HALLEY PREDICTIONS
HALLEY
Searching for Sun Angle = 0.4756° over feature at 5.700°E 8.000°S
Moon librations, elongation and percent illumination calculated for a geocentric observer
Sun Angle Sub-Solar Point Librations Phase
Date Time UT Altitude Azimuth Colong Lat. Long. Lat. Elong. %Illum. Age
1/20/2021 12:34:12 0.4756 90.9987 354.632 -1.055 1.795 5.317 86.189 46.813 7.315 *+
2/19/2021 02:48:40 0.4756 91.4469 354.570 -1.499 -1.551 2.619 82.804 43.871 7.321 *+
3/20/2021 16:28:11 0.4756 91.4556 354.569 -1.508 -4.652 -0.698 79.788 41.266 7.255 *+
4/19/2021 05:18:14 0.4756 91.0402 354.626 -1.096 -6.847 -3.875 77.738 39.507 7.116 *+
5/18/2021 17:18:11 0.4756 90.3338 354.725 -0.397 -7.635 -6.134 77.065 38.930 6.929 *+
6/17/2021 04:40:28 0.4756 89.5334 354.836 0.396 -6.829 -6.797 77.904 39.643 6.742 *+
7/16/2021 15:46:01 0.4756 88.8464 354.932 1.076 -4.633 -5.496 80.101 41.524 6.604 *+
8/15/2021 02:58:33 0.4756 88.4486 354.987 1.470 -1.548 -2.439 83.245 44.239 6.547 *+
9/13/2021 14:39:25 0.4756 88.4498 354.987 1.469 1.835 1.474 86.721 47.263 6.575 *+
10/13/2021 03:03:39 0.4756 88.8650 354.929 1.058 4.931 4.912 89.808 49.957 6.665 *+
11/11/2021 16:17:10 0.4756 89.5959 354.827 0.334 7.116 6.709 91.822 51.718 6.793 *+
12/11/2021 06:14:44 0.4756 90.4401 354.710 -0.502 7.817 6.388 92.304 52.141 6.939 *+
1/9/2022 20:39:23 0.4756 91.1444 354.612 -1.199 6.803 4.248 91.168 51.154 7.087 *+
2/8/2022 11:05:16 0.4756 91.4921 354.563 -1.544 4.363 1.062 88.743 49.038 7.222 *+
3/10/2022 01:04:44 0.4756 91.3846 354.578 -1.437 1.154 -2.289 85.639 46.333 7.312 *+
4/8/2022 14:17:34 0.4756 90.8693 354.650 -0.927 -2.088 -5.041 82.521 43.624 7.329 *+
5/8/2022 02:37:13 0.4756 90.1077 354.756 -0.173 -4.771 -6.620 79.923 41.380 7.256 *+
6/6/2022 14:11:34 0.4756 89.3127 354.867 0.614 -6.529 -6.664 78.200 39.900 7.112 *+
7/6/2022 01:18:57 0.4756 88.6900 354.953 1.231 -7.172 -5.068 77.578 39.366 6.935 *+
8/4/2022 12:22:43 0.4756 88.3963 354.994 1.522 -6.598 -2.065 78.212 39.906 6.769 *+
9/2/2022 23:46:09 0.4756 88.5112 354.978 1.408 -4.735 1.669 80.152 41.569 6.645 *+
10/2/2022 11:48:26 0.4756 89.0169 354.908 0.907 -1.673 5.015 83.201 44.203 6.579 *+
11/1/2022 00:40:59 0.4756 89.7897 354.800 0.142 2.058 6.730 86.754 47.293 6.578 *+
11/30/2022 14:24:10 0.4756 90.6168 354.685 -0.677 5.422 6.099 89.889 50.030 6.644 *+
12/30/2022 04:44:57 0.4756 91.2500 354.597 -1.304 7.383 3.417 91.750 51.656 6.769 *+
