RECON TNO event watchlist

This table lists the candidates for TNO occultation for the next two years that are visible from the entire network. Green lines have cross-track errors less than 1000 km. Yellow lines are below 2000 km. Orange lines are below 3000 km. Red lines are below 6000 km.

This list was last updated at 2017/12/12 17:02:21 UT

Idx ET Desig Diam(5%) Diam(30%) DES Classification TNO pos err StarID RA Dec mag minsep selong RECON Prob
89566 2017 Nov 29 10:00:15 05UN524 84 34 CENTAURR 1.37 UC4-645-039757 06:41:49.4 +38:59:15 15.7 0.27 145 1.00 9.1%
92172 2017 Dec 01 06:23:24 95WY2 220 90 CLASSICAL 0.32 UC4-567-035083 07:01:34.5 +23:23:17 15.3 0.26 145 1.00 6.8%
125105 2017 Dec 01 07:14:48 450265 331 135 3:2E 0.16 UC4-586-035913 06:55:41.7 +27:06:31 14.9 0.21 146 1.00 12.1%
94855 2017 Dec 08 07:06:04 248835 76 31 CENTAURR 0.99 UC4-675-021968 03:41:46.2 +44:55:28 15.3 0.08 153 1.00 8.9%
104254 2017 Dec 09 05:24:15 456826 174 71 3:2E+6:4II 0.26 UC4-521-011992 05:20:26.7 +14:11:51 14.9 0.28 171 1.00 12.2%
95650 2017 Dec 10 08:00:29 48639 661 270 SCATNEAR 0.16 UC4-542-006071 03:16:46.1 +18:17:27 15.5 0.08 153 1.00 9.0%
94638 2017 Dec 11 03:46:20 149349 302 123 5:3EE 0.18 UC4-536-005733 03:14:31.4 +17:05:47 15.4 0.24 152 1.00 10.7%
94685 2017 Dec 11 08:02:07 15875 240 98 3:2E 1.36 UC4-591-018990 05:28:00.4 +28:00:52 16.3 0.11 174 1.00 37.8%
95741 2017 Dec 13 04:55:46 69986 159 65 3:2E 1.00 UC4-527-017458 05:51:15.5 +15:21:27 15.3 0.08 170 1.00 9.1%
94686 2017 Dec 13 11:59:40 15875 240 98 3:2E 1.36 UC4-591-018936 05:27:43.7 +28:00:37 15.8 0.07 175 1.00 24.6%
95743 2017 Dec 18 09:33:22 69986 159 65 3:2E 1.00 UC4-527-017314 05:50:43.7 +15:20:55 14.8 0.16 172 1.00 9.6%
141245 2017 Dec 21 07:35:43 14WP509 649 265 CLASSICAL 0.45 UC4-589-035602 06:49:11.8 +27:45:24 15.9 0.25 168 1.00 6.4%
214982 2017 Dec 25 05:49:51 04TT357 191 78 5:2EEE 1.24 TYC21270-00926-1 04:38:50.0 +18:40:19 11.5 0.03 157 1.00 7.9%
92835 2017 Dec 26 08:56:57 00SR331 106 43 5:2EEE 0.70 UC4-543-035088 06:49:52.4 +18:32:39 16.1 0.12 172 1.00 19.3%
93425 2017 Dec 30 08:43:37 05UN524 84 34 CENTAURR 1.37 UC4-647-039174 06:35:29.3 +39:15:33 15.5 0.19 164 1.00 14.1%
95372 2018 Jan 02 12:21:33 33340 302 123 3:2E 0.31 UC4-558-035961 06:54:08.5 +21:30:03 16.2 0.09 178 1.00 15.7%
97975 2018 Jan 10 05:51:01 03TK58 236 96 CLASSICAL 0.46 UC4-574-020193 05:51:48.0 +24:39:47 15.5 0.10 158 1.00 8.2%
101969 2018 Jan 12 05:46:29 98UR43 129 53 3:2E 0.65 UC4-585-014920 05:09:46.5 +26:54:47 15.9 0.27 147 1.00 5.7%
99484 2018 Jan 16 06:05:30 119979 631 258 2:1E 0.66 UC4-549-018299 05:43:11.8 +19:41:22 16.5 0.17 150 1.00 5.3%
