Event between (523700) 14GM54 and star UC4-564-077447 with event index number of 324146
Geocentric closest approach at 2018/10/15 02:55:04 UTC
J2000 position of star is 19:02:50.5 +22:43:45
Equinox of date position of star is 19:03:38.1 +22:45:27
Stellar brightness R=15.9,
use SENSEUP=128
Star is 45 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 26.5 AU from the Sun
and 26.5 AU from the Earth.
The TNO is moving 25.4
km/sec on the sky relative to the star, or,
4.8 arcsec/hr.
The 1-sigma error in the time of the event is 43 seconds.
The 1-sigma cross-track error in the shadow position is
1261 km.
The sky-plane scale is
19211.0 km/arcsec.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 9.0 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 523700, (2018/10/15 02:55UT) Object RA Dec mag sep mel Vega 18:37:34.5 +38:48:07 0.0 16.98 60 Tarazed 19:47:09.2 +10:39:37 2.7 15.95 39 PPM 108407 19:07:25.4 +24:16:52 5.9 1.75 47 PPM 108194 19:00:45.6 +22:50:31 7.7 0.67 45 PPM 108331 19:05:13.9 +22:41:38 8.6 0.37 45 PPM 108291 19:03:48.1 +22:30:49 10.5 0.25 45 523700 19:03:38.2 +22:45:27 15.9 45 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
5.0 sigma about the mid-time.
The median site spacing is 5.5 km
RECON observability=1.0 and success probability=24.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 02:54:28 | -29.7 | Dark | Up | 54.8 | 251.5 | Up | 02:50:21 - 02:58:35 | -223 |
| DCO | 02:54:46 | -24.5 | Dark | Up | 62.3 | 251.1 | Up | 02:50:39 - 02:58:53 | -864 |
| Patrick | 02:54:44 | -23.9 | Dark | Up | 62.8 | 249.7 | Up | 02:50:37 - 02:58:51 | -917 |
| Kingman/Dolan Springs | 02:54:45 | -23.8 | Dark | Up | 63.0 | 249.9 | Up | 02:50:38 - 02:58:52 | -935 |
| Lake Havasu City | 02:54:48 | -23.6 | Dark | Up | 63.4 | 251.0 | Up | 02:50:41 - 02:58:55 | -967 |
| Parker | 02:54:49 | -23.7 | Dark | Up | 63.5 | 251.7 | Up | 02:50:42 - 02:58:56 | -969 |
| Laughlin/Bullhead City | 02:54:44 | -23.3 | Dark | Up | 63.4 | 249.4 | Up | 02:50:37 - 02:58:51 | -978 |
| Mohave Valley | 02:54:46 | -23.4 | Dark | Up | 63.5 | 249.9 | Up | 02:50:39 - 02:58:53 | -981 |
| Henderson | 02:54:40 | -22.9 | Dark | Up | 63.4 | 247.3 | Up | 02:50:33 - 02:58:47 | -998 |
| Searchlight/Boulder City | 02:54:43 | -23.0 | Dark | Up | 63.6 | 248.4 | Up | 02:50:36 - 02:58:50 | -1001 |
| Blythe | 02:54:51 | -23.5 | Dark | Up | 63.9 | 252.4 | Up | 02:50:44 - 02:58:58 | -1002 |
| Yuma | 02:54:55 | -23.6 | Dark | Up | 64.2 | 254.2 | Up | 02:50:48 - 02:59:02 | -1020 |
| Indian Springs | 02:54:38 | -22.3 | Dark | Up | 63.7 | 245.4 | Up | 02:50:31 - 02:58:45 | -1046 |
| Calipatria | 02:54:52 | -22.8 | Dark | Up | 64.8 | 252.3 | Up | 02:50:45 - 02:58:59 | -1088 |
