 21 38.14 -15 06.2 2.510 3.456 -0.56 - 5.7 20.9 10.0/235 154.6 7.2 253/0.53 57 .92 29 21 29.74 -16 16.5 21 32.49 -16 03.2 2.500 3.493 -0.63 - 5.8 20.9 10.8/237 165.7 4.1 257/0.30 87 .40 Aug. 8 21 23.38 -17 14.6 21 26.16 -17 01.6 2.516 3.529 -0.64 - 5.6 21.0 10.7/238 176.6 1.0 285/0.07 144 .11 18 21 16.96 -18 10.0 21 19.76 -17 57.3 2.562 3.566 -0.58 - 4.9 21.1 9.7/239 171.3 2.5 58/0.18 16 .95 28 21 11.11 -18 59.2 21 13.93 -18 46.7 2.636 3.603 -0.47 - 4.1 21.2 7.9/239 160.2 5.5 65/0.39 130 .33 Sept. 7 21 06.36 -19 39.7 21 09.19 -19 27.5 2.737 3.640 -0.32 - 3.1 21.3 5.5/236 149.3 8.1 68/0.55 107 .13 17 21 03.10 -20 10.2 21 05.95 -19 58.1 2.861 3.677 -0.15 - 2.0 21.4 3.0/227 138.7 10.4 70/0.68 26 .98 27 21 01.56 -20 30.3 21 04.42 -20 18.4 3.006 3.714 +0.03 - 1.0 21.6 1.1/161 128.5 12.2 71/0.76 168 .28 Oct. 7 21 01.81 -20 40.5 21 04.67 -20 28.5 3.167 3.751 +0.20 - 0.1 21.7 2.8/ 91 118.7 13.5 71/0.80 73 .15 17 21 03.81 -20 41.2 21 06.66 -20 29.2 3.341 3.788 +0.36 + 0.8 21.9 5.1/ 81 109.3 14.4 72/0.81 64 1.00 27 21 07.43 -20 33.5 21 10.27 -20 21.2 3.522 3.825 +0.51 + 1.6 22.1 7.3/ 78 100.2 14.8 72/0.79 160 .25 Nov. 6 21 12.49 -20 18.0 21 15.32 -20 05.5 3.709 3.862 +0.63 + 2.3 22.2 9.2/ 76 91.4 14.9 72/0.76 41 .18 16 21 18.81 -19 55.5 21 21.63 -19 42.7 3.896 3.899 +0.74 + 2.9 22.4 10.8/ 75 82.9 14.6 73/0.71 99 1.00 26 21 26.20 -19 26.8 21 29.01 -19 13.7 4.081 3.936 +0.83 + 3.5 22.5 12.2/ 74 74.6 14.0 73/0.65 132 .24 Dec. 6 21 34.48 -18 52.6 21 37.27 -18 39.0 4.260 3.973 +0.90 + 4.0 22.6 13.4/ 73 66.6 13.2 73/0.59 10 .23 16 21 43.48 -18 13.4 21 46.25 -17 59.5 4.432 4.009 +0.95 + 4.4 22.8 14.3/ 73 58.7 12.1 73/0.52 130 .99 26 21 53.05 -17 29.9 21 55.79 -17 15.6 4.593 4.046 +1.00 + 4.7 22.9 15.1/ 72 50.9 10.9 74/0.45 107 .23 2025 Jan. 5 22 03.05 -16 42.8 22 05.77 -16 28.2 4.742 4.082 +1.03 + 5.0 23.0 15.7/ 72 43.3 9.5 74/0.39 21 .28 15 22 13.36 -15 52.7 22 16.06 -15 37.7 4.876 4.118 +1.05 + 5.3 23.1 16.1/ 71 35.8 8.0 75/0.32 158 .99 25 22 23.88 -15 00.2 22 26.56 -14 45.0 4.994 4.154 +1.06 + 5.4 23.2 16.4/ 71 28.4 6.5 77/0.25 83 .22 Feb. 4 22 34.51 -14 06.1 22 37.17 -13 50.5 5.095 4.190 +1.06 + 5.5 23.3 16.5/ 71 21.1 4.9 80/0.19 52 .35 14 22 45.17 -13 11.1 22 47.81 -12 55.2 5.177 4.226 +1.06 + 5.6 23.3 16.5/ 71 14.1 3.3 87/0.12 175 .98 24 22 55.78 -12 15.7 22 58.40 -11 59.6 5.240 4.262 +1.05 + 5.5 23.4 16.4/ 71 7.8 1.8 106/0.07 58 .19 Mar. 6 23 06.27 -11 20.7 23 08.88 -11 04.4 5.284 4.297 +1.03 + 5.4 23.4 16.1/ 71 5.3 1.2 168/0.04 83 .42 16 23 16.58 -10 26.9 23 19.18 -10 10.4 5.308 4.332 +1.01 + 5.2 23.5 15.8/ 71 10.2 2.3 215/0.08 152 .97 26 23 26.65 -09 34.8 23 29.23 -09 18.3 5.312 4.367 +0.98 + 5.0 23.5 15.3/ 71 16.9 3.8 228/0.13 31 .16

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