C/2023 X2 (Leonard) Orbit by S. Nakano NK 5516 (2026) Observed in 2nd half of 2025
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Dec. 28.52760 5.0886719 1.0001308 64.80765 66.30299 76.98090 0.200 2026 June 9.0 m1 = 8.5 + 5 log Delta + 7.5 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2025 Dec. 31 18 37.93 +83 51.5 18 30.22 +83 54.0 4.713 5.089 +4.43 - 5.8 17.2 9.5/122 107.0 10.6 358/0.43 71 .84 2026 Jan. 10 19 20.38 +82 50.6 19 14.52 +82 56.2 4.746 5.089 +3.34 - 4.8 17.2 8.0/122 105.0 10.8 358/0.43 98 .56 20 19 52.49 +82 00.9 19 47.95 +82 08.6 4.788 5.091 +2.68 - 3.3 17.2 6.6/117 102.4 10.9 355/0.43 102 .01 30 20 18.32 +81 25.9 20 14.71 +81 35.3 4.839 5.095 +2.23 - 1.8 17.2 5.3/107 99.5 11.0 352/0.43 69 .89 Feb. 9 20 39.99 +81 07.1 20 37.00 +81 17.7 4.894 5.099 +1.90 - 0.1 17.3 4.3/ 89 96.4 11.1 347/0.43 110 .55 19 20 58.61 +81 05.1 20 56.03 +81 16.8 4.953 5.104 +1.63 + 1.6 17.3 4.0/ 65 93.2 11.1 342/0.43 87 .03 Mar. 1 21 14.64 +81 20.0 21 12.29 +81 32.5 5.013 5.111 +1.36 + 3.2 17.3 4.3/ 41 90.0 11.2 337/0.43 78 .93 11 21 28.18 +81 51.1 21 25.86 +82 04.2 5.073 5.119 +1.05 + 4.7 17.3 5.1/ 22 87.0 11.2 331/0.42 115 .54 21 21 38.88 +82 37.7 21 36.35 +82 51.3 5.131 5.127 +0.60 + 6.1 17.4 6.2/ 9 84.2 11.1 324/0.42 73 .05 31 21 45.53 +83 38.6 21 42.40 +83 52.5 5.186 5.137 -0.17 + 7.3 17.4 7.3/358 81.6 11.1 316/0.41 90 .95 Apr. 10 21 45.29 +84 52.1 21 40.71 +85 05.9 5.238 5.148 -1.92 + 8.2 17.4 8.5/348 79.3 11.0 306/0.40 112 .52 20 21 29.91 +86 15.3 21 21.54 +86 28.4 5.287 5.160 -7.29 + 8.0 17.5 9.6/335 77.3 10.9 292/0.40 65 .09 30 20 29.17 +87 39.1 20 08.62 +87 48.7 5.331 5.173 -20.86 + 2.6 17.5 10.7/309 75.6 10.9 265/0.39 102 .97 May 10 17 13.34 +88 19.6 16 40.01 +88 15.0 5.372 5.188 -14.79 - 7.7 17.5 11.6/250 74.1 10.8 203/0.39 105 .49 20 14 21.86 +87 12.2 14 12.10 +86 58.4 5.409 5.203 -4.28 -11.8 17.5 12.5/206 72.9 10.7 157/0.38 64 .15 30 13 31.77 +85 16.2 13 29.29 +85 00.8 5.444 5.219 -1.16 -13.2 17.6 13.3/189 71.9 10.6 137/0.38 109 .98 June 9 13 18.15 +83 04.3 13 17.71 +82 48.6 5.476 5.237 -0.05 -14.1 17.6 14.1/180 71.1 10.6 125/0.37 97 .44 19 13 16.90 +80 43.6 13 17.24 +80 27.8 5.507 5.255 +0.46 -14.7 17.6 14.7/174 70.5 10.5 116/0.37 69 .20 29 13 21.07 +78 16.9 13 21.79 +78 01.3 5.537 5.274 +0.72 -15.0 17.6 15.2/170 69.9 10.4 108/0.36 112 .99 July 9 13 28.02 +75 46.3 13 28.94 +75 30.9 5.566 5.295 +0.87 -15.3 17.7 15.7/166 69.4 10.4 100/0.36 88 .37 19 13 36.56 +73 13.3 13 37.61 +72 