| Beatty | 02:54:35 | -21.4 | Dark | Up | 64.4 | 243.4 | Up | 02:50:28 - 02:58:42 | -1128 |
| Tonopah | 02:54:31 | -20.9 | Dark | Up | 64.2 | 240.6 | Up | 02:50:24 - 02:58:38 | -1147 |
| Rutland | 02:53:40 | -17.7 | AT | Up | 57.9 | 220.3 | Up | 02:49:33 - 02:57:47 | -1164 |
| PNWRO | 02:53:56 | -18.6 | Dark | Up | 60.5 | 225.7 | Up | 02:49:49 - 02:58:03 | -1169 |
| Idyllwild | 02:54:49 | -21.7 | Dark | Up | 65.6 | 249.7 | Up | 02:50:42 - 02:58:56 | -1177 |
| Oroville | 02:53:44 | -17.9 | AT | Up | 58.6 | 221.3 | Up | 02:49:37 - 02:57:51 | -1177 |
| Tonasket | 02:53:44 | -17.9 | AT | Up | 58.8 | 221.6 | Up | 02:49:37 - 02:57:51 | -1179 |
| Penticton | 02:53:41 | -17.7 | AT | Up | 58.2 | 220.4 | Up | 02:49:34 - 02:57:48 | -1179 |
| Okanagan Falls | 02:53:42 | -17.7 | AT | Up | 58.4 | 220.6 | Up | 02:49:35 - 02:57:49 | -1182 |
| Southern Okanagan | 02:53:43 | -17.7 | AT | Up | 58.5 | 220.8 | Up | 02:49:36 - 02:57:50 | -1182 |
| Pasco | 02:53:55 | -18.4 | Dark | Up | 60.4 | 225.0 | Up | 02:49:48 - 02:58:02 | -1183 |
| Okanogan | 02:53:46 | -17.8 | AT | Up | 59.1 | 221.7 | Up | 02:49:39 - 02:57:53 | -1192 |
| George/Umatilla | 02:53:56 | -18.3 | Dark | Up | 60.7 | 225.0 | Up | 02:49:49 - 02:58:03 | -1202 |
| Brewster | 02:53:47 | -17.7 | AT | Up | 59.4 | 221.7 | Up | 02:49:40 - 02:57:54 | -1209 |
| Manson/Chelan | 02:53:47 | -17.5 | AT | Up | 59.7 | 221.3 | Up | 02:49:40 - 02:57:54 | -1236 |
| Lone Pine | 02:54:35 | -20.4 | Dark | Up | 65.4 | 242.1 | Up | 02:50:28 - 02:58:42 | -1238 |
| Entiat | 02:53:48 | -17.5 | AT | Up | 59.9 | 221.5 | Up | 02:49:41 - 02:57:55 | -1243 |
| Hawthorne | 02:54:28 | -19.7 | Dark | Up | 64.9 | 237.7 | Up | 02:50:21 - 02:58:35 | -1252 |
| Bishop | 02:54:32 | -20.0 | Dark | Up | 65.3 | 240.2 | Up | 02:50:25 - 02:58:39 | -1252 |
| Wenatchee | 02:53:49 | -17.5 | AT | Up | 60.1 | 221.6 | Up | 02:49:42 - 02:57:56 | -1253 |
| Toppenish/White Swan | 02:53:54 | -17.6 | AT | Up | 60.9 | 222.8 | Up | 02:49:47 - 02:58:01 | -1271 |
| Ellensburg | 02:53:51 | -17.4 | AT | Up | 60.5 | 221.7 | Up | 02:49:44 - 02:57:58 | -1274 |
| Yakima | 02:53:52 | -17.4 | AT | Up | 60.8 | 222.2 | Up | 02:49:45 - 02:57:59 | -1280 |
| Yerington | 02:54:25 | -19.3 | Dark | Up | 65.0 | 236.0 | Up | 02:50:18 - 02:58:32 | -1286 |
| Lee Vining | 02:54:29 | -19.4 | Dark | Up | 65.5 | 237.9 | Up | 02:50:22 - 02:58:36 | -1300 |
| Goldendale | 02:53:55 | -17.3 | AT | Up | 61.5 | 222.8 | Up | 02:49:48 - 02:58:02 | -1308 |
| Cedarville | 02:54:13 | -18.2 | Dark | Up | 64.1 | 230.0 | Up | 02:50:06 - 02:58:20 | -1324 |
| Lakeview | 02:54:11 | -18.0 | Dark | Up | 63.8 | 228.7 | Up | 02:50:04 - 02:58:18 | -1327 |
| Wildwood | 02:54:46 | -20.1 | Dark | Up | 66.9 | 246.6 | Up | 02:50:39 - 02:58:53 | -1328 |
