Orbit determination status

This table lists a subset of all those objects the Minor Planet Center has classified as a Centaur or Trans-Neptunian. These objects are relatively secure in their orbit determination at the present time. All of these objects have been observed recently. For this table, recent means the that time since the last observation is less than 20% of the total orbital arc length observed to date. For example, an object with a 2 month arc that was last observed one month ago would have a need ratio of 0.5 and thus would not appear on this list. If an object had a 2 month arc and was observed one day ago, the need ratio would be 0.02 and would appear on the list. Of course, such an object would fall off this list in a matter of weeks. This information is intended to point out those objects most in need of astrometric measurements to prevent their being lost or to further improve their orbits. Anyone making measurements of these objects should send their observations directly to the Minor Planet Center.

152 objects in this table. Positions computed for UTC 2012/02/13 00:00:00

Desig need err a e i Hv r d R RA Dec Sel Reference
03QY111 0.2 0.3 43.5 0.039 2.9 6.31 42.3 43.0 23.1 00:27:22.8 -00:11:53 43 Bernst
29981 0.2 0.2 99.4 0.876 6.0 8.30 22.6 22.1 22.4 05:34:01.3 +17:16:12 121 O18152
05UN524 0.2 3.3 21.6 0.134 17.8 8.88 18.9 18.6 22.3 04:11:37.1 +30:34:19 103 Bernst
03QB91 0.2 0.3 39.4 0.190 6.5 5.70 45.6 46.3 22.8 00:38:20.8 -01:23:16 45 Bernst
05RO43 0.2 0.1 29.0 0.520 35.4 6.87 24.6 24.7 21.4 03:35:04.3 -03:28:26 88 Bernst
03QX111 0.2 0.3 39.5 0.131 9.5 6.19 40.4 41.1 22.8 00:31:27.5 -01:44:15 44 Bernst
05EF298 0.2 0.1 44.0 0.088 2.9 5.64 40.7 39.7 22.1 10:49:02.5 +09:37:49 163 Bernst
02XV93 0.2 0.2 39.5 0.123 13.3 4.52 39.5 39.0 21.0 05:24:34.9 +35:25:00 119 Bernst
00CN105 0.2 0.3 44.5 0.100 3.4 4.49 46.7 45.8 21.6 11:01:03.1 +09:01:38 160 Bernst
78799 0.2 0.6 37.7 0.246 14.3 5.10 44.9 44.4 22.1 05:27:04.0 +32:08:19 119 O15728
04XR190 0.2 0.3 57.7 0.106 46.5 4.03 57.8 57.4 22.1 04:54:11.9 +19:20:20 111 Bernst
136204 0.2 0.2 20.3 0.262 11.2 8.20 15.0 14.5 20.6 04:59:36.1 +33:56:24 114 O18665
04TF282 0.2 0.3 81.8 0.519 23.1 5.51 40.0 39.9 22.1 03:59:37.5 +17:10:35 98 Bernst
02QX47 0.2 0.1 25.5 0.373 7.3 8.42 21.5 22.2 22.4 00:07:54.3 +08:31:11 43 Bernst