1/28/2023 19:18:22 0.4756 91.4915 354.564 -1.543 7.542 -0.237 91.960 51.842 6.934 *+
2/27/2023 09:34:25 0.4756 91.2707 354.594 -1.324 6.173 -3.665 90.698 50.742 7.103 *+
3/28/2023 23:08:14 0.4756 90.6662 354.678 -0.726 3.829 -6.010 88.438 48.771 7.240 *+
4/27/2023 11:48:04 0.4756 89.8655 354.790 0.067 1.022 -6.860 85.680 46.367 7.316 *+
5/26/2023 23:37:02 0.4756 89.0933 354.897 0.832 -1.858 -6.158 82.839 43.898 7.322 *+
6/25/2023 10:50:01 0.4756 88.5489 354.973 1.371 -4.473 -4.097 80.279 41.685 7.259 *+
7/24/2023 21:48:48 0.4756 88.3668 354.998 1.551 -6.451 -1.067 78.378 40.052 7.137 *+
8/23/2023 08:57:32 0.4756 88.5944 354.967 1.326 -7.352 2.334 77.540 39.335 6.972 *+
9/21/2023 20:38:52 0.4756 89.1818 354.885 0.744 -6.760 5.270 78.105 39.815 6.791 *+
10/21/2023 09:09:43 0.4756 89.9830 354.773 -0.049 -4.539 6.755 80.155 41.573 6.635 *+
11/19/2023 22:36:20 0.4756 90.7783 354.663 -0.837 -1.138 6.019 83.330 44.316 6.548 *+
12/19/2023 12:50:19 0.4756 91.3299 354.586 -1.383 2.471 3.109 86.843 47.372 6.554 *+
1/18/2024 03:28:20 0.4756 91.4624 354.568 -1.514 5.339 -0.897 89.785 49.940 6.646 *+
2/16/2024 17:58:43 0.4756 91.1341 354.613 -1.189 6.963 -4.479 91.516 51.452 6.791 *+
3/17/2024 07:52:29 0.4756 90.4537 354.708 -0.515 7.213 -6.531 91.818 51.716 6.953 *+
4/15/2024 20:52:45 0.4756 89.6311 354.822 0.299 6.156 -6.706 90.786 50.818 7.105 *+
5/15/2024 08:57:57 0.4756 88.8985 354.924 1.025 4.013 -5.243 88.697 48.995 7.233 *+
6/13/2024 20:19:25 0.4756 88.4453 354.988 1.473 1.161 -2.652 85.934 46.587 7.321 *+
7/13/2024 07:17:01 0.4756 88.3800 354.997 1.538 -1.911 0.476 82.950 43.994 7.347 *+
8/11/2024 18:14:57 0.4756 88.7171 354.950 1.204 -4.660 3.530 80.236 41.649 7.293 *+
9/10/2024 05:38:04 0.4756 89.3759 354.858 0.552 -6.558 5.867 78.272 39.963 7.154 *+
10/9/2024 17:47:29 0.4756 90.1910 354.744 -0.255 -7.190 6.828 77.468 39.274 6.957 *+
11/8/2024 06:55:02 0.4756 90.9404 354.640 -0.997 -6.377 5.890 78.079 39.795 6.755 *+
12/7/2024 20:57:41 0.4756 91.4006 354.576 -1.453 -4.247 3.009 80.126 41.549 6.608 *+
1/6/2025 11:35:33 0.4756 91.4222 354.573 -1.475 -1.171 -1.031 83.289 44.281 6.548 *+
2/5/2025 02:16:57 0.4756 90.9937 354.633 -1.050 2.289 -4.730 86.875 47.400 6.570 *+
3/6/2025 16:29:30 0.4756 90.2514 354.736 -0.315 5.353 -6.680 89.981 50.109 6.656 *+
4/5/2025 05:51:01 0.4756 89.4234 354.851 0.505 7.214 -6.369 91.851 51.742 6.787 *+
5/4/2025 18:14:27 0.4756 88.7456 354.946 1.176 7.449 -4.227 92.153 52.007 6.947 *+
