Event between (123509) 00WK183 and star GA1100:01452343 with event index number of 175428
Geocentric closest approach at 2019/01/17 11:03:40 UTC
J2000 position of star is 05:48:52.7 +21:25:19
Equinox of date position of star is 05:50:00.7 +21:25:36
Stellar brightness G=14.5,
use SENSEUP=128
Star is 22 degrees from the moon.
Moon is 81% illuminated.
TNO apparent brightness V=22.9
[RECON map]
TNO is 42.6 AU from the Sun
and 41.8 AU from the Earth.
The TNO is moving 21.8
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 1833 seconds.
The 1-sigma cross-track error in the shadow position is
3471 km.
The sky-plane scale is
30291.4 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 13.2 sec chord
Diameter=117.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 123509, (2019/01/17 11:04UT) Object RA Dec mag sep mel Betelgeuse 05:56:12.2 +07:24:33 0.4 14.10 26 Alnath 05:27:29.9 +28:37:18 1.6 8.82 19 54Chi1Ori 05:55:30.7 +20:16:41 5.1 1.72 23 PPM 094925 05:50:21.2 +21:08:26 7.1 0.30 22 PPM 094937 05:50:39.9 +21:18:58 9.5 0.19 22 123509 05:50:01.2 +21:25:36 14.5 22 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
0.5 sigma about the mid-time.
The median site spacing is 15.5 km
RECON observability=0.9 and success probability=10.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 11:00:39 | -45.2 | Dark | Up | 25.7 | 273.3 | Low | 10:45:39 - 11:15:39 | 1286 |
| Summerland | 11:00:39 | -45.4 | Dark | Up | 25.9 | 273.1 | Low | 10:45:39 - 11:15:39 | 1273 |
| Penticton | 11:00:38 | -45.4 | Dark | Up | 25.8 | 273.4 | Low | 10:45:38 - 11:15:38 | 1254 |
| Okanagan Falls | 11:00:37 | -45.5 | Dark | Up | 25.8 | 273.5 | Low | 10:45:37 - 11:15:37 | 1239 |
| Oliver | 11:00:37 | -45.6 | Dark | Up | 25.7 | 273.6 | Low | 10:45:37 - 11:15:37 | 1227 |
| Anarchist Mountain Observatory | 11:00:36 | -45.6 | Dark | Up | 25.6 | 273.8 | Low | 10:45:36 - 11:15:36 | 1219 |
| Oroville | 11:00:35 | -45.6 | Dark | Up | 25.7 | 273.8 | Low | 10:45:35 - 11:15:35 | 1212 |
| Tonasket | 11:00:35 | -45.7 | Dark | Up | 25.6 | 273.9 | Low | 10:45:35 - 11:15:35 | 1194 |
| Okanogan | 11:00:34 | -45.9 | Dark | Up | 25.7 | 273.9 | Low | 10:45:34 - 11:15:34 | 1165 |
| Brewster | 11:00:33 | -46.2 | Dark | Up | 25.8 | 273.9 | Low | 10:45:33 - 11:15:33 | 1138 |
| Manson/Chelan | 11:00:32 | -46.5 | Dark | Up | 26.1 | 273.7 | Low | 10:45:32 - 11:15:32 | 1112 |
| Entiat | 11:00:31 | -46.6 | Dark | Up | 26.1 | 273.8 | Low | 10:45:31 - 11:15:31 | 1093 |
| Wenatchee | 11:00:31 | -46.8 | Dark | Up | 26.2 | 273.8 | Low | 10:45:31 - 11:15:31 | 1071 |
| Ellensburg | 11:00:30 | -47.1 | Dark | Up | 26.3 | 273.9 | Low | 10:45:30 - 11:15:30 | 1033 |
| Pasco | 11:00:26 | -46.5 | Dark | Up | 25.3 | 275.2 | Low | 10:45:26 - 11:15:26 | 1012 |
