C/2020 X4 (Leonard) Orbit by S. Nakano NK 4539 (2021) Observed in 2nd half of 2021
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2020 Nov. 16.35981 5.2204340 0.8729919 264 140.30318 161.88408 80.61075 0.200 2022 Aug. 9.0 m1 = 10.0 + 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2022 Jan. 1 22 26.93 -12 24.4 22 29.59 -12 09.0 6.464 5.946 +0.54 - 1.5 20.2 8.1/101 54.4 7.7 73/0.23 79 .05 11 22 32.38 -12 39.5 22 35.03 -12 24.0 6.628 5.979 +0.59 - 1.0 20.3 8.7/ 97 45.4 6.7 74/0.19 59 .62 21 22 38.30 -12 50.1 22 40.95 -12 34.4 6.774 6.012 +0.63 - 0.7 20.4 9.2/ 94 36.6 5.6 76/0.16 178 .91 31 22 44.59 -12 57.1 22 47.23 -12 41.3 6.898 6.046 +0.65 - 0.4 20.4 9.6/ 93 28.0 4.4 79/0.12 45 .02 Feb. 10 22 51.14 -13 01.7 22 53.78 -12 45.7 7.001 6.081 +0.67 - 0.3 20.5 9.8/ 92 19.6 3.1 86/0.09 87 .63 20 22 57.86 -13 04.9 23 00.49 -12 48.7 7.079 6.115 +0.68 - 0.3 20.5 9.9/ 92 11.9 1.9 102/0.05 150 .88 Mar. 2 23 04.66 -13 07.7 23 07.29 -12 51.5 7.133 6.151 +0.68 - 0.3 20.6 9.9/ 92 6.9 1.1 146/0.03 11 .01 12 23 11.46 -13 11.2 23 14.08 -12 54.8 7.163 6.186 +0.67 - 0.5 20.6 9.8/ 93 9.9 1.6 198/0.05 114 .64 22 23 18.18 -13 16.3 23 20.79 -12 59.9 7.168 6.223 +0.65 - 0.8 20.6 9.6/ 95 17.1 2.7 218/0.08 117 .84 Apr. 1 23 24.73 -13 24.1 23 27.33 -13 07.5 7.149 6.259 +0.63 - 1.1 20.6 9.3/ 97 25.1 3.9 226/0.11 21 .00 11 23 31.04 -13 35.4 23 33.64 -13 18.8 7.109 6.296 +0.60 - 1.6 20.7 8.9/100 33.4 5.0 231/0.14 141 .66 21 23 37.03 -13 51.1 23 39.62 -13 34.5 7.048 6.334 +0.56 - 2.1 20.7 8.4/105 41.8 6.1 234/0.17 82 .77 May 1 23 42.62 -14 12.3 23 45.21 -13 55.6 6.968 6.372 +0.51 - 2.7 20.6 7.9/110 50.2 7.0 236/0.19 52 .00 11 23 47.74 -14 39.7 23 50.31 -14 23.0 6.874 6.410 +0.45 - 3.4 20.6 7.4/118 58.8 7.7 238/0.22 168 .69 21 23 52.29 -15 14.0 23 54.86 -14 57.3 6.767 6.448 +0.39 - 4.2 20.6 7.0/127 67.5 8.3 240/0.24 46 .70 31 23 56.20 -15 56.0 23 58.76 -15 39.3 6.652 6.487 +0.32 - 5.0 20.6 6.8/138 76.3 8.7 242/0.25 82 .00 June 10 23 59.37 -16 46.1 00 01.93 -16 29.3 6.531 6.527 +0.24 - 5.8 20.6 6.8/150 85.3 8.9 244/0.26 153 .74 20 00 01.74 -17 44.5 00 04.29 -17 27.8 6.410 6.566 +0.15 - 6.7 20.6 7.0/163 94.3 8.9 247/0.27 15 .62 30 00 03.22 -18 51.1 00 05.77 -18 34.4 6.294 6.606 +0.05 - 7.4 20.6 7.5/174 103.5 8.6 250/0.26 114 .01 July 10 00 03.75 -20 05.5 00 06.30 -19 48.8 6.186 6.646 -0.05 - 8.1 20.5 8.1/185 112.8 8.1 253/0.25 117 .80 20 00 03.29 -21 26.6 00 05.84 -21 09.9 6.091 6.687 -0.15 - 8.6 20.5 8.9/193 122.1 7.4 258/0.23 32 .56 30 00 01.83 -22 52.8 00 04.39 -22 36.1 6.015 6.728 -0.24 - 8.9 20.5 9.5/200 131.2 6.5 265/0.21 146 .02 Aug. 9 23 59.41 -24 22.0 00 01.97 -24 05.3 5.962 6.769 -0.33 - 8.9 20.5 10.0/206 139.9 5.5 274/0.18 77 .86 19 23 56.10 -25 51.5 23 58.67 -25 34.8 5.934 6.811 -0.40 - 8.7 20.5 10.2/212 147.6 4.6 287/0.15 67 .52 29 23 