121P/Shoemaker-Holt 2 Orbit by S. Nakano NK 4259 (2020) Observed in 2nd half of 2022
Equinox 2000.0 T/TT q (AU) e P Peri. Node Inc. Tail(AU) Epoch 2023 June 28.86686 3.7302994 0.1863194 9.82 11.67784 94.11457 20.16398 0.200 2023 Sep. 13.0 m1 = 4.5 + 5 log Delta + 20.0 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 Dec. 27 04 52.74 +15 31.4 04 55.60 +15 36.1 2.864 3.795 -0.59 + 3.7 18.4 9.3/294 158.4 5.5 66/0.36 108 .18 2023 Jan. 6 04 46.81 +16 08.2 04 49.68 +16 13.3 2.923 3.789 -0.44 + 4.0 18.4 7.5/302 147.4 8.0 73/0.51 24 .99 16 04 42.36 +16 48.1 04 45.24 +16 53.6 3.007 3.782 -0.27 + 4.3 18.4 5.7/318 136.5 10.3 77/0.64 144 .41 26 04 39.70 +17 30.7 04 42.59 +17 36.3 3.113 3.776 -0.07 + 4.5 18.5 4.6/347 126.0 12.2 79/0.73 69 .23 Feb. 5 04 38.98 +18 15.1 04 41.88 +18 20.8 3.235 3.771 +0.12 + 4.6 18.6 4.9/ 21 115.8 13.6 80/0.79 56 .99 15 04 40.20 +19 00.9 04 43.13 +19 06.5 3.369 3.765 +0.31 + 4.6 18.7 6.4/ 44 106.1 14.6 82/0.81 174 .36 25 04 43.30 +19 47.1 04 46.24 +19 52.5 3.511 3.760 +0.49 + 4.6 18.7 8.2/ 56 96.9 15.1 82/0.81 34 .27 Mar. 7 04 48.14 +20 33.2 04 51.10 +20 38.2 3.656 3.756 +0.64 + 4.5 18.8 10.0/ 63 88.1 15.3 83/0.79 86 1.00 17 04 54.53 +21 18.3 04 57.52 +21 22.9 3.800 3.751 +0.78 + 4.3 18.9 11.7/ 68 79.7 15.1 84/0.75 144 .29 27 05 02.33 +22 01.8 05 05.33 +22 05.9 3.941 3.748 +0.90 + 4.1 19.0 13.2/ 72 71.6 14.6 85/0.70 7 .30 Apr. 6 05 11.35 +22 43.0 05 14.37 +22 46.4 4.075 3.744 +1.01 + 3.8 19.0 14.4/ 74 63.9 13.9 86/0.64 114 1.00 16 05 21.43 +23 21.3 05 24.46 +23 24.0 4.201 3.741 +1.10 + 3.4 19.1 15.5/ 77 56.4 12.9 86/0.58 111 .22 26 05 32.42 +23 56.2 05 35.47 +23 58.1 4.317 3.738 +1.18 + 3.0 19.1 16.4/ 79 49.2 11.8 87/0.52 20 .32 May 6 05 44.19 +24 27.2 05 47.26 +24 28.3 4.421 3.736 +1.24 + 2.6 19.2 17.1/ 81 42.2 10.4 88/0.45 141 1.00 16 05 56.60 +24 54.1 05 59.68 +24 54.2 4.512 3.734 +1.30 + 2.2 19.2 17.7/ 82 35.4 9.0 88/0.38 81 .15 26 06 09.55 +25 16.5 06 12.64 +25 15.7 4.589 3.733 +1.34 + 1.7 19.2 18.2/ 84 28.7 7.5 88/0.31 43 .35 June 5 06 22.92 +25 34.4 06 26.01 +25 32.7 4.651 3.731 +1.37 + 1.2 19.3 18.6/ 85 22.2 5.9 87/0.24 169 .99 15 06 36.61 +25 47.8 06 39.70 +25 45.0 4.698 3.731 +1.39 + 0.8 19.3 18.8/ 87 15.8 4.3 85/0.17 53 .10 25 06 50.54 +25 56.5 06 53.62 +25 52.8 4.729 3.730 +1.40 + 0.3 19.3 19.0/ 88 9.6 2.6 77/0.11 66 .37 July 5 07 04.59 +26 01.0 07 07.67 +25 56.2 4.743 3.730 +1.41 - 0.1 19.3 19.0/ 89 4.4 1.2 46/0.05 161 .96 15 07 18.70 +26 01.4 07 21.77 +25 55.7 4.742 3.731 +1.41 - 0.4 19.3 19.0/ 90 5.2 1.4 324/0.06 27 .07 25 07 32.79 +25 58.2 07 35.84 +25 51.5 4.724 3.732 +1.40 - 0.7 19.3 18.9/ 91 10.9 2.9 302/0.12 89 .41 Aug. 