Event between 05GX186 and star UC4-442-055032 with event index number of 108341
Geocentric closest approach at 2018/04/02 11:04:26 UTC
J2000 position of star is 12:34:34.5 -01:38:12
Equinox of date position of star is 12:35:29.8 -01:44:07
Stellar brightness R=15.9,
use SENSEUP=128
Star is 28 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=23.6
[RECON map]
TNO is 43.3 AU from the Sun
and 42.3 AU from the Earth.
The TNO is moving 25.2
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 421 seconds.
The 1-sigma cross-track error in the shadow position is
5854 km.
The sky-plane scale is
30677.9 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=210.9 km assuming a 5% albedo -- 8.4 sec chord
Diameter=86.1 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 05GX186, (2018/04/02 11:04UT) Object RA Dec mag sep mel Spica 13:26:09.4 -11:15:22 1.0 15.76 15 Vindemiatrix 13:03:05.1 +10:51:41 2.8 14.34 28 PPM 195518 12:28:47.8 -04:42:58 6.2 3.42 29 PPM 178820 12:35:19.4 -01:30:29 8.2 0.23 28 PPM 178819 12:35:07.8 -01:56:53 9.7 0.23 28 05GX186 12:35:30.8 -01:44:13 15.9 28 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
2.1 sigma about the mid-time.
The median site spacing is 11.0 km
RECON observability=1.0 and success probability=1.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 11:03:48 | -23.1 | Dark | Up | 24.4 | 235.4 | Low | 10:48:48 - 11:18:48 | 10795 |
| Tonasket | 11:03:47 | -23.2 | Dark | Up | 24.5 | 235.5 | Low | 10:48:47 - 11:18:47 | 10786 |
| Okanogan | 11:03:45 | -23.5 | Dark | Up | 24.8 | 235.5 | Low | 10:48:45 - 11:18:45 | 10769 |
| Brewster | 11:03:47 | -23.8 | Dark | Up | 25.0 | 235.4 | Low | 10:48:47 - 11:18:47 | 10754 |
| Manson/Chelan | 11:03:47 | -24.1 | Dark | Up | 25.4 | 235.2 | Low | 10:48:47 - 11:18:47 | 10739 |
| Entiat | 11:03:44 | -24.3 | Dark | Up | 25.5 | 235.2 | Low | 10:48:44 - 11:18:44 | 10728 |
| Wenatchee | 11:03:44 | -24.5 | Dark | Up | 25.7 | 235.2 | Low | 10:48:44 - 11:18:44 | 10715 |
| Ellensburg | 11:03:42 | -24.9 | Dark | Up | 26.1 | 235.1 | Low | 10:48:42 - 11:18:42 | 10693 |
| Pasco | 11:03:38 | -24.6 | Dark | Up | 25.7 | 236.7 | Low | 10:48:38 - 11:18:38 | 10686 |
| PNWRO | 11:03:36 | -24.6 | Dark | Up | 25.7 | 237.0 | Low | 10:48:36 - 11:18:36 | 10680 |
| Yakima | 11:03:42 | -25.2 | Dark | Up | 26.3 | 235.3 | Low | 10:48:42 - 11:18:42 | 10674 |
| Toppenish/White Swan | 11:03:41 | -25.2 | Dark | Up | 26.4 | 235.5 | Low | 10:48:41 - 11:18:41 | 10668 |
| George/Umatilla | 11:03:37 | -24.9 | Dark | Up | 26.0 | 236.6 | Low | 10:48:37 - 11:18:37 | 10667 |