52.06 -27 18.4 23 54.64 -27 01.7 5.935 6.852 -0.46 - 8.1 20.6 10.2/216 153.2 3.8 307/0.12 159 .03 Sept. 8 23 47.48 -28 39.9 23 50.08 -28 23.2 5.967 6.894 -0.48 - 7.3 20.6 9.7/221 155.1 3.5 332/0.11 38 .92 18 23 42.62 -29 53.3 23 45.23 -29 36.7 6.030 6.937 -0.49 - 6.3 20.6 8.9/225 152.4 3.8 358/0.12 102 .49 28 23 37.74 -30 56.7 23 40.37 -30 40.1 6.122 6.979 -0.46 - 5.2 20.7 7.9/228 146.4 4.6 17/0.14 128 .05 Oct. 8 23 33.14 -31 48.7 23 35.78 -31 32.1 6.242 7.022 -0.41 - 4.0 20.7 6.6/232 138.5 5.4 30/0.17 24 .96 18 23 29.07 -32 28.8 23 31.72 -32 12.3 6.386 7.065 -0.33 - 2.9 20.8 5.1/235 129.7 6.2 39/0.19 134 .47 28 23 25.73 -32 57.5 23 28.40 -32 40.9 6.551 7.108 -0.24 - 1.8 20.9 3.5/239 120.6 6.9 47/0.20 90 .08 Nov. 7 23 23.31 -33 15.4 23 25.98 -32 58.8 6.731 7.152 -0.14 - 0.8 21.0 2.0/245 111.3 7.4 53/0.21 53 .98 17 23 21.88 -33 23.8 23 24.56 -33 07.3 6.922 7.195 -0.04 0.0 21.1 0.5/266 102.1 7.7 58/0.22 157 .46 27 23 21.48 -33 24.1 23 24.16 -33 07.6 7.119 7.239 +0.06 + 0.6 21.1 1.0/ 51 93.1 7.8 62/0.21 54 .13 Dec. 7 23 22.11 -33 17.8 23 24.79 -33 01.3 7.317 7.283 +0.16 + 1.1 21.2 2.3/ 61 84.2 7.7 67/0.20 85 .99 17 23 23.71 -33 06.4 23 26.39 -32 49.9 7.511 7.327 +0.25 + 1.5 21.3 3.5/ 64 75.5 7.5 71/0.19 148 .44 27 23 26.22 -32 51.2 23 28.88 -32 34.7 7.698 7.372 +0.33 + 1.8 21.4 4.5/ 67 67.1 7.1 76/0.18 26 .18 2023 Jan. 6 23 29.54 -32 33.5 23 32.19 -32 17.0 7.874 7.416 +0.40 + 1.9 21.4 5.4/ 70 59.1 6.5 82/0.16 114 .99 16 23 33.56 -32 14.5 23 36.20 -31 57.9 8.035 7.461 +0.46 + 1.9 21.5 6.2/ 72 51.4 5.9 88/0.14 121 .41 26 23 38.20 -31 55.2 23 40.82 -31 38.6 8.178 7.506 +0.51 + 1.9 21.6 6.8/ 74 44.4 5.3 95/0.13 31 .23 Feb. 5 23 43.34 -31 36.7 23 45.95 -31 20.0 8.303 7.551 +0.55 + 1.7 21.6 7.3/ 77 38.1 4.6 105/0.11 139 .99 15 23 48.88 -31 19.6 23 51.48 -31 03.0 8.406 7.596 +0.58 + 1.5 21.7 7.7/ 79 32.9 4.1 117/0.09 91 .36 25 23 54.74 -31 05.0 23 57.32 -30 48.3 8.488 7.642 +0.61 + 1.1 21.7 7.9/ 82 29.5 3.7 133/0.08 57 .27 Mar. 7 00 00.82 -30 53.6 00 03.38 -30 36.9 8.547 7.687 +0.62 + 0.7 21.7 8.0/ 85 28.2 3.5 150/0.08 155 1.00 17 00 07.03 -30 46.2 00 09.57 -30 29.5 8.584 7.733 +0.62 + 0.3 21.8 8.1/ 88 29.4 3.6 168/0.08 60 .29 27 00 13.30 -30 43.3 00 15.82 -30 26.7 8.599 7.779 +0.62 - 0.2 21.8 8.0/ 92 32.7 4.0 183/0.09 84 .30 Apr. 6 00 19.54 -30 45.8 00 22.04 -30 29.1 8.593 7.825 +0.61 - 0.8 21.8 7.9/ 96 37.6 4.5 195/0.10 145 1.00 16 00 25.67 -30 54.1 00 28.15 -30 37.5 8.568 7.871 +0.59 - 1.5 21.8 7.8/101 43.5 5.0 204/0.12 34 .22 26 00 31.62 -31 08.8 00 34.08 -30 52.3 8.526 7.917 +0.57 - 2.2 21.8 7.6/107 50.0 5.6 212/0.13 110 .32 May 6 00 37.30 -31 30.5 00 39.75 -31 14.0 8.469 7.963 +0.53 - 2.9 21.8 7.4/113 56.9 6.1 218/0.14 120 1.00 16 00 42.64 -31 59.4 00 45.07 -31 43.0 8.400 8.009 +0.49 - 3.6 21.9 7.2/121 64.1 6.5 223/0.15 33 .15