104261 2018 Jan 24 07:27:31 456826 174 71 3:2E+6:4II 0.26 UC4-522-011492 05:15:29.9 +14:20:49 16.5 0.12 134 1.00 4.0%
110412 2018 Jan 30 04:56:14 69987 240 98 CLASSICAL 0.34 UC4-558-011718 04:50:14.5 +21:31:59 14.7 0.14 124 1.00 6.1%
100516 2018 Jan 30 10:34:19 315530 661 270 SCATEXTD 0.14 UC4-639-044345 10:00:55.9 +37:47:57 14.6 0.11 155 1.00 7.7%
103773 2018 Feb 05 08:33:16 00CQ114 286 117 CLASSICAL 0.28 UC4-465-047458 11:51:54.4 +02:52:48 12.5 0.21 139 1.00 3.1%
104973 2018 Feb 27 08:56:14 131697 138 56 5:4E 0.51 UC4-531-048534 09:16:25.9 +16:09:53 14.7 0.03 158 1.00 5.9%
109882 2018 Mar 12 05:17:15 248835 76 31 CENTAURR 0.99 UC4-660-017724 03:38:55.6 +41:54:20 14.6 0.24 73 1.00 3.5%
107553 2018 Mar 27 10:01:17 00FX53 149 61 SCATNEAR 0.26 UC4-409-056573 13:46:56.6 -08:18:46 15.8 0.07 159 1.00 5.8%
123214 2018 Apr 22 09:44:29 03HF57 114 47 3:2E 0.39 UC4-362-069083 15:09:16.3 -17:42:27 15.5 0.10 162 1.00 3.7%
220720 2018 Apr 29 09:48:59 500840 166 68 CLASSICAL 0.17 UC4-377-068427 14:47:42.2 -14:45:10 15.9 0.29 175 1.00 5.7%
124035 2018 May 10 09:34:01 04KV18 96 39 CENTAURR 0.27 UC4-367-097218 17:39:03.5 -16:38:44 16.4 0.16 144 1.00 8.5%
119947 2018 May 24 08:27:07 13GF138 206 84 CLASSICAL 0.20 UC4-372-067954 14:47:48.7 -15:43:09 14.5 0.06 161 1.00 4.5%
227494 2018 May 25 09:10:00 503858 105 43 3:2E 0.14 UC4-381-120941 18:36:07.8 -13:51:29 16.2 0.15 144 1.00 15.5%
221488 2018 Jun 08 08:36:32 500885 96 39 3:2E 0.30 UC4-375-078570 16:46:07.0 -15:08:24 14.5 0.10 171 1.00 8.7%
228127 2018 Jun 08 08:38:37 505624 457 187 SCATEXTD 0.10 UC4-455-060182 16:05:49.6 +00:55:18 16.1 0.22 152 1.00 17.0%
207408 2018 Jul 23 07:27:12 14JN80 319 130 SCATEXTD 0.30 UC4-418-068673 17:01:29.1 -06:30:20 14.0 0.09 133 1.00 8.8%
212129 2018 Sep 09 09:24:18 11UD63 113 46 CENTAURR 0.23 UC4-584-006084 02:38:24.0 +26:44:00 14.5 0.26 120 1.00 8.2%
153164 2018 Sep 12 11:25:44 10TH 88 36 CENTAURR 0.12 UC4-471-011981 05:33:36.8 +04:01:44 16.0 0.12 87 1.00 29.6%
152743 2018 Sep 20 07:54:59 470596 501 205 SCATNEAR 0.33 UC4-450-132118 21:17:20.8 -00:05:16 16.8 0.16 142 1.00 6.1%
228443 2018 Oct 04 11:38:08 504555 347 142 3:2E 0.17 UC4-441-003358 02:34:40.2 -01:56:04 16.4 0.21 151 1.00 15.3%
220015 2018 Oct 09 06:50:26 13UG17 133 54 CLASSICAL 0.14 UC4-484-001935 01:23:29.3 +06:44:41 13.9 0.15 174 1.00 3.1%
223104 2018 Oct 17 09:15:05 06UO321 197 80 CLASSICAL 0.23 UC4-479-001672 01:10:57.8 +05:37:55 14.9 0.17 175 1.00 8.4%
156261 2018 Oct 18 05:47:39 8405 91 37 CENTAURR 0.22 UC4-652-028542 05:11:14.7 +40:17:39 15.5 0.13 123 1.00 21.3%
155121 2018 Oct 18 07:11:10 248835 76 31 CENTAURR 0.99 UC4-667-025977 04:31:16.8 +43:16:25 13.9 0.17 128 1.00 11.1%
