C/2025 K1 (ATLAS) Orbit by S. Nakano NK 5491 (2025) Observed in 1st half of 2026
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2025 Oct. 8.43292 0.3341710 1.0002079 271.01622 97.55901 147.86487 0.200 2026 June 9.0 m1 = 10.5 + 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2025 Dec. 31 00 54.32 +38 11.5 00 57.10 +38 27.7 1.275 1.827 +0.19 -19.1 13.6 19.2/173 107.3 30.9 74/4.06 33 .84 2026 Jan. 10 00 56.25 +35 00.7 00 59.01 +35 16.9 1.600 1.987 +0.47 -10.9 14.5 12.4/152 97.7 29.4 68/3.16 152 .56 20 01 00.96 +33 11.4 01 03.72 +33 27.5 1.925 2.142 +0.63 - 6.1 15.2 9.9/127 88.7 27.3 65/2.50 77 .01 30 01 07.21 +32 11.0 01 09.97 +32 27.0 2.246 2.293 +0.72 - 2.9 15.9 9.6/107 80.1 25.0 61/2.00 62 .89 Feb. 9 01 14.36 +31 42.1 01 17.15 +31 57.9 2.559 2.440 +0.78 - 0.7 16.4 9.9/ 94 71.9 22.6 59/1.61 158 .55 19 01 22.11 +31 34.9 01 24.92 +31 50.5 2.860 2.583 +0.81 + 0.8 16.9 10.4/ 85 63.9 20.1 56/1.29 47 .03 Mar. 1 01 30.23 +31 43.2 01 33.06 +31 58.6 3.145 2.722 +0.83 + 2.0 17.3 10.8/ 79 56.2 17.6 52/1.04 94 .93 11 01 38.55 +32 03.0 01 41.41 +32 18.1 3.413 2.859 +0.84 + 2.8 17.7 11.0/ 75 48.8 15.2 49/0.83 138 .54 21 01 46.96 +32 31.4 01 49.85 +32 46.3 3.662 2.993 +0.84 + 3.5 18.1 11.2/ 71 41.7 12.8 44/0.66 20 .05 31 01 55.36 +33 06.7 01 58.28 +33 21.3 3.889 3.124 +0.83 + 4.0 18.4 11.1/ 68 35.1 10.6 37/0.52 124 .95 Apr. 10 02 03.65 +33 47.3 02 06.60 +34 01.5 4.092 3.253 +0.81 + 4.5 18.7 11.0/ 66 29.1 8.6 28/0.40 114 .52 20 02 11.76 +34 32.1 02 14.74 +34 46.1 4.272 3.380 +0.79 + 4.8 18.9 10.8/ 63 24.1 7.0 15/0.31 25 .09 30 02 19.58 +35 20.5 02 22.60 +35 34.1 4.426 3.505 +0.75 + 5.1 19.2 10.4/ 60 21.0 5.9 357/0.26 150 .97 May 10 02 27.03 +36 11.7 02 30.08 +36 25.0 4.555 3.627 +0.70 + 5.3 19.4 10.0/ 57 20.6 5.6 335/0.24 87 .49 20 02 34.00 +37 05.5 02 37.09 +37 18.5 4.659 3.748 +0.64 + 5.6 19.6 9.4/ 53 23.0 6.0 315/0.25 56 .15 30 02 40.38 +38 01.4 02 43.51 +38 14.1 4.738 3.867 +0.57 + 5.8 19.8 8.8/ 49 27.5 7.0 300/0.28 163 .98 June 9 02 46.05 +38 59.2 02 49.22 +39 11.7 4.792 3.985 +0.49 + 5.9 19.9 8.2/ 43 33.5 8.1 289/0.32 59 .44 19 02 50.87 +39 58.7 02 54.07 +40 10.9 4.824 4.101 +0.38 + 6.1 20.0 7.5/ 35 40.2 9.2 281/0.36 88 .20 29 02 54.65 +40 59.5 02 57.89 +41 11.5 4.835 4.215 +0.26 + 6.2 20.2 6.8/ 25 47.5 10.2 275/0.41 144 .99 July 9 02 57.24 +42 01.1 03 00.51 +42 13.0 4.827 4.328 +0.12 + 6.2 20.3 6.3/ 12 55.2 11.1 270/0.44 30 .37 19 02 58.42 +43 03.1 03 01.72 +43 14.9 4.802 4.440 -0.04 + 6.1 