6/3/2025 05:46:59 0.4756 88.3929 354.995 1.525 6.177 -1.114 90.992 50.996 7.114 *+
7/2/2025 16:46:17 0.4756 88.4461 354.987 1.472 3.853 2.133 88.745 49.037 7.260 *+
8/1/2025 03:36:29 0.4756 88.8861 354.926 1.037 1.007 4.844 85.884 46.543 7.351 *+
8/30/2025 14:44:15 0.4756 89.6031 354.826 0.327 -1.891 6.512 82.867 43.923 7.359 *+
9/29/2025 02:33:55 0.4756 90.4158 354.713 -0.478 -4.453 6.758 80.121 41.551 7.278 *+
10/28/2025 15:21:41 0.4756 91.1043 354.617 -1.160 -6.340 5.382 78.072 39.794 7.123 *+
11/27/2025 05:09:25 0.4756 91.4636 354.567 -1.516 -7.196 2.492 77.173 39.025 6.932 *+
12/26/2025 19:41:34 0.4756 91.3730 354.580 -1.426 -6.645 -1.296 77.830 39.583 6.749 *+
1/25/2026 10:28:35 0.4756 90.8515 354.653 -0.909 -4.465 -4.812 80.158 41.576 6.609 *+
2/24/2026 00:56:43 0.4756 90.0606 354.763 -0.126 -0.981 -6.692 83.697 44.634 6.539 *+
3/25/2026 14:39:06 0.4756 89.2427 354.876 0.684 2.795 -6.165 87.469 47.916 6.552 *+
4/24/2026 03:22:41 0.4756 88.6321 354.962 1.288 5.713 -3.563 90.451 50.518 6.646 *+
5/23/2026 15:09:19 0.4756 88.3859 354.996 1.532 7.182 0.014 92.034 51.900 6.797 *+
6/22/2026 02:13:38 0.4756 88.5552 354.972 1.365 7.212 3.414 92.115 51.973 6.972 *+
7/21/2026 12:59:12 0.4756 89.0876 354.898 0.837 6.067 5.830 90.896 50.912 7.136 *+
8/19/2026 23:54:12 0.4756 89.8469 354.792 0.085 4.020 6.838 88.679 48.980 7.262 *+
9/18/2026 11:25:58 0.4756 90.6401 354.682 -0.700 1.316 6.310 85.792 46.465 7.333 *+
10/17/2026 23:54:28 0.4756 91.2532 354.597 -1.307 -1.742 4.356 82.624 43.714 7.336 *+
11/16/2026 13:25:57 0.4756 91.5033 354.562 -1.555 -4.691 1.320 79.689 41.181 7.267 *+
12/16/2026 03:49:13 0.4756 91.3004 354.590 -1.354 -6.886 -2.170 77.619 39.407 7.123 *+
1/14/2027 18:37:38 0.4756 90.6938 354.674 -0.753 -7.645 -5.203 77.008 38.884 6.926 *+
2/13/2027 09:17:31 0.4756 89.8678 354.789 0.065 -6.586 -6.752 78.135 39.843 6.723 *+
3/14/2027 23:18:47 0.4756 89.0744 354.900 0.850 -3.955 -6.100 80.765 42.098 6.576 *+
4/13/2027 12:22:58 0.4756 88.5419 354.974 1.378 -0.543 -3.352 84.220 45.087 6.522 *+
5/13/2027 00:26:25 0.4756 88.4060 354.993 1.512 2.798 0.492 87.665 48.085 6.561 *+
6/11/2027 11:39:51 0.4756 88.6860 354.954 1.235 5.488 4.072 90.387 50.461 6.666 *+
7/10/2027 22:25:14 0.4756 89.2980 354.869 0.629 7.156 6.324 91.938 51.816 6.808 *+
8/9/2027 09:11:13 0.4756 90.0828 354.759 -0.148 7.533 6.784 92.112 51.971 6.962 *+
9/7/2027 20:27:19 0.4756 90.8395 354.654 -0.898 6.502 5.526 90.914 50.929 7.115 *+