307982 0.2 0.1 90.7 0.598 16.3 4.50 37.1 38.0 20.7 21:25:18.4 +01:31:00 16 O21240
307616 0.2 0.2 44.0 0.078 10.3 5.00 43.9 44.5 22.0 00:32:50.6 +01:52:17 45 O21228
06BR284 0.2 0.3 43.9 0.042 1.2 6.47 42.1 41.2 23.1 09:01:34.8 +18:01:34 169 Bernst
55638 0.2 0.1 39.6 0.294 16.3 5.20 28.7 28.4 20.4 04:48:51.3 +08:50:15 108 O18655
38084 0.2 0.8 55.3 0.411 13.2 7.00 32.9 32.7 22.7 14:35:36.4 -04:29:15 105 O17664
307463 0.2 0.2 39.3 0.207 1.4 5.70 41.3 41.0 22.4 04:35:40.2 +22:24:35 108 O21223
07JH43 0.2 0.1 39.3 0.032 18.2 4.23 40.6 40.7 20.9 16:00:47.6 -19:18:03 81 Bernst
03YQ179 0.2 0.2 89.0 0.581 20.9 6.81 37.7 36.8 23.0 08:28:42.2 +24:41:52 160 Bernst
05EX297 0.2 0.4 44.0 0.110 4.8 5.71 44.6 43.7 22.6 10:33:03.9 +13:22:27 167 Bernst
01QR297 0.2 0.3 44.5 0.029 5.1 5.88 43.4 44.4 22.7 22:33:45.8 -09:52:09 13 Bernst
06HJ123 0.2 0.1 39.3 0.302 12.5 5.17 36.1 36.1 21.3 15:31:57.7 -16:41:47 88 Bernst
15789 0.2 0.6 39.8 0.187 5.2 6.60 37.0 37.3 22.9 01:47:35.7 +14:22:44 67 O16408
01QA298 0.1 0.4 46.3 0.190 23.7 6.28 37.7 38.7 22.5 22:12:10.0 -23:47:17 12 Bernst
139775 0.1 0.1 39.6 0.198 6.5 6.80 31.8 32.4 22.4 00:52:30.2 +01:59:14 50 O20016
143707 0.1 0.2 56.2 0.422 7.5 5.70 32.9 33.2 21.5 01:55:34.8 +17:58:57 70 O17670
145480 0.1 0.1 76.2 0.394 26.4 4.30 46.3 47.2 21.5 23:00:06.5 +00:39:24 24 O20233
01QX322 0.1 0.2 58.6 0.391 28.5 5.33 41.7 42.1 22.1 00:52:00.7 +29:48:24 63 Bernst
07TK422 0.1 1910.5 21.2 0.191 3.1 8.14 22.2 22.7 22.3 01:12:32.5 +05:25:09 56 Bernst
00QE226 0.1 0.3 44.2 0.082 1.2 5.66 45.7 46.6 22.8 23:27:34.1 -04:30:49 28 Bernst
00QC226 0.1 0.3 44.3 0.054 2.7 6.15 42.5 43.3 23.0 23:36:31.5 -05:15:38 30 Bernst
175113 0.1 0.2 39.1 0.064 13.4 3.80 41.5 42.4 20.5 22:27:24.1 -22:30:57 14 O18675
02PP149 0.1 0.3 41.1 0.090 34.7 6.48 39.3 40.1 23.0 23:33:35.9 -10:39:49 28 Bernst
127546 0.1 0.4 66.8 0.686 77.9 7.60 21.3 20.8 21.5 07:10:05.6 +67:21:23 121 O19880
06JZ81 0.1 0.3 44.5 0.077 3.6 6.39 41.1 40.9 23.1 14:44:05.0 -16:15:54 99 Bernst
26181 0.1 0.4 92.4 0.586 13.4 4.80 41.9 41.9 21.6 15:24:44.0 -10:27:39 92 O18651
01RZ143 0.1 0.3 44.3 0.070 2.1 5.61 41.3 41.6 22.3 01:56:40.4 +12:51:56 69 Bernst
03WU188 0.1 0.3 44.3 0.043 3.8 5.29 43.3 42.6 22.1 06:49:20.2 +24:09:04 138 Bernst
10XZ78 0.1 0.5 7.6 0.296 39.2 12.12 5.4 4.7 20.1 06:39:28.9 -07:15:11 130 Bernst