| Goldendale | 11:03:39 | -25.8 | Dark | Up | 26.9 | 235.3 | Low | 10:48:39 - 11:18:39 | 10634 |
| Niwot | 11:02:54 | -19.2 | Dark | Up | 19.4 | 250.3 | Really Low | 10:47:54 - 11:17:54 | 10619 |
| The Dalles | 11:03:40 | -26.1 | Dark | Up | 27.3 | 235.1 | Low | 10:48:40 - 11:18:40 | 10617 |
| Maupin | 11:03:40 | -26.3 | Dark | Up | 27.4 | 235.4 | Low | 10:48:40 - 11:18:40 | 10599 |
| Madras/Culver | 11:03:36 | -26.7 | Dark | Up | 27.8 | 235.6 | Low | 10:48:36 - 11:18:36 | 10572 |
| Redmond | 11:03:37 | -27.0 | Dark | Up | 28.0 | 235.7 | Low | 10:48:37 - 11:18:37 | 10553 |
| Sisters | 11:03:37 | -27.2 | Dark | Up | 28.2 | 235.3 | Low | 10:48:37 - 11:18:37 | 10546 |
| Bend | 11:03:35 | -27.2 | Dark | Up | 28.2 | 235.6 | Low | 10:48:35 - 11:18:35 | 10540 |
| Oregon Observatory | 11:03:33 | -27.4 | Dark | Up | 28.4 | 235.6 | Low | 10:48:33 - 11:18:33 | 10529 |
| La Pine/Gilchrist | 11:03:33 | -27.5 | Dark | Up | 28.6 | 235.6 | Low | 10:48:33 - 11:18:33 | 10517 |
| North Lake | 11:03:33 | -27.5 | Dark | Up | 28.4 | 236.4 | Low | 10:48:33 - 11:18:33 | 10508 |
| Paisley | 11:03:29 | -27.6 | Dark | Up | 28.5 | 236.9 | Low | 10:48:29 - 11:18:29 | 10487 |
| Lakeview | 11:03:26 | -27.8 | Dark | Up | 28.7 | 237.3 | Low | 10:48:26 - 11:18:26 | 10465 |
| Chiloquin | 11:03:33 | -28.5 | Dark | Up | 29.4 | 235.8 | Low | 10:48:33 - 11:18:33 | 10453 |
| Klamath Falls | 11:03:30 | -28.6 | Dark | Up | 29.5 | 236.0 | Low | 10:48:30 - 11:18:30 | 10437 |
| Cedarville | 11:03:24 | -28.1 | Dark | Up | 28.9 | 237.8 | Low | 10:48:24 - 11:18:24 | 10434 |
| Tulelake | 11:03:28 | -28.6 | Dark | Up | 29.5 | 236.4 | Low | 10:48:28 - 11:18:28 | 10429 |
| Fall River/Burney | 11:03:25 | -29.2 | Dark | Up | 30.0 | 236.9 | Low | 10:48:25 - 11:18:25 | 10382 |
| Susanville | 11:03:21 | -29.1 | Dark | Up | 29.9 | 237.9 | Low | 10:48:21 - 11:18:21 | 10363 |
| Gimple | 11:03:20 | -29.4 | Dark | Up | 30.1 | 237.8 | Up | 10:48:20 - 11:18:20 | 10343 |
| Greenville | 11:03:20 | -29.5 | Dark | Up | 30.2 | 237.7 | Up | 10:48:20 - 11:18:20 | 10342 |
| Portola | 11:03:19 | -29.4 | Dark | Up | 30.1 | 238.3 | Up | 10:48:19 - 11:18:19 | 10333 |
| Reno | 11:03:18 | -29.1 | Dark | Up | 29.8 | 239.0 | Low | 10:48:18 - 11:18:18 | 10332 |
| Quincy | 11:03:20 | -29.6 | Dark | Up | 30.3 | 237.8 | Up | 10:48:20 - 11:18:20 | 10330 |
| Yerington | 11:03:14 | -29.0 | Dark | Up | 29.6 | 239.8 | Low | 10:48:14 - 11:18:14 | 10315 |
| Carson City | 11:03:16 | -29.3 | Dark | Up | 29.9 | 239.2 | Low | 10:48:16 - 11:18:16 | 10312 |
| Tonopah | 11:03:07 | -28.3 | Dark | Up | 28.8 | 241.9 | Low | 10:48:07 - 11:18:07 | 10301 |
