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 2017/04/27 16:01:46 UT

Idx ET Desig Diam(5%) Diam(30%) DES Classification TNO pos err StarID RA Dec mag minsep selong RECON Prob
141625 2017 Apr 16 07:33:33 14WZ508 159 65 CENTAURR 0.28 UC4-473-046251 10:52:09.8 +04:30:15 15.1 0.21 136 1.00 8.0%
73969 2017 Apr 21 08:04:00 434194 209 85 CLASSICAL 0.19 UC4-447-053664 12:29:01.6 -00:40:17 15.9 0.23 156 1.00 8.5%
54689 2017 Apr 24 05:21:04 02FW36 268 109 CLASSICAL 0.31 UC4-474-047230 11:37:19.1 +04:47:12 11.7 0.09 139 1.00 4.6%
117448 2017 Jun 14 09:16:13 11HZ102 86 35 CLASSICAL 0.35 UC4-347-167101 19:03:33.4 -20:44:23 15.5 0.15 158 1.00 13.2%
135602 2017 Jul 04 08:09:59 14GV53 322 132 SCATNEAR 0.43 UC4-433-066391 16:28:27.8 -03:31:32 14.5 0.02 140 1.00 8.0%
117474 2017 Jul 26 06:39:47 11HZ102 86 35 CLASSICAL 0.35 UC4-346-170487 19:00:11.0 -20:49:38 14.6 0.15 161 1.00 13.2%
97622 2017 Jul 30 06:00:54 01KO77 185 75 SCATEXTD 0.24 UC4-370-093108 17:33:22.6 -16:06:41 13.8 0.28 136 1.00 10.4%
138741 2017 Aug 13 08:23:08 14LN28 134 55 CENTAURR 0.67 UC4-410-139206 21:09:02.9 -08:02:37 12.0 0.03 171 1.00 7.8%
79075 2017 Aug 20 08:52:35 07NC7 137 56 CENTAURR 0.26 UC4-434-118238 23:05:33.4 -03:13:53 14.8 0.07 161 1.00 10.0%
85988 2017 Oct 07 07:27:19 8405 91 37 CENTAURR 0.19 UC4-649-024024 04:59:00.9 +39:42:15 16.1 0.16 115 1.00 12.2%
84861 2017 Oct 26 09:12:58 13WV107 57 23 CENTAURR 0.14 UC4-543-040693 07:15:53.9 +18:28:30 16.1 0.10 105 1.00 69.4%
151419 2017 Oct 27 11:50:52 02VT130 417 170 CLASSICAL 0.12 UC4-571-016081 05:15:46.2 +24:11:53 16.4 0.02 134 1.00 33.3%
91773 2017 Nov 12 04:28:53 385571 105 43 1:1 0.60 UC4-514-003225 02:05:03.6 +12:39:40 15.8 0.08 164 1.00 6.3%
88748 2017 Nov 14 09:47:42 01VN71 102 42 3:2E 0.39 UC4-608-033876 06:31:22.3 +31:33:55 15.5 0.29 135 1.00 5.6%
91011 2017 Nov 14 10:15:54 15875 240 98 3:2E 1.05 UC4-591-019461 05:31:14.6 +28:02:25 14.7 0.10 148 1.00 10.1%
108640 2017 Nov 14 11:56:32 06QJ181 331 135 3:1EE+3:1II 0.26 UC4-540-017875 05:40:05.8 +17:59:43 16.0 0.05 146 1.00 12.1%
170072 2017 Nov 19 09:04:03 119315 72 30 CENTAURR 0.35 UC4-655-045390 06:46:44.1 +40:58:21 11.2 0.10 135 1.00 18.3%
88493 2017 Nov 20 10:34:54 00SR331 106 43 5:2EEE 0.37 UC4-543-035960 06:53:10.4 +18:30:44 15.1 0.25 135 1.00 10.7%
106514 2017 Nov 20 10:47:23 98WS31 134 55 3:2E 0.32 UC4-597-017239 05:17:04.5 +29:19:44 12.6 0.11 157 1.00 7.7%
92040 2017 Nov 25 05:29:57 69990 132 54 3:2E 1.66 UC4-551-018644 05:46:53.3 +20:06:36 16.4 0.10 156 1.00 13.1%
