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 2018/06/19 16:02:44 UT

Idx ET Desig Diam(5%) Diam(30%) DES Classification TNO pos err StarID RA Dec mag minsep selong RECON Prob
221488 2018 Jun 08 08:36:32 500885 96 39 3:2E 0.41 GA0740:06339168 16:46:07.0 -15:08:24 14.5 0.11 171 1.00 8.0%
228127 2018 Jun 08 08:38:37 505624 457 187 SCATEXTD 0.06 GA0900:04461466 16:05:49.6 +00:55:18 16.2 0.23 152 1.00 15.7%
133602 2018 Jun 13 07:22:02 13HV156 545 222 SCATNEAR 0.14 GA0860:04961754 16:40:07.0 -03:42:58 15.2 0.19 158 1.00 13.7%
129972 2018 Jun 15 08:45:06 468861 151 62 CENTAURR 0.13 GA1280:03995340 15:11:28.6 +38:20:48 14.5 0.16 110 1.00 14.3%
238064 2018 Sep 05 10:18:06 04VY130 145 59 3:2E 0.16 GA1060:00867496 05:17:30.8 +17:07:11 15.7 0.05 83 1.00 13.7%
153164 2018 Sep 12 11:25:44 10TH 88 36 CENTAURR 0.13 GA0940:00797355 05:33:36.8 +04:01:44 15.7 0.08 87 1.00 18.1%
237060 2018 Sep 13 10:58:48 14UX229 128 52 ERR2LARGE 0.29 GA1080:00224734 02:08:34.9 +18:58:34 17.1 0.20 134 1.00 6.2%
228443 2018 Oct 04 11:38:08 504555 347 142 3:2E 0.22 GA0880:00211235 02:34:40.2 -01:56:03 16.4 0.03 151 1.00 11.9%
220015 2018 Oct 09 06:50:26 13UG17 133 54 CLASSICAL 0.20 GA0960:00121218 01:23:29.3 +06:44:41 13.9 0.12 174 1.00 3.9%
223104 2018 Oct 17 09:15:05 06UO321 197 80 CLASSICAL 0.28 GA0940:00105385 01:10:57.7 +05:37:55 15.0 0.23 175 1.00 7.7%
155122 2018 Oct 20 07:45:15 248835 76 31 CENTAURR 0.36 GA1320:01948292 04:30:55.4 +43:16:45 16.4 0.12 130 1.00 29.1%
151346 2018 Oct 25 06:14:37 02QX47 108 44 CENTAURR 0.48 GA1060:00159464 01:34:06.0 +17:21:05 14.3 0.12 172 1.00 7.7%
155259 2018 Nov 03 07:39:16 29981 110 45 CENTAURR 0.38 GA1060:02572880 07:01:22.1 +16:40:16 13.1 0.26 116 1.00 19.0%
153472 2018 Nov 06 09:50:46 127546 151 62 CENTAURR 0.29 GA1640:01226860 13:59:41.3 +74:27:57 16.5 0.30 91 1.00 13.3%
220146 2018 Nov 09 07:53:40 13UO17 130 53 5:2EEE 0.20 GA0960:00140922 01:38:05.2 +07:05:47 16.1 0.20 159 1.00 14.7%
235109 2018 Nov 14 07:48:22 10XE91 291 119 SCATNEAR 0.35 GA0960:01019702 05:53:17.6 +07:35:42 16.2 0.20 141 1.00 20.0%
164206 2018 Nov 17 06:36:21 04VM131 115 47 CENTAURR 0.29 GA1040:01096756 05:44:30.6 +14:08:19 14.9 0.28 147 1.00 14.1%
165442 2018 Nov 20 10:27:37 143707 437 178 5:2EEE 0.10 GA1100:00331639 03:02:26.9 +21:55:57 14.3 0.18 171 1.00 10.7%
166776 2018 Nov 24 10:00:21 8405 91 37 CENTAURR 0.20 GA1300:02328976 05:05:08.0 +40:30:28 15.1 0.13 156 1.00 22.4%
