509P/Catalina Orbit by S. Nakano CBET 5588 (2025) Observed in 1st half of 2026
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2026 Mar. 19.36497 3.6928996 0.4776393 18.8 180.02623 275.20640 8.59650 0.200 2026 June 9.0 m1 = 10.0 + 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 04 56.42 +25 14.5 04 59.49 +25 19.0 2.800 3.725 -0.41 - 2.9 17.9 6.3/243 157.0 5.9 91/0.38 25 .84 2026 Jan. 10 04 52.30 +24 45.4 04 55.35 +24 50.1 2.862 3.717 -0.25 - 2.7 18.0 4.3/232 145.9 8.5 87/0.54 117 .56 20 04 49.83 +24 18.6 04 52.88 +24 23.5 2.948 3.711 -0.06 - 2.3 18.0 2.4/199 135.2 10.8 85/0.67 122 .01 30 04 49.27 +23 55.5 04 52.31 +24 00.5 3.053 3.705 +0.14 - 1.9 18.1 2.7/135 124.8 12.6 84/0.76 16 .89 Feb. 9 04 50.67 +23 36.8 04 53.70 +23 41.6 3.174 3.701 +0.33 - 1.5 18.2 4.8/108 115.0 14.0 84/0.82 149 .55 19 04 53.97 +23 22.4 04 57.00 +23 27.0 3.307 3.697 +0.51 - 1.1 18.3 7.1/ 99 105.6 14.9 84/0.84 87 .03 Mar. 1 04 59.07 +23 11.8 05 02.09 +23 16.1 3.446 3.695 +0.67 - 0.8 18.4 9.3/ 95 96.7 15.4 84/0.83 52 .93 11 05 05.77 +23 04.1 05 08.80 +23 07.9 3.589 3.693 +0.81 - 0.6 18.4 11.2/ 93 88.2 15.6 85/0.81 174 .54 21 05 13.90 +22 58.3 05 16.92 +23 01.6 3.732 3.693 +0.94 - 0.6 18.5 13.0/ 92 80.1 15.4 86/0.77 55 .05 31 05 23.26 +22 53.2 05 26.29 +22 55.8 3.872 3.694 +1.04 - 0.6 18.6 14.4/ 92 72.3 14.9 87/0.72 83 .95 Apr. 10 05 33.68 +22 47.7 05 36.71 +22 49.5 4.008 3.695 +1.13 - 0.8 18.7 15.7/ 92 64.9 14.2 88/0.67 157 .52 20 05 44.99 +22 40.7 05 48.02 +22 41.7 4.137 3.698 +1.20 - 1.0 18.8 16.7/ 93 57.7 13.3 89/0.61 24 .09 30 05 57.03 +22 31.4 06 00.05 +22 31.6 4.257 3.702 +1.26 - 1.3 18.8 17.5/ 94 50.7 12.2 91/0.54 110 .97 May 10 06 09.66 +22 19.1 06 12.67 +22 18.3 4.367 3.707 +1.31 - 1.7 18.9 18.3/ 95 43.9 10.9 92/0.47 133 .49 20 06 22.74 +22 03.0 06 25.75 +22 01.3 4.466 3.712 +1.34 - 2.1 18.9 18.8/ 96 37.3 9.5 94/0.41 9 .15 30 06 36.17 +21 42.8 06 39.17 +21 40.1 4.553 3.719 +1.36 - 2.6 19.0 19.2/ 97 30.9 8.0 96/0.34 134 .98 June 9 06 49.83 +21 18.1 06 52.81 +21 14.4 4.627 3.727 +1.38 - 3.0 19.0 19.5/ 98 24.5 6.5 99/0.27 107 .44 19 07 03.62 +20 48.8 07 06.59 +20 44.1 4.687 3.736 +1.38 - 3.5 19.1 19.7/100 18.2 4.9 102/0.20 36 .20 29 07 17.45 +20 14.7 07 20.39 +20 09.0 4.734 3.746 +1.38 - 4.0 19.1 19.8/101 12.1 3.3 107/0.13 156 .99 July 9 07 31.22 +19 35.9 07 34.15 +19 29.3 4.766 3.757 +1.36 - 4.4 19.1 19.8/102 6.1 1.6 120/0.07 81 .37 19 07 44.88 +18 52.6 07 47.78 +18 45.1 4.783 3.768 +1.34 - 4.8 19.2 