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 2018/04/21 16:02:52 UT

Idx ET Desig Diam(5%) Diam(30%) DES Classification TNO pos err StarID RA Dec mag minsep selong RECON Prob
123214 2018 Apr 22 09:44:29 03HF57 114 47 3:2E 0.34 UC4-362-069083 15:09:16.3 -17:42:27 15.5 0.07 162 1.00 4.3%
220720 2018 Apr 29 09:48:59 500840 166 68 CLASSICAL 0.20 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 0.42 UC4-367-097218 17:39:03.5 -16:38:44 16.4 0.16 144 1.00 8.5%
116716 2018 May 23 05:41:12 08KV42 105 43 CENTAURR 0.15 UC4-669-060716 16:35:36.3 +43:42:53 16.6 0.01 115 1.00 16.3%
119947 2018 May 24 08:27:07 13GF138 206 84 CLASSICAL 0.22 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 0.28 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 0.47 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 0.15 UC4-455-060182 16:05:49.6 +00:55:18 16.1 0.22 152 1.00 16.3%
207408 2018 Jul 23 07:27:12 14JN80 319 130 SCATEXTD 0.56 UC4-418-068673 17:01:29.1 -06:30:20 14.0 0.09 133 1.00 8.8%
238064 2018 Sep 05 10:18:06 04VY130 145 59 3:2E 0.15 UC4-536-013250 05:17:30.8 +17:07:11 14.9 0.21 83 1.00 6.6%
153164 2018 Sep 12 11:25:44 10TH 88 36 CENTAURR 0.11 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 0.41 UC4-450-132118 21:17:20.8 -00:05:16 16.8 0.16 142 1.00 6.1%
152961 2018 Oct 03 10:08:50 470443 794 324 SCATEXTD 0.17 UC4-611-017522 05:01:08.6 +32:06:58 16.1 0.26 112 1.00 4.1%
228443 2018 Oct 04 11:38:08 504555 347 142 3:2E 0.19 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 0.15 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 0.25 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 0.20 UC4-652-028542 05:11:14.7 +40:17:39 15.5 0.13 123 1.00 21.7%
155122 2018 Oct 20 07:45:15 248835 76 31 CENTAURR 0.33 UC4-667-025918 04:30:55.4 +43:16:45 16.3 0.09 130 1.00 32.3%
151346 2018 Oct 25 06:14:37 02QX47 108 44 CENTAURR 0.38 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 0.08 UC4-561-006100 03:04:56.4 +22:06:43 14.5 0.25 162 1.00 15.9%
155259 2018 Nov 03 07:39:16 29981 110 45 CENTAURR 0.37 UC4-534-036907 07:01:22.1 +16:40:16 13.0 0.15 116 1.00 27.1%
235109 2018 Nov 14 07:48:22 10XE91 291 119 SCATNEAR 0.33 UC4-488-015609 05:53:17.6 +07:35:42 16.2 0.21 141 1.00 17.3%
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 0.14 148 1.00 11.6%
224114 2018 Nov 25 07:51:00 505476 288 118 CLASSICAL 0.10 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 0.10 UC4-589-008717 03:33:26.4 +27:45:44 15.8 0.09 167 1.00 10.5%
166730 2018 Dec 04 10:32:06 69986 151 62 3:2E 0.19 UC4-526-020339 05:59:48.5 +15:01:09 11.8 0.13 160 1.00 28.5%
165720 2018 Dec 08 11:57:44 248835 76 31 CENTAURR 0.33 UC4-665-024329 04:18:37.6 +42:48:17 16.0 0.11 158 1.00 21.0%
171418 2018 Dec 14 10:45:55 341275 115 47 CENTAURR 0.62 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 0.29 UC4-633-015909 04:05:13.3 +36:29:04 16.0 0.25 154 1.00 11.6%
168436 2018 Dec 20 10:48:23 00SR331 105 43 5:2EEE 0.25 UC4-542-036443 07:00:26.2 +18:18:14 16.4 0.19 163 1.00 15.6%
173555 2018 Dec 20 12:04:21 14YX49 107 44 CENTAURR 0.32 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 0.44 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 0.17 UC4-611-016946 04:55:21.4 +32:11:16 14.9 0.07 162 1.00 10.3%
170653 2018 Dec 24 02:23:19 145451 794 324 SCATNEAR 0.05 UC4-534-010144 04:52:51.2 +16:45:24 13.5 0.09 161 1.00 27.5%