155122 2018 Oct 20 07:45:15 248835 76 31 CENTAURR 0.99 UC4-667-025918 04:30:55.4 +43:16:45 16.3 0.22 130 1.00 11.2%
151346 2018 Oct 25 06:14:37 02QX47 108 44 CENTAURR 0.30 UC4-537-002803 01:34:06.0 +17:21:05 14.3 0.05 172 1.00 10.6%
154021 2018 Oct 26 04:07:33 143707 437 178 5:2EEE 0.09 UC4-561-006100 03:04:56.4 +22:06:43 14.5 0.25 162 1.00 16.0%
155259 2018 Nov 03 07:39:16 29981 110 45 CENTAURR 0.41 UC4-534-036907 07:01:22.1 +16:40:16 13.0 0.15 116 1.00 27.1%
166696 2018 Nov 16 09:12:46 55636 1259 514 SCATEXTD 0.06 UC4-627-004203 01:20:19.9 +35:19:33 16.1 0.13 148 1.00 13.3%
166776 2018 Nov 24 10:00:21 8405 91 37 CENTAURR 0.22 UC4-653-028265 05:05:08.0 +40:30:28 15.1 0.18 156 1.00 11.5%
224114 2018 Nov 25 07:51:00 505476 288 118 CLASSICAL 0.08 UC4-480-001832 01:14:30.3 +05:55:42 15.4 0.06 137 1.00 24.6%
166798 2018 Nov 30 07:43:03 84719 631 258 3:2E+6:4II 0.12 UC4-589-008717 03:33:26.4 +27:45:44 15.8 0.08 167 1.00 13.0%
166728 2018 Dec 01 06:44:31 69986 159 65 3:2E 1.00 UC4-526-020426 06:00:06.5 +15:01:37 15.2 0.16 157 1.00 9.0%
172004 2018 Dec 09 06:18:01 78799 479 195 CENTAURR 1.01 UC4-619-030673 06:06:51.2 +33:46:58 15.8 0.18 162 1.00 6.3%
171418 2018 Dec 14 10:45:55 341275 115 47 CENTAURR 0.65 UC4-691-031494 04:53:49.9 +48:09:55 16.0 0.23 154 1.00 14.2%
173974 2018 Dec 19 07:29:57 14UT114 105 43 CENTAURR 0.30 UC4-633-015909 04:05:13.3 +36:29:04 16.0 0.25 154 1.00 11.6%
173555 2018 Dec 20 12:04:21 14YX49 107 44 CENTAURR 0.43 UC4-617-044708 08:49:48.6 +33:19:25 16.0 0.12 140 1.00 8.4%
168615 2018 Dec 22 08:24:21 01VN71 102 42 3:2E 0.31 UC4-612-034248 06:38:27.4 +32:19:38 15.9 0.10 168 1.00 8.7%
169816 2018 Dec 23 04:13:13 470443 794 324 SCATEXTD 0.36 UC4-611-016946 04:55:21.4 +32:11:16 14.9 0.05 162 1.00 7.6%
170653 2018 Dec 24 02:23:19 145451 794 324 SCATNEAR 0.06 UC4-534-010144 04:52:51.2 +16:45:24 13.5 0.08 161 1.00 25.6%
173440 2018 Dec 25 02:50:57 14QY441 457 187 4:3E 0.14 UC4-564-014043 05:08:34.4 +22:42:12 16.5 0.21 165 1.00 15.4%
172335 2018 Dec 26 09:58:15 98UR43 129 53 3:2E 0.65 UC4-588-017801 05:22:07.3 +27:27:03 14.7 0.17 167 1.00 6.6%
170315 2018 Dec 27 04:19:56 120347 912 372 SCATEXTD 0.16 UC4-561-142104 23:24:24.9 +22:06:10 16.0 0.20 86 1.00 7.8%
168625 2019 Jan 03 08:08:33 01XR254 417 170 CLASSICAL 0.36 UC4-544-045429 08:15:54.0 +18:40:35 16.0 0.00 160 1.00 12.4%
171984 2019 Jan 06 09:47:47 69986 159 65 3:2E 1.00 UC4-525-019203 05:56:30.4 +14:58:56 15.7 0.12 162 1.00 5.7%
179173 2019 Jan 28 05:11:20 14YY49 58 24 CENTAURR 0.20 UC4-458-028181 06:59:55.5 +01:25:26 14.6 0.27 150 1.00 29.3%
178060 2019 Jan 30 06:49:11 69990 132 54 3:2E 1.99 UC4-550-019478 05:48:21.3 +19:55:24 16.5 0.08 137 1.00 7.5%