309139 0.1 0.2 15.9 0.378 31.6 9.40 14.1 13.5 21.5 06:21:12.0 -01:24:48 128 O21272
120216 0.1 0.3 39.2 0.313 29.3 6.30 27.3 26.9 21.2 14:00:28.5 -15:47:13 110 O18156
120181 0.1 0.1 32.6 0.178 2.7 6.90 26.8 27.1 21.8 02:01:35.1 +09:44:17 69 O20232
137295 0.1 0.1 48.0 0.298 12.7 6.90 33.7 34.2 22.8 01:13:36.7 +02:20:21 55 O19019
10NV1 0.1 0.1 292.1 0.968 140.8 10.08 9.7 10.6 20.8 22:10:19.7 +05:01:53 20 Bernst
281371 0.1 0.3 14.8 0.312 27.1 8.70 10.4 11.1 19.8 23:24:30.0 +20:52:49 43 O19949
10BK118 0.1 0.1 442.3 0.986 143.9 9.71 6.1 6.9 18.7 23:43:24.5 +02:48:11 34 Bernst
309239 0.1 0.2 30.4 0.300 36.1 6.10 27.8 28.5 21.2 00:52:28.6 +00:25:50 49 O21275
90377 0.1 0.3 541.3 0.859 11.9 1.20 87.0 87.0 21.1 03:30:18.5 +06:42:33 89 O18659
10370 0.1 0.6 25.0 0.245 4.1 8.20 22.0 22.4 22.3 17:19:12.0 -19:05:49 63 O18649
02GV31 0.1 0.1 43.9 0.089 2.2 5.46 40.2 39.3 21.9 11:23:27.7 +06:13:34 154 Bernst
126154 0.1 0.3 42.5 0.144 11.1 5.10 36.7 35.7 21.2 08:28:30.7 +22:16:09 161 O19387
145453 0.1 0.1 43.5 0.143 28.5 3.60 38.9 38.9 20.1 03:51:22.3 +05:44:37 94 O18668
47171 0.1 0.3 39.7 0.231 8.4 4.50 30.6 31.1 20.0 01:37:00.6 +01:36:48 60 O18654
305543 0.1 0.2 62.5 0.411 25.1 4.80 37.6 38.4 21.1 00:13:31.2 -18:49:40 37 O20937
182934 0.1 0.3 44.1 0.109 11.6 5.00 43.8 43.7 22.0 15:11:25.9 -20:58:48 92 O18677
02GH32 0.1 0.2 41.9 0.091 26.7 4.97 43.4 43.3 21.9 15:02:44.8 -14:24:03 96 Bernst
278361 0.1 0.1 47.8 0.157 12.1 3.30 41.5 41.7 20.0 16:08:15.4 -26:53:32 78 O19764
07JF43 0.1 0.1 39.2 0.184 15.1 4.81 38.6 38.6 21.2 15:44:06.6 -12:28:07 86 Bernst
308193 0.1 0.6 43.3 0.140 28.6 4.30 39.7 38.7 20.7 09:54:12.1 +28:29:01 165 O21247
10RM64 0.1 0.2 19.7 0.688 27.0 10.66 6.3 6.8 19.8 01:40:29.3 -16:27:26 57 Bernst
10EK139 0.1 0.1 68.9 0.529 29.5 3.36 38.6 38.3 19.8 13:22:02.8 -31:54:11 110 Bernst
150642 0.1 0.6 45.2 0.118 10.2 5.40 40.6 39.6 21.8 10:07:38.4 +13:59:58 174 O19388
99CL119 0.1 0.2 46.9 0.006 23.3 5.48 46.7 45.7 22.5 09:38:23.4 +20:55:47 173 Bernst
5145 0.1 0.2 20.3 0.573 24.7 6.70 24.5 24.9 21.3 17:19:37.6 -06:15:33 65 O16957
09HW77 0.1 21655.3 21.4 0.418 17.9 9.30 13.7 13.8 21.5 15:53:22.0 -22:21:27 82 Bernst
148975 0.1 0.3 28.9 0.677 12.6 10.80 9.7 9.6 21.5 15:18:53.4 -06:30:01 94 O19881