92176 2017 Nov 26 06:45:54 96TK66 348 142 CLASSICAL 0.20 UC4-506-002854 01:55:45.7 +11:01:53 15.2 0.04 147 1.00 10.1%
89566 2017 Nov 29 10:00:15 05UN524 84 34 CENTAURR 0.57 UC4-645-039757 06:41:49.4 +38:59:15 15.7 0.27 145 1.00 7.5%
125105 2017 Dec 01 07:14:48 450265 331 135 3:2E 0.11 UC4-586-035913 06:55:41.7 +27:06:31 14.9 0.21 146 1.00 12.1%
89569 2017 Dec 03 05:01:56 05UN524 84 34 CENTAURR 0.57 UC4-646-040137 06:41:08.7 +39:02:00 16.0 0.26 149 1.00 9.7%
94855 2017 Dec 08 07:06:04 248835 76 31 CENTAURR 0.76 UC4-675-021968 03:41:46.2 +44:55:28 15.3 0.08 153 1.00 11.6%
104254 2017 Dec 09 05:24:15 456826 182 74 3:2E 0.18 UC4-521-011992 05:20:26.7 +14:11:51 14.9 0.24 171 1.00 18.1%
95650 2017 Dec 10 08:00:29 48639 603 246 SCATNEAR 0.14 UC4-542-006071 03:16:46.1 +18:17:27 15.5 0.06 153 1.00 10.4%
94638 2017 Dec 11 03:46:20 149349 263 107 5:3EE 0.17 UC4-536-005733 03:14:31.4 +17:05:47 15.4 0.24 152 1.00 10.8%
94685 2017 Dec 11 08:02:07 15875 240 98 3:2E 1.05 UC4-591-018990 05:28:00.4 +28:00:52 16.3 0.11 174 1.00 38.6%
95741 2017 Dec 13 04:55:46 69986 159 65 3:2E 0.81 UC4-527-017458 05:51:15.5 +15:21:27 15.3 0.08 170 1.00 11.0%
94686 2017 Dec 13 11:59:40 15875 240 98 3:2E 1.05 UC4-591-018936 05:27:43.7 +28:00:37 15.8 0.07 175 1.00 26.7%
95743 2017 Dec 18 09:33:22 69986 159 65 3:2E 0.81 UC4-527-017314 05:50:43.7 +15:20:55 14.8 0.16 172 1.00 11.6%
141245 2017 Dec 21 07:35:43 14WP509 649 265 CLASSICAL 0.22 UC4-589-035602 06:49:11.8 +27:45:24 15.9 0.25 168 1.00 6.4%
92835 2017 Dec 26 08:56:57 00SR331 106 43 5:2EEE 0.37 UC4-543-035088 06:49:52.4 +18:32:39 16.1 0.12 172 1.00 19.3%
95962 2017 Dec 27 08:00:55 98WG24 295 121 CLASSICAL 0.38 UC4-567-034942 07:00:47.6 +23:18:47 15.3 0.02 172 1.00 17.3%
93425 2017 Dec 30 08:43:37 05UN524 84 34 CENTAURR 0.57 UC4-647-039174 06:35:29.3 +39:15:33 15.5 0.19 164 1.00 13.4%
95372 2018 Jan 02 12:21:33 33340 302 123 3:2E 0.24 UC4-558-035961 06:54:08.5 +21:30:03 16.2 0.09 178 1.00 15.9%
97975 2018 Jan 10 05:51:01 03TK58 209 85 CLASSICAL 0.30 UC4-574-020193 05:51:48.0 +24:39:47 15.5 0.05 158 1.00 8.3%
99420 2018 Jan 11 04:07:26 118228 251 103 3:2E 0.34 UC4-614-011190 03:54:44.1 +32:46:13 15.9 0.20 132 1.00 6.8%
101969 2018 Jan 12 05:46:29 98UR43 129 53 3:2E 0.40 UC4-585-014920 05:09:46.5 +26:54:47 15.9 0.27 147 1.00 5.6%
99484 2018 Jan 16 06:05:30 119979 631 258 2:1E 0.52 UC4-549-018299 05:43:11.8 +19:41:22 16.5 0.17 150 1.00 4.6%
96943 2018 Jan 23 09:11:21 00YB2 218 89 CLASSICAL 0.25 UC4-551-014219 05:23:04.3 +20:02:10 13.5 0.10 138 1.00 5.0%