| Gardnerville | 11:03:15 | -29.4 | Dark | Up | 30.0 | 239.4 | Up | 10:48:15 - 11:18:15 | 10299 |
| Hawthorne | 11:03:11 | -29.0 | Dark | Up | 29.5 | 240.5 | Low | 10:48:11 - 11:18:11 | 10299 |
| Lee Vining | 11:03:10 | -29.6 | Dark | Up | 30.1 | 240.4 | Up | 10:48:10 - 11:18:10 | 10256 |
| Indian Springs | 11:02:58 | -28.1 | Dark | Up | 28.4 | 243.8 | Low | 10:47:58 - 11:17:58 | 10245 |
| Beatty | 11:03:02 | -28.7 | Dark | Up | 29.0 | 242.8 | Low | 10:48:02 - 11:18:02 | 10243 |
| Bishop | 11:03:07 | -29.5 | Dark | Up | 29.9 | 241.3 | Low | 10:48:07 - 11:18:07 | 10236 |
| Henderson | 11:02:55 | -27.9 | Dark | Up | 28.1 | 244.6 | Low | 10:47:55 - 11:17:55 | 10227 |
| Patrick | 11:02:52 | -27.4 | Dark | Up | 27.6 | 245.7 | Low | 10:47:52 - 11:17:52 | 10210 |
| DCO | 11:02:50 | -27.1 | Dark | Up | 27.2 | 246.4 | Low | 10:47:50 - 11:17:50 | 10205 |
| Lone Pine | 11:03:04 | -29.7 | Dark | Up | 30.1 | 241.9 | Up | 10:48:04 - 11:18:04 | 10198 |
| Kingman/Dolan Springs | 11:02:52 | -27.7 | Dark | Up | 27.8 | 245.7 | Low | 10:47:52 - 11:17:52 | 10193 |
| Searchlight/Boulder City | 11:02:54 | -28.2 | Dark | Up | 28.3 | 244.9 | Low | 10:47:54 - 11:17:54 | 10193 |
| Laughlin/Bullhead City | 11:02:52 | -28.1 | Dark | Up | 28.2 | 245.3 | Low | 10:47:52 - 11:17:52 | 10181 |
| Mohave Valley | 11:02:51 | -28.2 | Dark | Up | 28.3 | 245.5 | Low | 10:47:51 - 11:17:51 | 10165 |
| Lake Havasu City | 11:02:50 | -28.2 | Dark | Up | 28.3 | 245.8 | Low | 10:47:50 - 11:17:50 | 10144 |
| Parker | 11:02:48 | -28.4 | Dark | Up | 28.4 | 246.0 | Low | 10:47:48 - 11:17:48 | 10123 |
| Blythe | 11:02:46 | -28.9 | Dark | Up | 28.9 | 246.1 | Low | 10:47:46 - 11:17:46 | 10083 |
| CPSLO | 11:03:07 | -32.2 | Dark | Up | 32.5 | 240.5 | Up | 10:48:07 - 11:18:07 | 10060 |
| Idyllwild | 11:02:51 | -30.3 | Dark | Up | 30.4 | 244.4 | Up | 10:47:51 - 11:17:51 | 10047 |
| Calipatria | 11:02:49 | -29.8 | Dark | Up | 29.8 | 245.6 | Low | 10:47:49 - 11:17:49 | 10032 |
| Wildwood | 11:02:57 | -31.4 | Dark | Up | 31.6 | 242.8 | Up | 10:47:57 - 11:17:57 | 10029 |
| Yuma | 11:02:44 | -29.3 | Dark | Up | 29.3 | 246.5 | Low | 10:47:44 - 11:17:44 | 10023 |
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 05GX186, (2018/04/02 11:04UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 15.76 15 Vindemiatrix 13:02:10.3 +10:57:33 2.8 14.34 28 PPM 195518 12:27:51.5 -04:36:55 6.2 3.42 29 PPM 178820 12:34:23.1 -01:24:28 8.2 0.23 28 PPM 178819 12:34:11.6 -01:50:51 9.7 0.23 28 05GX186 12:34:34.5 -01:38:12 15.9 28 Positions are for J2000
Event circumstances last updated at 2017/12/02 17:24:47 UT
Marc W. Buie, Southwest Research Institute