03UZ413 0.1 ******* 39.4 0.220 12.0 3.97 42.8 42.9 20.8 03:06:29.4 +04:59:57 83 Bernst
120132 0.1 0.2 49.2 0.249 11.8 4.50 39.0 38.4 20.9 12:57:10.2 -13:42:16 124 O18663
229762 0.1 0.1 74.3 0.493 23.4 3.00 44.4 44.3 20.0 04:08:33.8 -01:36:10 96 O18683
133067 0.1 0.2 39.4 0.256 8.9 6.40 34.3 34.2 22.3 15:06:32.5 -14:44:11 95 O20233
144897 0.1 0.2 39.2 0.041 9.5 4.10 39.0 39.4 20.6 02:11:07.3 +04:04:32 69 O15731
10ET65 0.1 0.1 62.0 0.361 30.7 4.67 39.6 38.9 21.1 12:04:13.3 -05:18:19 140 Bernst
03GH55 0.1 0.3 44.0 0.076 1.1 5.40 40.9 40.7 22.1 14:54:18.8 -15:32:27 97 Bernst
32532 0.1 0.2 10.7 0.196 20.3 8.60 12.3 11.9 20.2 04:58:41.8 +05:30:19 110 O12126
26308 0.1 0.2 48.0 0.373 13.5 5.40 38.6 38.9 21.8 02:07:50.2 +05:42:54 69 O18152
03FE128 0.1 0.3 47.7 0.249 3.4 5.77 35.9 35.8 21.9 15:07:35.9 -14:34:58 95 Bernst
11FX62 0.1 0.2 47.8 0.574 18.3 6.91 21.6 21.0 20.8 12:25:59.0 -23:16:34 125 Bernst
208996 0.1 0.1 39.5 0.176 13.5 3.20 45.2 44.3 20.2 07:45:17.4 +11:14:53 152 O15288
120061 0.1 0.2 20.7 0.472 19.8 8.50 12.9 13.3 20.4 17:07:09.6 -21:12:45 65 O19880
168703 0.1 0.2 39.7 0.072 4.9 6.20 36.9 36.8 22.4 14:57:07.7 -18:48:23 96 O12696
55637 0.1 0.2 43.0 0.144 19.4 3.30 41.4 41.7 20.0 02:12:46.1 +09:21:39 71 O18655
09YF7 0.1 0.2 12.0 0.458 31.0 10.29 11.3 10.9 21.6 04:57:49.1 +11:33:36 111 Bernst
309741 0.1 0.3 27.5 0.616 35.8 10.30 10.6 10.2 21.3 05:21:47.0 +05:45:10 116 O21288
09YD7 0.1 0.2 128.6 0.896 30.8 9.48 13.7 13.4 21.6 05:02:53.6 -01:44:55 109 Bernst
79360 0.1 0.1 43.9 0.011 2.2 4.90 43.5 42.5 21.7 09:00:20.7 +16:39:42 170 O18658
09QV38 0.1 0.1 10.9 0.448 19.9 11.34 6.8 6.5 20.6 04:06:59.1 +40:11:11 104 Bernst
04NT33 0.1 17748.9 43.5 0.151 31.2 4.40 38.4 39.3 20.8 21:03:58.6 +14:58:41 30 Bernst
174567 0.1 0.2 45.6 0.145 21.5 3.00 47.5 47.8 20.3 16:59:05.7 -02:35:13 71 O18674
52872 0.1 0.1 8.3 0.306 15.7 10.50 7.8 8.1 20.4 16:53:36.6 -07:59:14 71 O19879
07XV50 0.1 0.3 46.2 0.066 22.8 4.53 46.4 46.2 21.7 04:20:36.5 +28:07:04 105 Bernst
303712 0.0 0.2 44.3 0.105 1.3 5.70 41.2 42.1 22.4 23:01:47.4 -06:04:41 21 O20890
95626 0.0 0.3 23.0 0.217 15.0 6.60 18.7 18.6 20.0 15:19:02.7 -04:26:59 94 O18660
10HE79 0.0 0.1 38.8 0.179 15.8 4.79 35.9 36.0 20.9 15:35:54.4 -20:24:01 87 Bernst
120347 0.0 0.1 42.2 0.103 23.9 3.80 44.3 45.1 20.8 22:57:49.4 +18:00:34 37 O18663