181314 2019 Feb 11 08:12:43 309139 66 27 CENTAURR 0.89 UC4-368-051125 08:43:56.9 -16:27:30 15.1 0.07 147 1.00 3.3%
180694 2019 Feb 19 03:35:05 119315 72 30 CENTAURR 0.71 UC4-655-045769 06:50:19.1 +40:59:30 16.3 0.17 128 1.00 9.6%
184950 2019 Mar 09 09:00:22 16AE193 145 59 CENTAURR 0.14 UC4-517-048485 08:54:35.8 +13:12:03 14.1 0.18 144 1.00 12.4%
183955 2019 Mar 09 09:28:06 136472 6607 2697 SCATEXTD 0.04 UC4-572-049881 13:06:10.9 +24:12:23 14.7 0.04 147 1.00 11.3%
183867 2019 Mar 15 07:39:17 126154 479 195 5:3EE 0.17 UC4-557-046794 09:18:30.4 +21:14:37 13.5 0.04 141 1.00 15.1%
186073 2019 Mar 17 08:38:59 487581 479 195 SCATNEAR 0.21 UC4-506-052869 11:19:39.0 +11:07:35 13.7 0.23 168 1.00 5.6%
195516 2019 Apr 22 10:27:26 05GF187 158 64 3:2E 0.19 UC4-353-085029 16:58:50.3 -19:24:26 12.3 0.14 136 1.00 6.1%
190596 2019 May 08 10:19:27 470309 240 98 CENTAURS 0.08 UC4-467-063296 17:39:15.3 +03:18:56 15.8 0.21 136 1.00 23.3%
189845 2019 May 18 07:48:25 04HX78 144 59 3:2E 0.43 UC4-380-084178 17:28:05.9 -14:04:25 15.2 0.11 153 1.00 3.2%
190850 2019 May 30 07:59:28 129772 219 89 CLASSICAL 0.30 UC4-393-059103 14:20:17.6 -11:25:19 16.4 0.08 148 1.00 4.8%
189851 2019 Jun 01 06:37:37 04HX78 144 59 3:2E 0.43 UC4-380-083770 17:26:48.2 -14:00:56 11.4 0.02 165 1.00 5.0%
228003 2019 Aug 01 06:01:09 503858 105 43 3:2E 0.14 UC4-383-118625 18:38:15.5 -13:28:30 16.4 0.14 150 1.00 15.0%
209439 2019 Aug 17 04:54:26 342842 83 34 CENTAURR 0.11 UC4-776-040469 20:08:50.0 +65:11:40 12.0 0.06 99 1.00 22.8%
210709 2019 Aug 20 05:29:01 14LM28 73 30 CENTAURR 0.16 UC4-597-055120 16:56:12.5 +29:19:51 16.3 0.14 97 1.00 8.5%
212435 2019 Sep 11 09:51:56 15874 501 205 SCATNEAR 0.17 UC4-486-011020 05:17:51.6 +07:09:16 12.4 0.21 89 1.00 4.1%
220027 2019 Sep 16 08:50:23 13UG17 133 54 CLASSICAL 0.14 UC4-487-002189 01:30:38.7 +07:16:27 11.9 0.14 149 1.00 7.8%
223915 2019 Sep 26 05:40:33 505448 363 148 CLASSICAL 0.05 UC4-476-001659 01:04:52.3 +05:04:27 14.4 0.09 166 1.00 12.7%
211269 2019 Oct 02 09:49:07 01QX322 411 168 SCATNEAR 0.14 UC4-609-004955 01:47:23.7 +31:44:45 16.2 0.24 147 1.00 5.7%
215739 2019 Oct 18 04:06:48 10RO64 535 218 SCATEXTD 0.13 UC4-443-002036 01:39:45.7 -01:27:21 16.4 0.02 169 1.00 4.4%
229127 2019 Oct 21 04:24:15 506121 347 142 CLASSICAL 0.18 UC4-493-002105 01:26:14.9 +08:35:21 15.3 0.09 176 1.00 3.2%
214733 2019 Oct 22 10:28:47 03TL58 220 90 CLASSICAL 0.32 UC4-554-025039 06:22:48.9 +20:47:26 14.8 0.20 113 1.00 9.1%
218812 2019 Oct 25 05:30:27 444030 692 282 SCATEXTD 0.18 UC4-551-136923 21:44:25.4 +20:01:04 16.3 0.27 119 1.00 5.6%
222188 2019 Nov 08 03:56:48 471954 501 205 SCATEXTD 0.17 UC4-469-136302 23:51:15.9 +03:43:44 14.0 0.10 134 1.00 4.8%
