420P/Hill Orbit by S. Nakano NK 4474 (2021) Observed in 2nd half of 2021
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2022 May 22.27413 2.7884210 0.4962760 13.0 157.03031 173.95093 14.50477 0.200 2022 Aug. 9.0 m1 = 12.0 + 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 , ¡ ¡ ¡ ¡ ¡ ¡ 2022 Jan. 1 19 28.59 -12 28.6 19 31.38 -12 22.2 3.904 2.968 +1.73 + 2.5 19.7 25.5/ 85 15.4 5.1 42/0.24 39 .05 11 19 45.92 -12 05.0 19 48.69 -11 57.4 3.903 2.944 +1.74 + 3.3 19.6 25.8/ 83 11.0 3.7 21/0.17 98 .62 21 20 03.38 -11 32.7 20 06.14 -11 24.1 3.891 2.922 +1.75 + 4.1 19.6 26.1/ 81 8.7 2.9 347/0.14 144 .91 31 20 20.90 -10 52.3 20 23.64 -10 42.6 3.868 2.902 +1.75 + 4.9 19.6 26.2/ 80 9.8 3.3 312/0.17 17 .02 Feb. 10 20 38.39 -10 04.4 20 41.10 -09 53.7 3.833 2.883 +1.73 + 5.6 19.5 26.3/ 78 13.5 4.6 290/0.24 116 .63 20 20 55.75 -09 09.7 20 58.44 -08 58.1 3.788 2.866 +1.72 + 6.1 19.5 26.2/ 77 18.3 6.2 278/0.32 123 .88 Mar. 2 21 12.94 -08 09.2 21 15.61 -07 56.7 3.732 2.850 +1.69 + 6.6 19.4 26.0/ 76 23.4 7.9 270/0.41 18 .01 12 21 29.88 -07 03.9 21 32.53 -06 50.6 3.667 2.836 +1.66 + 7.0 19.3 25.7/ 75 28.7 9.7 265/0.51 133 .64 22 21 46.51 -05 54.9 21 49.14 -05 40.9 3.592 2.824 +1.63 + 7.2 19.3 25.3/ 74 34.2 11.4 261/0.61 99 .84 Apr. 1 22 02.79 -04 43.4 22 05.39 -04 28.8 3.509 2.813 +1.58 + 7.3 19.2 24.8/ 73 39.7 13.1 258/0.71 37 .00 11 22 18.64 -03 30.6 22 21.23 -03 15.5 3.419 2.805 +1.54 + 7.3 19.1 24.2/ 72 45.2 14.7 255/0.81 151 .66 21 22 34.02 -02 18.0 22 36.60 -02 02.4 3.321 2.798 +1.48 + 7.2 19.1 23.4/ 72 50.9 16.2 253/0.91 73 .77 May 1 22 48.86 -01 06.8 22 51.43 -00 50.9 3.217 2.793 +1.42 + 6.8 19.0 22.4/ 72 56.6 17.5 252/1.02 58 .00 11 23 03.08 +00 01.4 23 05.64 +00 17.6 3.108 2.790 +1.35 + 6.4 18.9 21.2/ 72 62.5 18.7 250/1.12 168 .69 21 23 16.59 +01 05.1 23 19.15 +01 21.5 2.994 2.789 +1.27 + 5.8 18.8 19.9/ 73 68.6 19.7 249/1.22 46 .70 31 23 29.30 +02 02.8 23 31.86 +02 19.4 2.877 2.789 +1.18 + 5.0 18.7 18.3/ 74 74.8 20.5 248/1.31 80 .00 June 10 23 41.07 +02 52.7 23 43.62 +03 09.4 2.758 2.792 +1.07 + 4.0 18.7 16.5/ 76 81.4 21.1 247/1.40 158 .74 20 23 51.75 +03 33.2 23 54.31 +03 49.9 2.638 2.796 +0.94 + 2.9 18.6 14.4/ 78 88.2 21.3 247/1.47 18 .62 30 00 01.19 +04 02.3 00 03.75 +04 19.0 2.519 2.803 +0.80 + 1.6 18.5 12.1/ 82 95.3 21.2 246/1.53 105 .01 July 10 00 09.18 +04 18.3 00 11.75 +04 34.9 2.403 2.811 +0.64 + 0.1 18.4 9.5/ 89 102.9 20.6 246/1.56 130 .80 20 00 15.55 +04 19.3 00 18.12 +04 35.9 2.292 2.821 +0.45 - 1.6 18.3 7.0/103 111.0 19.7 246/1.55 15 .56 30 00 20.09 +04 03.8 00 22.66 +04 20.4 2.190 2.832 +0.26 - 3.3 18.2 5.1/131 119.6 18.2 246/1.50 133 .02 Aug. 9 00 22.68 +03 30.6 00 25.25 +03 47.3 2.099 2.846 +0.06 - 5.1 18.2 5.1/170 128.8 16.1 246/1.39 94 .86 19 00 23.28 +02 40.0 00 25.85 +02 56.6 2.022 2.861 -0.13 - 6.7 18.1 7.0/197 138.6 13.5 247/1.21 46 .52 