10TY53 0.0 0.1 39.2 0.460 22.5 4.88 33.0 33.5 20.7 01:26:45.3 -14:37:20 54 Bernst
10RO64 0.0 0.1 47.1 0.127 17.0 4.75 41.2 41.8 21.5 00:58:51.7 -07:41:39 49 Bernst
307261 0.0 0.2 41.7 0.148 17.7 3.30 47.1 47.7 20.6 18:18:47.1 -08:27:28 50 O21217
42355 0.0 0.2 37.7 0.536 2.4 7.10 18.6 17.9 20.3 12:23:23.8 -03:07:45 136 O18653
38628 0.0 0.4 39.3 0.273 15.5 4.50 28.6 28.5 19.7 15:25:40.1 -04:54:31 93 O18652
07RH283 0.0 ******* 16.0 0.337 21.3 8.06 19.3 19.5 21.6 01:48:09.1 +32:03:43 75 Bernst
310071 0.0 0.3 29.9 0.566 19.7 7.10 13.2 12.4 18.9 12:19:08.1 +16:06:57 142 O21296
160427 0.0 0.1 24.6 0.045 12.3 7.90 24.0 24.3 22.4 02:25:52.3 +03:53:40 73 O21119
308379 0.0 0.0 48.1 0.201 10.0 4.90 42.6 43.1 21.8 01:18:11.6 +03:33:07 56 O21252
84522 0.0 0.3 55.7 0.297 35.0 3.50 46.0 46.3 20.7 02:02:36.8 +22:23:43 73 O21088
250112 0.0 0.1 12.6 0.316 19.5 9.10 9.2 9.6 19.7 01:10:35.6 +19:38:10 61 O21149
145451 0.0 0.1 92.3 0.620 28.7 4.00 35.6 35.5 20.1 04:01:33.6 +08:14:38 97 O20233
65489 0.0 0.2 100.1 0.823 22.3 5.90 33.0 32.8 21.7 15:00:33.4 +00:52:42 100 O11270
07RG283 0.0 0.2 20.0 0.235 28.8 8.28 17.3 17.6 21.4 01:03:55.7 +37:16:33 70 Bernst
119951 0.0 0.1 38.7 0.046 0.4 4.00 39.3 39.6 20.5 16:36:09.4 -22:17:14 72 O13174
07VH305 0.0 0.1 24.6 0.668 6.2 11.12 8.7 8.2 21.3 05:21:16.8 +16:39:18 117 Bernst
08QD4 0.0 0.2 8.4 0.355 42.0 10.88 5.9 5.3 19.4 06:56:00.2 +65:24:44 121 O21174
28978 0.0 0.1 39.4 0.246 19.7 2.90 41.0 41.4 19.6 17:12:04.6 -25:25:21 64 O18652
03UT292 0.0 0.2 39.6 0.299 17.5 6.53 29.0 28.8 21.8 04:25:35.6 +10:35:17 103 Bernst
248835 0.0 0.2 22.3 0.463 36.3 9.10 12.1 12.7 20.8 23:14:44.5 +32:56:38 52 O21779
10199 0.0 0.2 15.7 0.170 23.4 6.20 14.2 14.5 18.5 16:29:00.9 -40:35:24 72 O18649
04VC131 0.0 0.3 44.3 0.080 0.5 5.75 40.7 40.8 22.4 03:05:26.4 +16:55:43 86 Bernst
120178 0.0 0.2 43.3 0.105 27.1 3.20 41.7 42.6 19.9 21:53:10.9 +02:43:08 17 O18663
08YB3 0.0 0.1 11.7 0.443 105.0 9.01 6.7 5.8 17.8 07:19:08.9 +16:37:33 146 Bernst
8405 0.0 0.1 18.1 0.620 17.6 8.70 16.1 16.1 21.5 02:59:29.5 +31:03:44 88 O21040
02XH91 0.0 0.2 44.1 0.085 5.0 5.12 47.5 46.6 22.3 07:25:06.2 +24:31:49 146 Bernst
90568 0.0 0.2 41.8 0.074 22.0 3.60 39.2 39.0 20.1 14:21:09.3 -26:19:48 101 O20231
03WU172 0.0 0.1 39.4 0.260 4.1 6.31 29.7 29.2 21.6 05:37:54.3 +27:26:50 122 Bernst