101216 2018 Jan 28 11:40:13 52975 79 32 CENTAURR 1.07 UC4-615-041901 07:39:51.3 +32:58:43 12.2 0.29 160 1.00 5.6%
104785 2018 Feb 04 04:16:41 11MM4 81 33 CENTAURR 0.60 UC4-831-013975 13:57:15.4 +76:07:19 12.9 0.30 110 1.00 7.9%
103773 2018 Feb 05 08:33:16 00CQ114 286 117 CLASSICAL 0.19 UC4-465-047458 11:51:54.4 +02:52:48 12.5 0.21 139 1.00 3.1%
105506 2018 Feb 23 03:08:49 248835 76 31 CENTAURR 0.76 UC4-662-017498 03:35:43.7 +42:19:40 15.4 0.23 88 1.00 6.9%
104973 2018 Feb 27 08:56:14 131697 138 56 5:4E 0.33 UC4-531-048534 09:16:25.9 +16:09:53 14.7 0.03 158 1.00 9.0%
109882 2018 Mar 12 05:17:15 248835 76 31 CENTAURR 0.76 UC4-660-017724 03:38:55.6 +41:54:20 14.6 0.24 73 1.00 3.6%
107553 2018 Mar 27 10:01:17 00FX53 149 61 SCATNEAR 0.29 UC4-409-056573 13:46:56.6 -08:18:46 15.8 0.11 159 1.00 4.3%
123214 2018 Apr 22 09:44:29 03HF57 114 47 3:2E 0.41 UC4-362-069083 15:09:16.3 -17:42:27 15.5 0.10 162 1.00 3.7%
124035 2018 May 10 09:34:01 04KV18 96 39 CENTAURR 0.30 UC4-367-097218 17:39:03.5 -16:38:44 16.4 0.17 144 1.00 8.4%
129969 2018 May 20 06:58:14 468861 145 59 CENTAURR 0.27 UC4-642-051089 15:21:31.9 +38:12:46 16.0 0.28 122 1.00 15.0%
118663 2018 May 30 08:22:23 307261 1097 448 SCATEXTD 0.37 UC4-417-087977 18:43:48.7 -06:38:35 15.7 0.21 144 1.00 7.2%
135574 2018 Jun 08 08:45:03 14GU53 413 169 SCATEXTD 0.44 UC4-455-060182 16:05:49.6 +00:55:18 16.1 0.17 152 1.00 7.3%
129084 2018 Jun 14 08:49:38 98HQ151 106 43 3:2E 0.81 UC4-381-118023 18:34:18.3 -13:49:34 15.2 0.13 162 1.00 5.4%
136227 2018 Jul 09 07:18:23 14JJ80 413 169 CENTAURS 0.16 UC4-467-130010 21:28:54.0 +03:15:46 16.3 0.11 138 1.00 5.4%
132477 2018 Jul 27 06:01:35 98HQ151 106 43 3:2E 0.81 UC4-381-110886 18:30:00.4 -13:52:18 14.4 0.14 152 1.00 3.1%
132478 2018 Jul 27 07:56:28 98HQ151 106 43 3:2E 0.81 UC4-381-110875 18:30:00.0 -13:52:19 16.0 0.04 152 1.00 6.5%
150294 2018 Aug 21 09:31:50 14JJ80 413 169 CENTAURS 0.16 UC4-466-132165 21:25:00.0 +03:05:13 14.9 0.28 162 1.00 3.9%
149011 2018 Sep 01 09:41:54 363330 417 170 CLASSICAL 0.12 UC4-393-132709 21:55:27.7 -11:34:17 14.9 0.02 168 1.00 13.4%
153164 2018 Sep 12 11:25:44 10TH 88 36 CENTAURR 0.08 UC4-471-011981 05:33:36.8 +04:01:44 16.0 0.12 87 1.00 35.1%
156261 2018 Oct 18 05:47:39 8405 91 37 CENTAURR 0.19 UC4-652-028542 05:11:14.7 +40:17:39 15.5 0.13 123 1.00 22.6%
155121 2018 Oct 18 07:11:10 248835 76 31 CENTAURR 0.76 UC4-667-025977 04:31:16.8 +43:16:25 13.9 0.17 128 1.00 14.2%
155122 2018 Oct 20 07:45:15 248835 76 31 CENTAURR 0.76 UC4-667-025918 04:30:55.4 +43:16:45 16.3 0.22 130 1.00 13.6%