| Yakima | 11:00:28 | -47.3 | Dark | Up | 26.3 | 274.1 | Low | 10:45:28 - 11:15:28 | 1000 |
| PNWRO | 11:00:24 | -46.4 | Dark | Up | 25.1 | 275.5 | Low | 10:45:24 - 11:15:24 | 999 |
| Toppenish/White Swan | 11:00:27 | -47.2 | Dark | Up | 26.1 | 274.3 | Low | 10:45:27 - 11:15:27 | 987 |
| George/Umatilla | 11:00:24 | -46.7 | Dark | Up | 25.4 | 275.2 | Low | 10:45:24 - 11:15:24 | 980 |
| Niwot | 10:59:57 | -37.9 | Dark | Down | 14.2 | 286.2 | Really Low | 10:44:57 - 11:14:57 | 934 |
| Goldendale | 11:00:26 | -47.7 | Dark | Up | 26.4 | 274.3 | Low | 10:45:26 - 11:15:26 | 931 |
| The Dalles | 11:00:25 | -48.1 | Dark | Up | 26.6 | 274.1 | Low | 10:45:25 - 11:15:25 | 903 |
| Maupin | 11:00:24 | -48.1 | Dark | Up | 26.5 | 274.4 | Low | 10:45:24 - 11:15:24 | 872 |
| Madras/Culver | 11:00:22 | -48.4 | Dark | Up | 26.5 | 274.6 | Low | 10:45:22 - 11:15:22 | 826 |
| Redmond | 11:00:20 | -48.5 | Dark | Up | 26.5 | 274.8 | Low | 10:45:20 - 11:15:20 | 796 |
| Sisters | 11:00:21 | -48.8 | Dark | Up | 26.8 | 274.5 | Low | 10:45:21 - 11:15:21 | 786 |
| Bend | 11:00:20 | -48.7 | Dark | Up | 26.6 | 274.8 | Low | 10:45:20 - 11:15:20 | 774 |
| Oregon Observatory | 11:00:20 | -48.9 | Dark | Up | 26.7 | 274.8 | Low | 10:45:20 - 11:15:20 | 756 |
| La Pine/Gilchrist | 11:00:19 | -49.0 | Dark | Up | 26.7 | 274.8 | Low | 10:45:19 - 11:15:19 | 737 |
| North Lake | 11:00:17 | -48.7 | Dark | Up | 26.3 | 275.5 | Low | 10:45:17 - 11:15:17 | 718 |
| Paisley | 11:00:15 | -48.7 | Dark | Up | 26.0 | 275.9 | Low | 10:45:15 - 11:15:15 | 682 |
| Lakeview | 11:00:13 | -48.7 | Dark | Up | 25.8 | 276.3 | Low | 10:45:13 - 11:15:13 | 645 |
| Chiloquin | 11:00:16 | -49.6 | Dark | Up | 26.9 | 275.2 | Low | 10:45:16 - 11:15:16 | 634 |
| Klamath Falls | 11:00:15 | -49.7 | Dark | Up | 26.8 | 275.4 | Low | 10:45:15 - 11:15:15 | 607 |
| Cedarville | 11:00:10 | -48.8 | Dark | Up | 25.6 | 276.7 | Low | 10:45:10 - 11:15:10 | 595 |
| Tulelake | 11:00:13 | -49.6 | Dark | Up | 26.6 | 275.7 | Low | 10:45:13 - 11:15:13 | 593 |
| Fall River/Burney | 11:00:10 | -49.8 | Dark | Up | 26.4 | 276.2 | Low | 10:45:10 - 11:15:10 | 518 |
| Susanville | 11:00:07 | -49.4 | Dark | Up | 25.8 | 277.0 | Low | 10:45:07 - 11:15:07 | 485 |
| Gimple | 11:00:07 | -49.7 | Dark | Up | 25.9 | 277.0 | Low | 10:45:07 - 11:15:07 | 455 |
| Greenville | 11:00:07 | -49.7 | Dark | Up | 26.0 | 276.9 | Low | 10:45:07 - 11:15:07 | 453 |
| Portola | 11:00:06 | -49.5 | Dark | Up | 25.6 | 277.4 | Low | 10:45:06 - 11:15:06 | 439 |
| Quincy | 11:00:06 | -49.8 | Dark | Up | 26.0 | 277.0 | Low | 10:45:06 - 11:15:06 | 435 |
| Reno | 11:00:04 | -49.1 | Dark | Up | 25.1 | 277.9 | Low | 10:45:04 - 11:15:04 | 435 |
| Yerington | 11:00:02 | -48.7 | Dark | Up | 24.5 | 278.5 | Low | 10:45:02 - 11:15:02 | 407 |
| Carson City | 11:00:03 | -49.1 | Dark | Up | 25.0 | 278.0 | Low | 10:45:03 - 11:15:03 | 405 |