10/7/2027 08:36:55 0.4756 91.3645 354.581 -1.417 4.192 2.968 88.548 48.867 7.251 *+
11/5/2027 21:50:36 0.4756 91.4999 354.562 -1.551 1.016 -0.279 85.432 46.153 7.343 *+
12/5/2027 12:01:46 0.4756 91.1876 354.606 -1.242 -2.383 -3.494 82.160 43.314 7.359 *+
1/4/2028 02:47:29 0.4756 90.5066 354.700 -0.568 -5.273 -5.913 79.391 40.926 7.274 *+
2/2/2028 17:35:07 0.4756 89.6603 354.818 0.270 -7.049 -6.841 77.675 39.455 7.099 *+
3/3/2028 07:52:18 0.4756 88.9064 354.923 1.017 -7.396 -5.869 77.343 39.169 6.885 *+
4/1/2028 21:15:49 0.4756 88.4624 354.985 1.456 -6.309 -3.113 78.474 40.131 6.698 *+
5/1/2028 09:36:53 0.4756 88.4392 354.988 1.479 -3.968 0.671 80.902 42.214 6.576 *+
5/30/2028 21:02:13 0.4756 88.8241 354.935 1.098 -0.708 4.264 84.187 45.056 6.532 *+
6/29/2028 07:51:37 0.4756 89.5026 354.840 0.426 2.873 6.462 87.637 48.060 6.558 *+
7/28/2028 18:33:14 0.4756 90.2963 354.730 -0.360 5.929 6.597 90.472 50.535 6.647 *+
8/27/2028 05:37:17 0.4756 91.0016 354.632 -1.058 7.673 4.768 92.064 51.926 6.787 *+
9/25/2028 17:29:21 0.4756 91.4289 354.572 -1.481 7.736 1.658 92.115 51.975 6.962 *+
10/25/2028 06:23:47 0.4756 91.4477 354.570 -1.500 6.244 -1.820 90.708 50.751 7.144 *+
11/23/2028 20:19:08 0.4756 91.0327 354.627 -1.089 3.643 -4.789 88.212 48.575 7.292 *+
12/23/2028 10:57:23 0.4756 90.2907 354.731 -0.354 0.494 -6.559 85.140 45.900 7.369 *+
1/22/2029 01:48:25 0.4756 89.4411 354.849 0.487 -2.661 -6.717 82.029 43.201 7.350 *+
2/20/2029 16:18:36 0.4756 88.7422 354.946 1.179 -5.350 -5.201 79.381 40.917 7.241 *+
3/22/2029 06:00:18 0.4756 88.3970 354.994 1.521 -7.135 -2.329 77.663 39.443 7.070 *+
4/20/2029 18:39:28 0.4756 88.4891 354.981 1.430 -7.608 1.223 77.268 39.103 6.874 *+
5/20/2029 06:18:36 0.4756 88.9726 354.914 0.951 -6.487 4.511 78.401 40.067 6.692 *+
6/18/2029 17:15:03 0.4756 89.7051 354.812 0.226 -3.831 6.519 80.927 42.235 6.559 *+
7/18/2029 03:55:54 0.4756 90.4928 354.702 -0.554 -0.218 6.502 84.319 45.170 6.503 *+
8/16/2029 14:51:24 0.4756 91.1337 354.613 -1.189 3.393 4.384 87.782 48.187 6.539 *+
9/15/2029 02:28:18 0.4756 91.4567 354.568 -1.509 6.119 0.874 90.521 50.579 6.655 *+
10/14/2029 15:03:50 0.4756 91.3610 354.582 -1.414 7.491 -2.852 91.993 51.867 6.826 *+
11/13/2029 04:41:12 0.4756 90.8533 354.652 -0.911 7.415 -5.663 91.996 51.873 7.012 *+
12/12/2029 19:07:54 0.4756 90.0660 354.762 -0.132 5.994 -6.842 90.611 50.668 7.178 *+
* = Target feature on visible disk
+ = Azimuth of Sun within 5.00° of target (= 91.251°)
*** search completed ***