4 07 46.75 +25 51.9 07 49.79 +25 44.3 4.691 3.733 +1.38 - 1.0 19.3 18.6/ 92 17.1 4.6 296/0.19 132 .92 14 08 00.53 +25 43.1 08 03.56 +25 34.6 4.642 3.735 +1.35 - 1.1 19.3 18.3/ 93 23.5 6.2 294/0.26 3 .05 24 08 14.04 +25 32.6 08 17.05 +25 23.3 4.578 3.737 +1.31 - 1.2 19.3 17.9/ 93 30.0 7.8 293/0.32 115 .46 Sept. 3 08 27.20 +25 21.3 08 30.18 +25 11.2 4.499 3.739 +1.27 - 1.2 19.2 17.3/ 93 36.7 9.3 292/0.39 103 .88 13 08 39.92 +25 10.2 08 42.88 +24 59.4 4.407 3.742 +1.22 - 1.0 19.2 16.6/ 93 43.5 10.7 292/0.46 21 .04 23 08 52.11 +25 00.4 08 55.05 +24 49.0 4.302 3.745 +1.15 - 0.8 19.1 15.7/ 92 50.5 11.9 292/0.53 143 .52 Oct. 3 09 03.66 +24 53.3 09 06.58 +24 41.2 4.186 3.748 +1.08 - 0.4 19.1 14.7/ 91 57.7 13.0 292/0.59 75 .84 13 09 14.48 +24 50.2 09 17.38 +24 37.6 4.061 3.752 +0.99 + 0.2 19.0 13.5/ 89 65.2 14.0 292/0.65 45 .03 23 09 24.42 +24 52.5 09 27.31 +24 39.4 3.928 3.757 +0.89 + 0.9 19.0 12.2/ 85 72.9 14.7 291/0.70 173 .60 Nov. 2 09 33.35 +25 01.8 09 36.22 +24 48.4 3.789 3.761 +0.78 + 1.7 18.9 10.7/ 80 80.9 15.1 291/0.75 47 .81 12 09 41.12 +25 19.6 09 43.98 +25 05.8 3.648 3.766 +0.64 + 2.7 18.8 9.1/ 72 89.2 15.2 290/0.78 73 .02 22 09 47.53 +25 47.2 09 50.38 +25 33.2 3.508 3.772 +0.49 + 3.8 18.8 7.6/ 60 97.8 15.0 288/0.80 151 .67 Dec. 2 09 52.41 +26 25.6 09 55.26 +26 11.3 3.372 3.778 +0.32 + 4.9 18.7 6.5/ 41 106.9 14.5 286/0.80 20 .79 12 09 55.59 +27 15.1 09 58.44 +27 00.7 3.244 3.784 +0.13 + 6.0 18.6 6.3/ 16 116.2 13.5 284/0.78 105 .01 22 09 56.89 +28 15.3 09 59.76 +28 00.9 3.129 3.790 -0.06 + 6.9 18.6 6.9/353 125.9 12.1 280/0.73 113 .74 2024 Jan. 1 09 56.25 +29 24.2 09 59.13 +29 09.8 3.031 3.797 -0.26 + 7.5 18.5 8.2/336 135.7 10.4 274/0.64 18 .78 11 09 53.66 +30 38.8 09 56.56 +30 24.6 2.954 3.804 -0.43 + 7.6 18.5 9.4/324 145.4 8.4 265/0.53 141 .01 21 09 49.31 +31 54.6 09 52.24 +31 40.5 2.902 3.812 -0.57 + 7.2 18.4 10.2/315 154.2 6.5 250/0.42 74 .79 31 09 43.56 +33 06.1 09 46.52 +32 52.2 2.878 3.820 -0.66 + 6.2 18.4 10.3/308 160.3 5.0 223/0.32 52 .77 Feb. 10 09 36.97 +34 08.2 09 39.96 +33 54.6 2.883 3.828 -0.67 + 4.9 18.5 9.6/301 160.7 4.9 187/0.32 165 .00 20 09 30.22 +34 56.5 09 33.24 +34 43.2 2.917 3.836 -0.62 + 3.2 18.5 8.2/294 155.1 6.2 158/0.40 36 .82 Mar. 1 09 24.03 +35 28.6 09 27.08 +35 15.5 2.978 3.845 -0.50 + 1.6 18.6 6.3/285 146.7 8.1 141/0.51 88 .75 11 09 19.01 +35 44.1 09 22.08 +35 31.3 3.064 3.854 -0.34 0.0 18.7 4.1/270 137.3 10.1 131/0.61 130 .01 21 09 15.63 +35 43.9 09 18.71 +35 31.3 3.171 3.864 -0.15 - 1.4 18.7 2.3/233 127.9 11.7 124/0.69 15 .84 31 09 14.13 +35 30.2 09 17.21 +35 17.6 3.295 3.873 +0.04 - 2.5 18.9 2.6/168 118.6 13.1 119/0.74 123 .72