| Tonopah | 10:59:57 | -47.4 | Dark | Up | 22.9 | 280.0 | Low | 10:44:57 - 11:14:57 | 386 |
| Gardnerville | 11:00:02 | -49.2 | Dark | Up | 24.9 | 278.2 | Low | 10:45:02 - 11:15:02 | 385 |
| Hawthorne | 10:59:59 | -48.4 | Dark | Up | 24.0 | 279.0 | Low | 10:44:59 - 11:14:59 | 383 |
| Lee Vining | 10:59:58 | -48.9 | Dark | Up | 24.3 | 279.0 | Low | 10:44:58 - 11:14:58 | 318 |
| Indian Springs | 10:59:51 | -46.5 | Dark | Up | 21.4 | 281.4 | Low | 10:44:51 - 11:14:51 | 305 |
| Beatty | 10:59:53 | -47.3 | Dark | Up | 22.3 | 280.7 | Low | 10:44:53 - 11:14:53 | 299 |
| Bishop | 10:59:56 | -48.5 | Dark | Up | 23.7 | 279.6 | Low | 10:44:56 - 11:14:56 | 288 |
| Henderson | 10:59:49 | -46.0 | Dark | Up | 20.7 | 282.0 | Low | 10:44:49 - 11:14:49 | 280 |
| Patrick | 10:59:46 | -45.2 | Dark | Down | 19.7 | 282.8 | Really Low | 10:44:46 - 11:14:46 | 261 |
| DCO | 10:59:45 | -44.6 | Dark | Down | 19.1 | 283.2 | Really Low | 10:44:45 - 11:14:45 | 257 |
| Kingman/Dolan Springs | 10:59:46 | -45.4 | Dark | Down | 19.8 | 282.8 | Really Low | 10:44:46 - 11:14:46 | 235 |
| Lone Pine | 10:59:53 | -48.4 | Dark | Up | 23.3 | 280.1 | Low | 10:44:53 - 11:14:53 | 231 |
| Searchlight/Boulder City | 10:59:47 | -46.0 | Dark | Up | 20.6 | 282.2 | Low | 10:44:47 - 11:14:47 | 231 |
| Laughlin/Bullhead City | 10:59:46 | -45.8 | Dark | Up | 20.2 | 282.5 | Low | 10:44:46 - 11:14:46 | 216 |
| Mohave Valley | 10:59:45 | -45.8 | Dark | Up | 20.2 | 282.6 | Low | 10:44:45 - 11:14:45 | 192 |
| Lake Havasu City | 10:59:44 | -45.7 | Dark | Down | 19.9 | 282.9 | Really Low | 10:44:44 - 11:14:44 | 165 |
| Parker | 10:59:43 | -45.7 | Dark | Down | 19.8 | 283.0 | Really Low | 10:44:43 - 11:14:43 | 134 |
| Blythe | 10:59:41 | -46.0 | Dark | Down | 19.9 | 283.0 | Really Low | 10:44:41 - 11:14:41 | 77 |
| CPSLO | 10:59:52 | -50.7 | Dark | Up | 25.1 | 279.3 | Low | 10:44:52 - 11:14:52 | 32 |
| Idyllwild | 10:59:44 | -47.7 | Dark | Up | 21.7 | 282.0 | Low | 10:44:44 - 11:14:44 | 17 |
| Calipatria | 10:59:41 | -46.8 | Dark | Up | 20.6 | 282.8 | Low | 10:44:41 - 11:14:41 | 2 |
| Yuma | 10:59:39 | -46.1 | Dark | Down | 19.8 | 283.3 | Really Low | 10:44:39 - 11:14:39 | -8 |
| Wildwood | 10:59:47 | -49.2 | Dark | Up | 23.3 | 280.9 | Low | 10:44:47 - 11:14:47 | -12 |
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 123509, (2019/01/17 11:04UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 14.10 26 Alnath 05:26:17.5 +28:36:23 1.6 8.82 19 54Chi1Ori 05:54:22.7 +20:16:32 5.1 1.72 23 PPM 094925 05:49:12.8 +21:08:09 7.1 0.30 22 PPM 094937 05:49:31.4 +21:18:42 9.5 0.19 22 123509 05:48:52.7 +21:25:19 14.5 22 Positions are for J2000
Event circumstances last updated at 2018/11/28 22:03:30 UT
Marc W. Buie, Southwest Research Institute