151346 2018 Oct 25 06:14:37 02QX47 108 44 CENTAURR 0.28 UC4-537-002803 01:34:06.0 +17:21:05 14.3 0.05 172 1.00 10.3%
170153 2018 Oct 28 11:30:47 119315 72 30 CENTAURR 0.35 UC4-652-044694 07:09:40.1 +40:18:38 15.7 0.29 110 1.00 7.2%
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 0.15 148 1.00 10.4%
166798 2018 Nov 30 07:43:03 84719 550 224 3:2E+6:4II 0.10 UC4-589-008717 03:33:26.4 +27:45:44 15.8 0.02 167 1.00 19.4%
166728 2018 Dec 01 06:44:31 69986 159 65 3:2E 0.81 UC4-526-020426 06:00:06.5 +15:01:37 15.2 0.16 157 1.00 10.9%
172004 2018 Dec 09 06:18:01 78799 479 195 CENTAURR 1.03 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 0.41 UC4-691-031494 04:53:49.9 +48:09:55 16.0 0.23 154 1.00 17.7%
171056 2018 Dec 15 11:57:06 248835 76 31 CENTAURR 0.76 UC4-664-023517 04:16:46.9 +42:38:38 15.7 0.30 155 1.00 7.5%
173555 2018 Dec 20 12:04:21 14YX49 107 44 CENTAURR 0.22 UC4-617-044708 08:49:48.6 +33:19:25 16.0 0.12 140 1.00 9.3%
168615 2018 Dec 22 08:24:21 01VN71 102 42 3:2E 0.39 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 0.05 162 1.00 11.1%
170653 2018 Dec 24 02:23:19 145451 759 310 SCATNEAR 0.04 UC4-534-010144 04:52:51.2 +16:45:24 13.5 0.09 161 1.00 28.8%
170315 2018 Dec 27 04:19:56 120347 1000 408 SCATEXTD 0.20 UC4-561-142104 23:24:24.9 +22:06:10 16.0 0.10 86 1.00 7.1%
168625 2019 Jan 03 08:08:33 01XR254 417 170 CLASSICAL 0.21 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 0.81 UC4-525-019203 05:56:30.4 +14:58:56 15.7 0.12 162 1.00 5.8%
179173 2019 Jan 28 05:11:20 14YY49 58 24 CENTAURR 0.12 UC4-458-028181 06:59:55.5 +01:25:26 14.6 0.27 150 1.00 38.5%
178060 2019 Jan 30 06:49:11 69990 132 54 3:2E 1.66 UC4-550-019478 05:48:21.3 +19:55:24 16.5 0.08 137 1.00 8.9%
179444 2019 Feb 04 02:45:09 472262 288 118 SCATNEAR 0.10 UC4-427-003442 02:49:02.1 -04:44:46 15.9 0.02 84 1.00 20.0%
181314 2019 Feb 11 08:12:43 309139 66 27 CENTAURR 0.69 UC4-368-051125 08:43:56.9 -16:27:30 15.1 0.07 147 1.00 3.6%
180694 2019 Feb 19 03:35:05 119315 72 30 CENTAURR 0.35 UC4-655-045769 06:50:19.1 +40:59:30 16.3 0.17 128 1.00 13.8%
183955 2019 Mar 09 09:28:06 136472 6919 2825 SCATEXTD 0.03 UC4-572-049881 13:06:10.9 +24:12:23 14.7 0.04 147 1.00 11.9%
183867 2019 Mar 15 07:39:17 126154 479 195 5:3EE 0.10 UC4-557-046794 09:18:30.4 +21:14:37 13.5 0.04 141 1.00 16.6%
186073 2019 Mar 17 08:38:59 487581 479 195 SCATNEAR 0.13 UC4-506-052869 11:19:39.0 +11:07:35 13.7 0.23 168 1.00 6.2%

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