224114 2018 Nov 25 07:51:00 505476 288 118 CLASSICAL 0.13 GA0940:00110109 01:14:30.3 +05:55:42 15.4 0.06 137 1.00 20.2%
166798 2018 Nov 30 07:43:03 84719 631 258 3:2E+6:4II 0.14 GA1160:00505199 03:33:26.4 +27:45:44 15.9 0.10 167 1.00 10.0%
166730 2018 Dec 04 10:32:06 69986 151 62 3:2E 0.18 GA1040:01393571 05:59:48.5 +15:01:09 11.7 0.08 160 1.00 28.1%
231458 2018 Dec 07 04:57:32 13PS76 181 74 ERR2LARGE 0.25 GA1040:00178827 01:51:51.7 +14:16:21 15.0 0.24 136 1.00 3.3%
165720 2018 Dec 08 11:57:44 248835 76 31 CENTAURR 0.36 GA1320:01773260 04:18:37.6 +42:48:17 16.3 0.04 158 1.00 21.5%
171964 2018 Dec 15 07:39:15 55636 1259 514 SCATEXTD 0.07 GA1240:00243616 01:18:39.4 +35:00:11 16.3 0.19 125 1.00 12.3%
173555 2018 Dec 20 12:04:21 14YX49 107 44 CENTAURR 0.34 GA1220:03358482 08:49:48.5 +33:19:25 16.5 0.02 140 1.00 11.5%
168615 2018 Dec 22 08:24:21 01VN71 102 42 3:2E 0.38 GA1220:02840131 06:38:27.4 +32:19:38 16.3 0.03 168 1.00 9.2%
169816 2018 Dec 23 04:13:13 470443 794 324 SCATEXTD 0.22 GA1220:01299123 04:55:21.4 +32:11:16 14.8 0.12 162 1.00 7.4%
170653 2018 Dec 24 02:23:19 145451 794 324 SCATNEAR 0.05 GA1060:00666473 04:52:51.2 +16:45:24 13.5 0.10 161 1.00 28.3%
173440 2018 Dec 25 02:50:57 14QY441 457 187 4:3E 0.15 GA1120:00984447 05:08:34.4 +22:42:12 16.4 0.11 165 1.00 25.7%
169932 2018 Dec 25 10:11:57 10VR11 472 193 SCATEXTD 0.13 GA1060:00764801 05:06:34.6 +17:18:37 16.4 0.21 163 1.00 12.5%
173567 2018 Dec 27 07:38:40 14YY49 58 24 CENTAURR 0.19 GA0900:02329860 07:05:14.9 +01:11:30 15.8 0.19 156 1.00 18.1%
171054 2018 Dec 27 08:04:01 24835 725 296 SCATEXTD 0.19 GA1240:00625535 03:08:58.8 +34:43:33 15.7 0.25 137 1.00 6.4%
249708 2019 Jan 05 06:15:04 14WE510 170 69 3:2E 0.26 GA1000:00615732 05:03:06.5 +11:23:09 16.1 0.11 149 1.00 6.3%
179173 2019 Jan 28 05:11:20 14YY49 58 24 CENTAURR 0.19 GA0900:02190224 06:59:55.5 +01:25:26 14.5 0.11 150 1.00 32.4%
181314 2019 Feb 11 08:12:43 309139 66 27 CENTAURR 0.80 GA0720:04065974 08:43:56.9 -16:27:30 15.1 0.11 147 1.00 3.5%
241714 2019 Feb 12 08:08:41 14WR510 201 82 3:2E 0.20 GA1020:01740440 06:22:48.6 +13:01:57 15.1 0.11 132 1.00 7.7%
182294 2019 Feb 18 07:32:42 11BV163 282 115 CLASSICAL 0.38 GA1080:03193487 09:12:46.8 +18:32:32 16.2 0.11 166 1.00 8.2%
180694 2019 Feb 19 03:35:05 119315 72 30 CENTAURR 0.63 GA1300:03653828 06:50:19.1 +40:59:29 16.4 0.11 128 1.00 15.7%
186073 2019 Mar 17 08:38:59 487581 479 195 SCATNEAR 0.21 GA1000:03508106 11:19:39.0 +11:07:35 13.6 0.11 168 1.00 5.6%