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%
170315 2018 Dec 27 04:19:56 120347 912 372 SCATEXTD 0.17 UC4-561-142104 23:24:24.9 +22:06:10 16.0 0.19 86 1.00 8.0%
168625 2019 Jan 03 08:08:33 01XR254 417 170 CLASSICAL 0.26 UC4-544-045429 08:15:54.0 +18:40:35 16.0 0.00 160 1.00 12.4%
249708 2019 Jan 05 06:15:04 14WE510 170 69 3:2E 0.20 UC4-507-009335 05:03:06.5 +11:23:09 16.2 0.28 149 1.00 7.2%
175354 2019 Jan 24 01:44:42 119979 692 282 2:1E 0.20 UC4-550-019611 05:48:53.8 +19:57:11 15.6 0.00 144 1.00 17.1%
179173 2019 Jan 28 05:11:20 14YY49 58 24 CENTAURR 0.17 UC4-458-028181 06:59:55.5 +01:25:26 14.6 0.27 150 1.00 29.3%
181314 2019 Feb 11 08:12:43 309139 66 27 CENTAURR 0.81 UC4-368-051125 08:43:56.9 -16:27:30 15.1 0.07 147 1.00 3.3%
241714 2019 Feb 12 08:08:41 14WR510 201 82 3:2E 0.22 UC4-516-025136 06:22:48.6 +13:01:57 15.1 0.25 132 1.00 9.7%
182294 2019 Feb 18 07:32:42 11BV163 282 115 CLASSICAL 0.37 UC4-543-049087 09:12:46.8 +18:32:32 16.0 0.13 166 1.00 5.7%
180694 2019 Feb 19 03:35:05 119315 72 30 CENTAURR 0.53 UC4-655-045769 06:50:19.1 +40:59:30 16.3 0.17 128 1.00 9.6%
183867 2019 Mar 15 07:39:17 126154 479 195 5:3EE 0.13 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%
184110 2019 Mar 26 03:29:19 15875 240 98 3:2E 0.28 UC4-589-019286 05:33:24.0 +27:41:31 15.9 0.08 79 1.00 24.4%
183087 2019 Mar 29 06:15:36 02CT154 226 92 CLASSICAL 0.14 UC4-442-055010 12:33:32.5 -01:42:51 13.1 0.03 178 1.00 8.7%
253168 2019 Apr 19 04:55:28 14XP40 232 95 CENTAURR 0.28 UC4-416-053831 11:04:56.0 -06:57:18 16.0 0.07 140 1.00 7.9%
195516 2019 Apr 22 10:27:26 05GF187 158 64 3:2E 0.29 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 0.12 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 0.58 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 0.32 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 0.58 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 0.28 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 0.35 UC4-597-055120 16:56:12.5 +29:19:51 16.3 0.14 97 1.00 8.5%
220027 2019 Sep 16 08:50:23 13UG17 133 54 CLASSICAL 0.15 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 0.06 UC4-476-001659 01:04:52.3 +05:04:27 14.4 0.09 166 1.00 12.7%
212527 2019 Sep 27 11:33:24 248835 76 31 CENTAURR 0.33 UC4-653-027693 05:02:58.1 +40:25:32 15.1 0.29 104 1.00 12.6%
211269 2019 Oct 02 09:49:07 01QX322 411 168 SCATNEAR 0.15 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 0.32 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 0.33 UC4-554-025039 06:22:48.9 +20:47:26 14.8 0.20 113 1.00 9.1%
216397 2019 Oct 22 11:56:34 281371 83 34 CENTAURR 0.07 UC4-507-021728 06:15:14.5 +11:18:06 14.8 0.30 114 1.00 35.5%
218812 2019 Oct 25 05:30:27 444030 692 282 SCATEXTD 0.23 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 0.22 UC4-469-136302 23:51:15.9 +03:43:44 14.0 0.10 134 1.00 4.8%
225344 2019 Nov 13 07:50:35 8405 91 37 CENTAURR 0.20 UC4-655-032790 05:20:15.1 +40:51:49 15.9 0.00 144 1.00 46.8%
222476 2019 Nov 13 10:20:44 03UV292 211 86 3:2E 0.43 UC4-539-018773 05:45:54.4 +17:43:38 15.8 0.03 144 1.00 8.7%
222800 2019 Nov 16 11:50:25 04TT357 185 75 5:2EEE 0.23 UC4-544-011943 05:02:21.0 +18:42:32 13.8 0.25 157 1.00 5.1%
226690 2019 Nov 17 08:19:14 14WO510 244 100 3:2E 0.15 UC4-569-014332 05:04:52.7 +23:41:26 16.2 0.25 157 1.00 10.2%
225237 2019 Nov 17 08:26:50 54598 191 78 CENTAURR 0.07 UC4-668-024120 04:09:20.5 +43:35:33 15.8 0.17 154 1.00 26.7%