29 00 21.96 +01 33.2 00 24.52 +01 49.9 1.965 2.878 -0.30 - 8.0 18.1 9.1/209 149.0 10.4 248/0.96 168 .03 Sept. 8 00 19.00 +00 13.7 00 21.57 +00 30.3 1.930 2.897 -0.41 - 8.7 18.0 10.6/215 159.8 6.9 251/0.65 53 .92 18 00 14.91 -01 13.2 00 17.47 -00 56.6 1.920 2.917 -0.46 - 8.8 18.1 11.2/218 170.8 3.2 263/0.30 82 .49 28 00 10.28 -02 40.8 00 12.84 -02 24.1 1.938 2.938 -0.44 - 8.1 18.1 10.5/219 175.7 1.5 13/0.14 152 .05 Oct. 8 00 05.86 -04 01.9 00 08.42 -03 45.2 1.983 2.961 -0.36 - 6.9 18.2 8.7/218 165.4 4.9 50/0.45 10 .96 18 00 02.29 -05 10.6 00 04.85 -04 53.9 2.055 2.985 -0.22 - 5.2 18.3 6.2/212 154.4 8.3 56/0.73 118 .47 28 00 00.07 -06 02.8 00 02.64 -05 46.1 2.152 3.011 -0.05 - 3.4 18.5 3.5/193 143.7 11.3 59/0.95 111 .08 Nov. 7 23 59.56 -06 36.6 00 02.12 -06 19.9 2.270 3.038 +0.13 - 1.6 18.6 2.5/129 133.4 13.7 61/1.10 29 .98 17 00 00.86 -06 52.1 00 03.42 -06 35.4 2.406 3.066 +0.31 + 0.1 18.8 4.6/ 88 123.6 15.6 62/1.19 151 .46 27 00 03.95 -06 50.7 00 06.51 -06 34.0 2.556 3.096 +0.48 + 1.7 18.9 7.3/ 77 114.3 16.9 63/1.21 72 .13 Dec. 7 00 08.72 -06 34.0 00 11.27 -06 17.3 2.716 3.126 +0.63 + 2.9 19.1 9.8/ 73 105.4 17.7 65/1.20 62 .99 17 00 14.98 -06 04.5 00 17.54 -05 47.9 2.883 3.157 +0.76 + 4.0 19.3 12.0/ 71 97.0 18.0 66/1.16 176 .44 27 00 22.56 -05 24.3 00 25.11 -05 07.7 3.054 3.190 +0.87 + 4.9 19.5 13.9/ 70 88.9 18.0 67/1.09 38 .18 2023 Jan. 6 00 31.25 -04 35.4 00 33.80 -04 18.9 3.226 3.223 +0.96 + 5.5 19.6 15.4/ 69 81.1 17.5 68/1.02 89 .99 16 00 40.88 -03 39.8 00 43.43 -03 23.4 3.397 3.257 +1.04 + 6.0 19.8 16.7/ 69 73.5 16.8 69/0.93 152 .41 26 00 51.29 -02 39.2 00 53.84 -02 23.0 3.563 3.292 +1.11 + 6.4 19.9 17.8/ 69 66.2 15.9 71/0.84 10 .23 Feb. 5 01 02.35 -01 35.2 01 04.90 -01 19.1 3.724 3.328 +1.16 + 6.6 20.1 18.6/ 69 59.2 14.7 72/0.75 113 .99 15 01 13.92 -00 29.1 01 16.48 -00 13.3 3.877 3.364 +1.20 + 6.7 20.2 19.2/ 70 52.3 13.4 74/0.66 124 .36 25 01 25.92 +00 37.8 01 28.49 +00 53.3 4.020 3.401 +1.23 + 6.6 20.3 19.6/ 70 45.5 12.0 76/0.57 19 .27 Mar. 7 01 38.24 +01 44.5 01 40.82 +01 59.6 4.153 3.439 +1.26 + 6.5 20.5 19.9/ 71 38.9 10.4 79/0.49 136 1.00 17 01 50.82 +02 49.8 01 53.41 +03 04.5 4.274 3.477 +1.28 + 6.3 20.6 20.1/ 72 32.5 8.9 82/0.41 96 .29 27 02 03.57 +03 53.0 02 06.18 +04 07.3 4.382 3.515 +1.29 + 6.0 20.7 20.2/ 73 26.3 7.2 87/0.33 43 .30 Apr. 6 02 16.44 +04 53.2 02 19.06 +05 06.9 4.476 3.554 +1.29 + 5.6 20.8 20.1/ 74 20.3 5.6 94/0.26 158 1.00 16 02 29.36 +05 49.7 02 32.00 +06 02.9 4.555 3.594 +1.29 + 5.2 20.8 20.0/ 75 14.8 4.1 104/0.19 67 .22 26 02 42.28 +06 41.9 02 44.93 +06 54.5 4.619 3.634 +1.29 + 4.7 20.9 19.7/ 76 10.4 2.9 123/0.13 65 .32 May 6 02 55.12 +07 29.2 02 57.79 +07 41.2 4.667 3.674 +1.27 + 4.1 21.0 19.4/ 77 8.8 2.4 155/0.11 169 1.00 16 03 07.84 +08 11.3 03 10.52 +08 22.6 4.699 3.714 +1.25 + 3.6 21.1 18.9/ 79 11.4 3.1 191/0.12 39 .15