19.7/104 2.4 0.6 205/0.03 61 .26 29 07 58.33 +18 05.0 08 01.20 +17 56.7 4.786 3.781 +1.31 - 5.2 19.2 19.5/105 7.3 2.0 261/0.08 175 1.00 Aug. 8 08 11.50 +17 13.6 08 14.35 +17 04.4 4.774 3.795 +1.28 - 5.6 19.2 19.2/106 13.4 3.6 271/0.14 52 .29 18 08 24.33 +16 18.6 08 27.15 +16 08.7 4.746 3.809 +1.24 - 5.9 19.2 18.8/108 19.8 5.2 276/0.21 85 .30 28 08 36.74 +15 20.7 08 39.53 +15 10.1 4.704 3.824 +1.19 - 6.1 19.2 18.3/109 26.2 6.7 278/0.27 156 1.00 Sept. 7 08 48.66 +14 20.4 08 51.43 +14 09.1 4.648 3.841 +1.13 - 6.3 19.2 17.7/110 32.8 8.2 280/0.34 23 .21 17 09 00.01 +13 18.3 09 02.76 +13 06.4 4.579 3.858 +1.07 - 6.4 19.2 16.9/112 39.6 9.6 282/0.40 109 .33 27 09 10.71 +12 15.3 09 13.44 +12 02.9 4.496 3.876 +0.99 - 6.4 19.1 15.9/113 46.6 10.8 284/0.46 130 1.00 Oct. 7 09 20.68 +11 12.0 09 23.38 +10 59.1 4.402 3.895 +0.91 - 6.3 19.1 14.8/115 53.7 11.9 285/0.52 9 .15 17 09 29.80 +10 09.4 09 32.48 +09 56.1 4.296 3.914 +0.82 - 6.1 19.1 13.5/117 61.2 12.9 286/0.57 132 .34 27 09 37.97 +09 08.6 09 40.63 +08 54.9 4.183 3.935 +0.71 - 5.9 19.1 12.0/119 68.8 13.6 287/0.62 100 .99 Nov. 6 09 45.07 +08 10.3 09 47.72 +07 56.4 4.062 3.956 +0.59 - 5.5 19.0 10.3/122 76.8 14.1 288/0.66 38 .11 16 09 50.98 +07 15.9 09 53.61 +07 01.8 3.937 3.977 +0.46 - 5.0 19.0 8.4/126 85.2 14.3 289/0.69 158 .36 26 09 55.55 +06 26.6 09 58.18 +06 12.2 3.810 4.000 +0.31 - 4.3 18.9 6.4/133 93.9 14.3 290/0.71 67 .97 Dec. 6 09 58.69 +05 43.4 10 01.30 +05 28.9 3.686 4.023 +0.16 - 3.6 18.9 4.3/147 103.0 13.8 291/0.71 69 .09 16 10 00.27 +05 07.6 10 02.88 +04 53.1 3.568 4.047 0.00 - 2.7 18.8 2.7/180 112.5 13.0 293/0.69 170 .38 26 10 00.26 +04 40.3 10 02.87 +04 25.7 3.460 4.072 -0.16 - 1.8 18.8 3.0/233 122.4 11.8 294/0.64 31 .94 2027 Jan. 5 09 58.68 +04 22.2 10 01.28 +04 07.7 3.366 4.097 -0.30 - 0.8 18.8 4.6/260 132.6 10.2 296/0.57 101 .07 15 09 55.64 +04 13.8 09 58.24 +03 59.4 3.293 4.123 -0.42 + 0.1 18.7 6.4/271 143.2 8.2 299/0.47 137 .41 25 09 51.39 +04 14.7 09 53.99 +04 00.5 3.242 4.149 -0.51 + 1.0 18.7 7.7/277 153.9 6.0 305/0.34 12 .91 Feb. 4 09 46.28 +04 24.1 09 48.89 +04 10.1 3.219 4.176 -0.55 + 1.6 18.7 8.4/281 164.1 3.7 318/0.21 136 .06 14 09 40.78 +04 40.3 09 43.39 +04 26.5 3.225 4.203 -0.54 + 2.1 18.8 8.3/285 171.1 2.1 6/0.10 97 .46 24 09 35.39 +05 00.9 09 38.01 +04 47.3 3.261 4.231 -0.48 + 2.3 18.8 7.5/288 167.0 3.0 73/0.16 49 .88 Mar. 6 09 30.58 +05 23.5 09 33.20 +05 10.2 3.327 4.260 -0.38 + 2.2 18.9 6.1/291 157.4 5.1 91/0.29 169 .05