222112 2019 Nov 09 10:24:02 00SR331 106 43 5:2EEE 0.70 UC4-541-039078 07:13:12.9 +18:01:02 16.4 0.01 119 1.00 10.9%
225344 2019 Nov 13 07:50:35 8405 91 37 CENTAURR 0.22 UC4-655-032790 05:20:15.1 +40:51:49 15.9 0.00 144 1.00 45.8%
222476 2019 Nov 13 10:20:44 03UV292 211 86 3:2E 0.60 UC4-539-018773 05:45:54.4 +17:43:38 15.8 0.03 144 1.00 8.7%
225237 2019 Nov 17 08:26:50 54598 191 78 CENTAURR 0.09 UC4-668-024120 04:09:20.5 +43:35:33 15.8 0.11 154 1.00 58.2%
223589 2019 Nov 18 12:20:49 10VQ11 476 195 SCATEXTD 0.21 UC4-498-012237 05:22:57.3 +09:34:43 15.4 0.01 152 1.00 14.3%
225636 2019 Nov 21 11:54:56 98WY31 257 105 CLASSICAL 0.47 UC4-572-033437 06:44:41.5 +24:13:08 13.8 0.12 138 1.00 6.4%
226342 2019 Nov 26 07:08:15 11UK413 318 130 SCATEXTD 0.55 UC4-558-018009 05:36:24.5 +21:27:57 16.5 0.12 159 1.00 6.4%
223158 2019 Nov 27 12:07:37 07TG422 342 140 CENTAURS 0.26 UC4-498-009016 04:48:42.0 +09:31:33 16.0 0.18 165 1.00 7.6%
228456 2019 Nov 28 04:31:10 504555 347 142 3:2E 0.17 UC4-440-003286 02:37:36.9 -02:04:24 13.2 0.21 147 1.00 25.5%
229151 2019 Dec 07 10:20:09 00WO183 196 80 CLASSICAL 0.37 UC4-561-023720 06:01:21.6 +22:10:13 12.5 0.27 164 1.00 3.0%
229916 2019 Dec 11 03:51:05 248835 76 31 CENTAURR 0.99 UC4-652-023726 04:49:16.9 +40:13:42 15.4 0.06 162 1.00 6.8%
229272 2019 Dec 11 05:37:03 03UV292 211 86 3:2E 0.60 UC4-539-018218 05:43:28.1 +17:39:52 15.4 0.18 171 1.00 4.9%
230238 2019 Dec 13 08:13:19 54598 191 78 CENTAURR 0.09 UC4-667-021829 04:01:55.1 +43:18:32 15.4 0.06 154 1.00 69.8%

For all of these events the star is visible to the entire RECON network at the time of the appulse. This corresponds to a "score" (second to last column) of 1. The last column is the estimate of the probability of success for RECON if it attempts this event. This number is based on the uncertainty in the prediction combined with the actual geometry for RECON for the event. In general, we look for a probability greater than about 30% for an official RECON campaign. This probability does not include any factors such as weather.

Most of the columns are self-explanatory. The two diameters give an estimate of the size of the object for two different albedos (5% and 30%). "TNO pos err" is the uncertainty in the position of the TNO at the time of the appulse, in arc-seconds. An additional uncertainty of 0.05 arcsec is assumed for the uncertainty in the star position. "minsep" is the minimum separation (in arcsec) between the star and TNO as seen from the position of the center of the earth. "selong" is the angle between the sun and the object (solar elongation) at the time of the event.

Marc W. Buie, Southwest Research Institute

RECON