| Reno | 02:54:23 | -18.7 | Dark | Up | 65.1 | 234.0 | Up | 02:50:16 - 02:58:30 | -1329 |
| Carson City | 02:54:23 | -18.7 | Dark | Up | 65.3 | 234.6 | Up | 02:50:16 - 02:58:30 | -1333 |
| Paisley | 02:54:08 | -17.9 | AT | Up | 63.6 | 227.6 | Up | 02:50:01 - 02:58:15 | -1333 |
| Gardnerville | 02:54:25 | -18.8 | Dark | Up | 65.4 | 235.1 | Up | 02:50:18 - 02:58:32 | -1333 |
| Maupin | 02:53:58 | -17.2 | AT | Up | 62.1 | 223.2 | Up | 02:49:51 - 02:58:05 | -1336 |
| The Dalles | 02:53:55 | -17.1 | AT | Up | 61.9 | 222.4 | Up | 02:49:48 - 02:58:02 | -1338 |
| Madras/Culver | 02:54:00 | -17.2 | AT | Up | 62.5 | 223.8 | Up | 02:49:53 - 02:58:07 | -1347 |
| North Lake | 02:54:06 | -17.5 | AT | Up | 63.4 | 226.2 | Up | 02:49:59 - 02:58:13 | -1352 |
| Redmond | 02:54:01 | -17.2 | AT | Up | 62.8 | 224.2 | Up | 02:49:54 - 02:58:08 | -1356 |
| Bend | 02:54:02 | -17.2 | AT | Up | 63.0 | 224.3 | Up | 02:49:55 - 02:58:09 | -1370 |
| Portola | 02:54:21 | -18.2 | Dark | Up | 65.3 | 232.4 | Up | 02:50:14 - 02:58:28 | -1375 |
| Susanville | 02:54:18 | -18.0 | AT | Up | 65.1 | 231.1 | Up | 02:50:11 - 02:58:25 | -1379 |
| Oregon Observatory | 02:54:03 | -17.1 | AT | Up | 63.2 | 224.3 | Up | 02:49:56 - 02:58:10 | -1382 |
| Sisters | 02:54:02 | -16.9 | AT | Up | 63.0 | 223.5 | Up | 02:49:55 - 02:58:09 | -1385 |
| La Pine/Gilchrist | 02:54:04 | -17.1 | AT | Up | 63.4 | 224.5 | Up | 02:49:57 - 02:58:11 | -1390 |
| Gimple | 02:54:19 | -17.8 | AT | Up | 65.4 | 231.2 | Up | 02:50:12 - 02:58:26 | -1400 |
| Greenville | 02:54:18 | -17.8 | AT | Up | 65.4 | 231.0 | Up | 02:50:11 - 02:58:25 | -1407 |
| Quincy | 02:54:20 | -17.8 | AT | Up | 65.6 | 231.4 | Up | 02:50:13 - 02:58:27 | -1410 |
| Tulelake | 02:54:10 | -17.2 | AT | Up | 64.6 | 227.1 | Up | 02:50:03 - 02:58:17 | -1416 |
| Fall River/Burney | 02:54:14 | -17.4 | AT | Up | 65.1 | 228.7 | Up | 02:50:07 - 02:58:21 | -1426 |
| Klamath Falls | 02:54:09 | -17.0 | AT | Up | 64.5 | 226.2 | Up | 02:50:02 - 02:58:16 | -1434 |
| Chiloquin | 02:54:08 | -16.9 | AT | Up | 64.4 | 225.5 | Up | 02:50:01 - 02:58:15 | -1435 |
| CPSLO | 02:54:39 | -18.3 | Dark | Up | 67.9 | 240.9 | Up | 02:50:32 - 02:58:46 | -1476 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 523700, (2018/10/15 02:55UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 16.98 60 Tarazed 19:46:15.6 +10:36:48 2.7 15.95 39 PPM 108407 19:06:38.5 +24:15:03 5.9 1.75 47 PPM 108194 18:59:58.0 +22:48:53 7.7 0.67 45 PPM 108331 19:04:26.2 +22:39:53 8.6 0.37 45 PPM 108291 19:03:00.3 +22:29:07 10.5 0.25 45 523700 19:02:50.5 +22:43:45 15.9 45 Positions are for J2000
Event circumstances last updated at 2018/10/11 06:02:12 UT
Marc W. Buie, Southwest Research Institute