184110 2019 Mar 26 03:29:19 15875 240 98 3:2E 0.29 GA1160:01382919 05:33:24.0 +27:41:31 15.7 0.11 79 1.00 15.0%
183087 2019 Mar 29 06:15:36 02CT154 220 90 CLASSICAL 0.17 GA0880:04057267 12:33:32.5 -01:42:51 13.1 0.11 178 1.00 7.6%
253168 2019 Apr 19 04:55:28 14XP40 232 95 CENTAURR 0.35 GA0820:04065653 11:04:56.0 -06:57:19 16.3 0.11 140 1.00 6.5%
190596 2019 May 08 10:19:27 470309 240 98 CENTAURS 0.11 GA0920:05365261 17:39:15.3 +03:18:56 15.9 0.11 136 1.00 19.7%
189845 2019 May 18 07:48:25 04HX78 144 59 3:2E 0.55 GA0740:08311454 17:28:05.9 -14:04:25 15.1 0.11 153 1.00 5.0%
190850 2019 May 30 07:59:28 129772 219 89 7:4EEE 0.21 GA0780:04532199 14:20:17.6 -11:25:19 16.4 0.11 148 1.00 5.6%
189851 2019 Jun 01 06:37:37 04HX78 144 59 3:2E 0.55 GA0740:08166164 17:26:48.2 -14:00:56 11.4 0.11 165 1.00 5.9%
209439 2019 Aug 17 04:54:26 342842 83 34 CENTAURR 0.11 GA1540:04474836 20:08:50.0 +65:11:40 11.9 0.11 99 1.00 27.8%
220027 2019 Sep 16 08:50:23 13UG17 133 54 CLASSICAL 0.20 GA0960:00130906 01:30:38.7 +07:16:27 12.0 0.11 149 1.00 7.7%
223915 2019 Sep 26 05:40:33 505448 363 148 CLASSICAL 0.08 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 0.36 GA1300:02280283 05:02:58.1 +40:25:32 15.0 0.11 104 1.00 9.9%
211269 2019 Oct 02 09:49:07 01QX322 411 168 SCATNEAR 0.16 GA1200:00297002 01:47:23.7 +31:44:45 16.1 0.11 147 1.00 12.1%
216397 2019 Oct 22 11:56:34 281371 83 34 CENTAURR 0.08 GA1000:01539890 06:15:14.5 +11:18:06 14.8 0.11 114 1.00 51.6%
225344 2019 Nov 13 07:50:35 8405 91 37 CENTAURR 0.20 GA1300:02664517 05:20:15.2 +40:51:48 15.7 0.11 144 1.00 37.6%
222476 2019 Nov 13 10:20:44 03UV292 211 86 3:2E 0.59 GA1060:01244331 05:45:54.4 +17:43:38 15.8 0.11 144 1.00 10.1%
226690 2019 Nov 17 08:19:14 14WO510 244 100 3:2E 0.18 GA1120:00944429 05:04:52.8 +23:41:26 16.2 0.11 157 1.00 6.3%
225237 2019 Nov 17 08:26:50 54598 191 78 CENTAURR 0.08 GA1320:01656196 04:09:20.5 +43:35:33 15.9 0.11 154 1.00 18.5%
223589 2019 Nov 18 12:20:49 10VQ11 476 195 SCATEXTD 0.23 GA0980:00748219 05:22:57.3 +09:34:43 15.4 0.11 152 1.00 19.0%
225636 2019 Nov 21 11:54:56 98WY31 257 105 CLASSICAL 0.42 GA1140:02489559 06:44:41.5 +24:13:07 13.8 0.11 138 1.00 7.8%
222816 2019 Nov 24 09:27:26 04VK78 143 59 2:1E 0.27 GA1120:00757551 04:43:19.7 +22:23:23 14.7 0.11 169 1.00 8.7%
226342 2019 Nov 26 07:08:15 11UK413 318 130 SCATEXTD 0.56 GA1100:01247322 05:36:24.5 +21:27:57 16.5 0.11 159 1.00 15.8%