223589 2019 Nov 18 12:20:49 10VQ11 476 195 SCATEXTD 0.22 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 0.35 UC4-572-033437 06:44:41.5 +24:13:08 13.8 0.12 138 1.00 6.4%
227054 2019 Nov 23 10:17:21 10VL201 391 160 4:3E 0.14 UC4-534-007675 04:02:11.1 +16:46:35 14.3 0.25 176 1.00 3.7%
222816 2019 Nov 24 09:27:26 04VK78 143 59 2:1E 0.16 UC4-562-011582 04:43:19.7 +22:23:23 14.8 0.12 169 1.00 8.7%
226342 2019 Nov 26 07:08:15 11UK413 318 130 SCATEXTD 0.51 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 0.27 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 0.19 UC4-440-003286 02:37:36.9 -02:04:24 13.2 0.21 147 1.00 25.5%
236534 2019 Dec 03 03:05:21 14UE228 120 49 ERR2LARGE 0.16 UC4-528-003694 02:05:27.4 +15:33:21 16.3 0.20 144 1.00 8.3%
232317 2019 Dec 04 03:55:37 10VR11 472 193 SCATEXTD 0.14 UC4-542-012999 05:14:39.2 +18:18:20 14.4 0.00 171 1.00 12.4%
229151 2019 Dec 07 10:20:09 00WO183 196 80 CLASSICAL 0.44 UC4-561-023720 06:01:21.6 +22:10:13 12.5 0.27 164 1.00 3.0%
229272 2019 Dec 11 05:37:03 03UV292 211 86 3:2E 0.43 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 0.07 UC4-667-021829 04:01:55.1 +43:18:32 15.4 0.15 154 1.00 53.8%
231759 2019 Dec 14 11:30:02 04VK78 143 59 2:1E 0.16 UC4-562-011381 04:41:17.6 +22:19:47 15.9 0.04 170 1.00 7.5%
233613 2019 Dec 16 04:44:51 8405 91 37 CENTAURR 0.20 UC4-655-031366 05:13:42.4 +40:53:30 14.0 0.08 162 1.00 47.0%
234228 2019 Dec 18 07:42:26 463368 209 85 CENTAURR 0.13 TYC21307-01530-1 05:51:51.9 +19:09:19 10.7 0.03 175 1.00 22.0%
233100 2019 Dec 22 12:03:42 341275 115 47 CENTAURR 0.62 UC4-683-039034 05:31:12.4 +46:34:18 16.3 0.25 156 1.00 14.0%
233557 2019 Dec 25 08:38:01 55638 525 214 3:2E 0.07 UC4-486-019986 06:15:38.8 +07:06:55 16.0 0.18 164 1.00 36.7%
236103 2019 Dec 28 04:56:36 14UT114 105 43 CENTAURR 0.29 UC4-635-018333 04:39:30.6 +36:56:03 16.4 0.04 154 1.00 40.1%
231917 2019 Dec 31 04:40:46 06SF369 275 112 SCATNEAR 0.15 UC4-507-008512 04:52:30.2 +11:20:49 16.0 0.17 152 1.00 3.2%
232708 2020 Jan 02 02:58:42 15875 240 98 3:2E 0.28 UC4-590-022111 05:48:34.5 +27:51:02 16.4 0.21 166 1.00 23.9%
237751 2020 Jan 03 10:00:54 03UV292 211 86 3:2E 0.43 UC4-539-017660 05:41:14.7 +17:38:12 15.3 0.00 162 1.00 11.8%
249121 2020 Jan 07 08:16:13 12CS57 345 141 SCATEXTD 0.42 UC4-506-050901 09:57:11.9 +11:11:02 15.6 0.25 139 1.00 3.2%
237686 2020 Jan 08 08:27:15 02VD130 230 94 2:1E+4:2II 0.30 UC4-584-032519 06:41:58.0 +26:39:02 16.6 0.15 171 1.00 17.6%
241265 2020 Jan 15 09:50:18 449097 72 30 CENTAURR 0.18 TYC22449-00679-1 06:59:27.2 +37:05:53 7.9 0.01 161 1.00 23.8%
245704 2020 Jan 23 06:16:03 11BV163 282 115 CLASSICAL 0.37 UC4-541-048329 09:21:20.7 +18:00:05 15.8 0.18 165 1.00 6.2%
243371 2020 Jan 31 08:45:10 03UT292 252 103 3:2E 0.38 UC4-490-015768 05:53:22.7 +07:54:12 14.8 0.09 135 1.00 5.9%
244207 2020 Jan 31 09:18:36 15875 240 98 3:2E 0.28 UC4-589-021154 05:45:28.7 +27:47:06 16.5 0.02 136 1.00 14.3%
244208 2020 Feb 01 06:55:15 15875 240 98 3:2E 0.28 UC4-589-021131 05:45:24.3 +27:46:57 15.0 0.19 135 1.00 11.0%
255556 2020 Apr 12 04:59:32 14YY49 58 24 CENTAURR 0.17 UC4-463-030506 07:14:10.7 +02:24:56 13.5 0.15 87 1.00 19.5%
256187 2020 Apr 16 10:06:07 14HT199 215 88 3:2E 0.18 UC4-369-072902 15:54:21.7 -16:22:45 15.4 0.10 147 1.00 4.0%

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