20.4 6.1/356 63.3 11.8 266/0.47 119 .26 29 02 57.96 +44 04.3 03 01.28 +44 16.1 4.765 4.551 -0.23 + 5.9 20.5 6.4/338 71.7 12.2 261/0.49 116 1.00 Aug. 8 02 55.66 +45 03.3 02 59.00 +45 15.3 4.720 4.660 -0.43 + 5.5 20.6 7.2/321 80.4 12.4 256/0.50 26 .29 18 02 51.31 +45 58.3 02 54.66 +46 10.5 4.669 4.768 -0.65 + 4.9 20.6 8.3/306 89.4 12.3 251/0.50 147 .30 28 02 44.76 +46 46.5 02 48.12 +46 59.0 4.620 4.875 -0.88 + 3.9 20.7 9.7/294 98.6 11.8 245/0.49 83 1.00 Sept. 7 02 36.01 +47 24.7 02 39.35 +47 37.6 4.577 4.981 -1.09 + 2.5 20.8 11.2/284 107.9 11.1 238/0.46 60 .21 17 02 25.19 +47 49.4 02 28.49 +48 02.8 4.547 5.086 -1.26 + 0.8 20.9 12.6/275 117.2 10.1 230/0.42 151 .33 27 02 12.66 +47 57.2 02 15.91 +48 11.1 4.533 5.190 -1.37 - 1.1 20.9 13.8/267 126.2 9.0 219/0.38 49 1.00 Oct. 7 01 59.03 +47 45.6 02 02.22 +48 00.0 4.543 5.292 -1.41 - 3.1 21.0 14.5/259 134.5 7.7 206/0.33 100 .15 17 01 45.06 +47 13.7 01 48.16 +47 28.6 4.581 5.394 -1.36 - 5.0 21.1 14.8/251 141.3 6.6 189/0.28 124 .34 27 01 31.55 +46 23.0 01 34.58 +46 38.3 4.648 5.496 -1.24 - 6.6 21.2 14.5/244 145.4 5.9 167/0.24 29 .99 Nov. 6 01 19.24 +45 16.8 01 22.19 +45 32.4 4.748 5.596 -1.07 - 7.7 21.4 13.7/237 145.8 5.7 144/0.23 136 .11 16 01 08.64 +43 59.9 01 11.52 +44 15.9 4.880 5.695 -0.86 - 8.2 21.5 12.4/230 142.4 6.1 122/0.24 89 .36 26 01 00.05 +42 38.0 01 02.89 +42 54.1 5.042 5.794 -0.65 - 8.2 21.6 10.9/222 136.1 6.8 105/0.26 55 .97 Dec. 6 00 53.56 +41 16.2 00 56.36 +41 32.4 5.230 5.892 -0.45 - 7.7 21.8 9.3/214 128.3 7.5 93/0.28 151 .09 16 00 49.09 +39 58.6 00 51.86 +40 14.9 5.441 5.989 -0.26 - 7.0 22.0 7.6/204 119.6 8.2 83/0.29 56 .38 26 00 46.47 +38 48.6 00 49.22 +39 04.9 5.670 6.085 -0.10 - 6.1 22.1 6.2/191 110.5 8.7 76/0.30 92 .94 2027 Jan. 5 00 45.49 +37 48.0 00 48.22 +38 04.3 5.910 6.180 +0.04 - 5.0 22.3 5.0/174 101.4 9.0 70/0.29 130 .07 15 00 45.91 +36 57.9 00 48.64 +37 14.2 6.158 6.275 +0.16 - 3.9 22.4 4.4/154 92.3 9.0 65/0.28 28 .41 25 00 47.51 +36 18.6 00 50.24 +36 34.9 6.407 6.370 +0.26 - 2.9 22.6 4.2/133 83.4 8.8 60/0.27 127 .91 Feb. 4 00 50.07 +35 49.8 00 52.82 +36 06.1 6.653 6.463 +0.34 - 1.9 22.7 4.5/115 74.7 8.5 56/0.25 102 .06 14 00 53.42 +35 31.0 00 56.18 +35 47.2 6.892 6.556 +0.40 - 1.0 22.9 4.9/101 66.2 7.9 51/0.22 31 .46 24 00 57.38 +35 21.4 01 00.15 +35 37.6 7.118 6.648 +0.44 - 0.1 23.0 5.4/ 91 58.1 7.3 46/0.20 154 .88 Mar. 6 01 01.80 +35 20.1 01 04.58 +35 36.2 7.330 6.740 +0.48 + 0.6 23.1 5.8/ 84 50.3 6.5 41/0.17 74 .05