58.1 5.595 5.316 +0.96 -15.4 17.7 16.0/162 69.0 10.3 93/0.35 76 .26 29 13 46.09 +70 39.5 13 47.24 +70 24.5 5.626 5.338 +1.02 -15.3 17.7 16.2/159 68.5 10.2 86/0.35 113 1.00 Aug. 8 13 56.25 +68 06.3 13 57.47 +67 51.7 5.657 5.362 +1.07 -15.1 17.7 16.3/156 68.1 10.1 79/0.34 81 .29 18 14 06.85 +65 35.2 14 08.12 +65 21.1 5.689 5.386 +1.09 -14.7 17.8 16.3/153 67.7 10.0 73/0.34 82 .30 28 14 17.74 +63 07.8 14 19.06 +62 54.1 5.721 5.411 +1.11 -14.2 17.8 16.2/150 67.2 9.9 66/0.33 112 1.00 Sept. 7 14 28.81 +60 45.3 14 30.17 +60 32.0 5.755 5.437 +1.12 -13.6 17.8 16.0/146 66.8 9.8 59/0.33 75 .21 17 14 40.01 +58 29.1 14 41.40 +58 16.3 5.789 5.464 +1.13 -12.8 17.8 15.7/143 66.3 9.7 52/0.32 86 .33 27 14 51.25 +56 20.5 14 52.68 +56 08.3 5.822 5.491 +1.13 -11.9 17.9 15.3/140 66.0 9.6 45/0.32 111 1.00 Oct. 7 15 02.48 +54 20.6 15 03.94 +54 09.0 5.855 5.520 +1.12 -10.9 17.9 14.9/136 65.7 9.5 37/0.31 72 .15 17 15 13.65 +52 30.6 15 15.13 +52 19.6 5.885 5.549 +1.11 - 9.9 17.9 14.3/133 65.7 9.4 30/0.31 90 .34 27 15 24.69 +50 51.4 15 26.19 +50 40.9 5.913 5.579 +1.09 - 8.7 18.0 13.6/129 65.8 9.3 22/0.30 108 .99 Nov. 6 15 35.53 +49 23.7 15 37.04 +49 13.9 5.938 5.610 +1.06 - 7.5 18.0 12.9/124 66.1 9.3 14/0.30 70 .11 16 15 46.11 +48 08.2 15 47.63 +47 59.0 5.958 5.642 +1.02 - 6.2 18.0 12.1/120 66.8 9.3 6/0.30 94 .36 26 15 56.33 +47 05.5 15 57.87 +46 57.0 5.973 5.674 +0.98 - 4.9 18.0 11.2/115 67.8 9.3 358/0.30 103 .97 Dec. 6 16 06.12 +46 15.8 16 07.66 +46 07.8 5.983 5.707 +0.93 - 3.6 18.1 10.3/110 69.2 9.3 350/0.30 70 .09 16 16 15.37 +45 39.2 16 16.91 +45 31.9 5.987 5.741 +0.86 - 2.3 18.1 9.3/103 70.9 9.3 342/0.30 99 .38 26 16 23.97 +45 15.8 16 25.51 +45 09.0 5.985 5.776 +0.78 - 1.0 18.1 8.4/ 96 73.1 9.4 333/0.30 95 .94 2027 Jan. 5 16 31.80 +45 05.0 16 33.33 +44 58.8 5.978 5.811 +0.69 + 0.2 18.1 7.3/ 88 75.6 9.4 325/0.31 72 .07 15 16 38.73 +45 06.4 16 40.25 +45 00.7 5.965 5.847 +0.59 + 1.3 18.1 6.3/ 78 78.4 9.5 317/0.31 104 .41 25 16 44.61 +45 19.1 16 46.11 +45 13.7 5.947 5.884 +0.47 + 2.3 18.1 5.4/ 65 81.6 9.5 308/0.31 86 .91 Feb. 4 16 49.31 +45 41.7 16 50.78 +45 36.7 5.926 5.921 +0.33 + 3.1 18.2 4.7/ 48 84.9 9.5 300/0.31 78 .06 14 16 52.65 +46 12.9 16 54.10 +46 08.1 5.902 5.959 +0.18 + 3.8 18.2 4.2/ 26 88.5 9.5 291/0.31 107 .46 24 16 54.49 +46 50.5 16 55.91 +46 45.8 5.878 5.997 +0.02 + 4.2 18.2 4.2/ 3 92.1 9.5 282/0.31 79 .88 Mar. 6 16 54.70 +47 32.1 16 56.09 +47 27.5 5.855 6.036 -0.16 + 4.3 18.2 4.6/340 95.7 9.4 273/0.31 86 .05