08CT190 0.0 0.1 52.7 0.342 38.8 5.27 34.7 33.8 21.1 10:35:34.9 +39:53:50 151 Bernst
50000 0.0 0.0 43.2 0.038 8.0 2.20 43.1 43.6 19.1 17:34:05.0 -15:42:45 60 O18654
01RX143 0.0 0.3 39.5 0.294 19.2 5.71 43.3 43.8 22.6 01:28:13.1 +11:08:28 61 Bernst
136472 0.0 0.1 45.4 0.163 29.0 -0.80 52.3 51.5 16.8 12:44:04.8 +27:15:15 136 O18665
03UZ117 0.0 0.1 44.5 0.137 27.4 5.03 39.1 39.1 21.5 03:36:20.3 +04:30:08 90 Bernst
225088 0.0 0.1 67.0 0.501 30.8 1.60 86.5 87.5 21.4 22:18:20.3 -13:54:10 9 O21143
60558 0.0 0.1 10.7 0.457 4.3 9.00 7.8 8.3 19.0 17:30:19.1 -19:10:42 60 O19879
136108 0.0 0.0 43.0 0.198 28.2 -0.20 50.9 50.4 17.4 13:53:55.8 +18:11:09 119 O10300
98WW31 0.0 0.2 44.9 0.083 6.8 5.76 47.4 47.2 23.0 04:17:44.5 +20:07:53 103 Bernst
98WY24 0.0 0.2 43.4 0.044 1.9 6.28 41.6 41.0 23.0 06:10:45.6 +23:06:34 129 Bernst
230965 0.0 0.2 47.4 0.252 38.1 3.60 35.7 35.1 19.6 06:14:50.2 +56:36:57 122 O21487
84922 0.0 0.1 39.7 0.082 14.8 3.70 36.5 36.2 19.9 04:15:32.6 +33:29:28 105 O21709
309737 0.0 0.1 11.0 0.440 6.0 11.80 7.2 6.3 20.9 07:25:17.7 +15:58:08 147 O21797
54598 0.0 0.2 16.6 0.201 20.7 7.10 16.9 17.4 20.1 00:42:21.7 +19:41:34 56 O21072
303775 0.0 0.1 113.1 0.673 14.0 3.10 49.4 50.1 20.6 00:58:54.5 -07:34:41 49 O20892
145452 0.0 0.1 41.6 0.026 19.2 3.50 40.7 41.6 20.1 22:12:25.9 -00:12:00 16 O18668
145486 0.0 0.1 17.7 0.533 3.8 10.30 8.6 7.7 19.9 09:25:49.5 +11:19:21 175 O21116
202421 0.0 0.2 43.6 0.143 25.7 3.00 48.6 49.1 20.4 00:19:31.7 +28:26:18 57 O21764
55636 0.0 0.0 43.5 0.124 25.8 2.80 41.8 42.3 19.6 00:44:50.4 +29:07:06 62 O21072
20000 0.0 0.1 43.1 0.055 17.2 3.20 43.6 42.8 20.0 07:41:07.7 +26:25:42 149 O21049
90482 0.0 0.0 39.3 0.225 20.6 1.90 48.0 47.0 19.1 09:52:45.8 -07:25:38 159 O18659
312645 0.0 0.1 47.4 0.303 18.9 5.20 33.1 32.5 20.9 12:38:13.2 -09:19:19 130 O21586
134340 0.0 0.0 39.4 0.247 17.2 -1.20 32.2 32.9 14.5 18:36:09.7 -19:17:18 45 O21110
136199 0.0 0.0 68.1 0.435 43.8 -1.60 96.6 97.1 18.7 01:38:28.8 -03:56:42 59 O21459
2060 0.0 0.0 13.7 0.379 6.9 5.80 17.1 18.0 18.7 22:16:33.5 -04:58:48 12 O21385
10EN65 0.0 0.0 30.7 0.314 19.2 6.50 24.4 23.5 20.8 10:40:06.1 -11:50:29 151 M12C15
08AP129 0.0 0.0 41.9 0.142 27.4 4.30 37.8 37.0 20.5 09:16:43.1 +43:16:52 150 M12C15

Table generated Sun Feb 12 13:41:09 2012 UTC

Marc W. Buie, Southwest Research Institute