223158 2019 Nov 27 12:07:37 07TG422 342 140 CENTAURS 0.32 GA0980:00528712 04:48:42.0 +09:31:32 16.0 0.11 165 1.00 6.8%
228456 2019 Nov 28 04:31:10 504555 347 142 3:2E 0.22 GA0860:00211619 02:37:36.9 -02:04:24 13.2 0.11 147 1.00 24.6%
236534 2019 Dec 03 03:05:21 14UE228 120 49 ERR2LARGE 0.22 GA1040:00199772 02:05:27.4 +15:33:21 16.3 0.11 144 1.00 7.2%
232317 2019 Dec 04 03:55:37 10VR11 472 193 SCATEXTD 0.13 GA1080:00894750 05:14:39.2 +18:18:20 14.5 0.11 171 1.00 14.3%
229272 2019 Dec 11 05:37:03 03UV292 211 86 3:2E 0.59 GA1060:01202783 05:43:28.1 +17:39:52 15.4 0.11 171 1.00 4.8%
231759 2019 Dec 14 11:30:02 04VK78 143 59 2:1E 0.27 GA1120:00743071 04:41:17.5 +22:19:46 16.4 0.11 170 1.00 8.8%
234228 2019 Dec 18 07:42:26 463368 209 85 CENTAURR 0.15 GA1080:01429369 05:51:51.9 +19:09:19 9.5 0.11 175 1.00 16.5%
233100 2019 Dec 22 12:03:42 341275 115 47 CENTAURR 0.72 GA1360:03276701 05:31:12.4 +46:34:18 16.2 0.11 156 1.00 13.1%
266778 2019 Dec 25 06:19:06 14WM517 162 66 2:1E 0.17 GA0840:00193432 02:26:09.7 -04:44:40 16.7 0.05 118 1.00 4.7%
236103 2019 Dec 28 04:56:36 14UT114 105 43 CENTAURR 0.38 GA1260:01339325 04:39:30.6 +36:56:03 16.8 0.11 154 1.00 30.0%
231917 2019 Dec 31 04:40:46 06SF369 275 112 SCATNEAR 0.16 GA1000:00552187 04:52:30.2 +11:20:48 15.9 0.11 152 1.00 11.9%
232708 2020 Jan 02 02:58:42 15875 240 98 3:2E 0.29 GA1160:01598803 05:48:34.5 +27:51:02 16.6 0.11 166 1.00 40.8%
237751 2020 Jan 03 10:00:54 03UV292 211 86 3:2E 0.59 GA1060:01166351 05:41:14.7 +17:38:12 15.7 0.11 162 1.00 10.0%
241265 2020 Jan 15 09:50:18 449097 72 30 CENTAURR 0.20 GA1260:03019228 06:59:27.2 +37:05:53 7.9 0.11 161 1.00 50.3%
245704 2020 Jan 23 06:16:03 11BV163 282 115 CLASSICAL 0.38 GA1080:03208975 09:21:20.7 +18:00:05 15.8 0.11 165 1.00 5.9%
243371 2020 Jan 31 08:45:10 03UT292 252 103 3:2E 0.36 GA0960:01020847 05:53:22.7 +07:54:12 14.9 0.11 135 1.00 4.3%
255556 2020 Apr 12 04:59:32 14YY49 58 24 CENTAURR 0.19 UC4-463-030506 07:14:10.7 +02:24:56 13.5 0.15 87 1.00 19.1%
256187 2020 Apr 16 10:06:07 14HT199 214 87 3:2E 0.21 GA0720:05753586 15:54:21.7 -16:22:45 15.4 0.11 147 1.00 3.7%
257728 2020 Apr 24 07:15:26 14HX199 239 98 3:2E 0.14 GA0800:05013909 16:06:08.9 -08:59:57 15.5 0.20 151 1.00 8.8%
262524 2020 May 27 08:21:08 307261 1148 469 SCATEXTD 0.13 GA0820:15065701 18:52:29.8 -06:12:06 16.8 0.22 140 1.00 9.3%

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