Event between (143707) 03UY117 and star GDR2_46.235_22.112 with event index number of 154021
Geocentric closest approach at 2018/10/26 04:06:41 UTC
J2000 position of star is 03:04:56.4 +22:06:43
Equinox of date position of star is 03:06:00.2 +22:10:57
Stellar brightness G=14.5,
use SENSEUP=128
Star is 9 degrees from the moon.
Moon is 97% illuminated.
TNO apparent brightness V=21.0
[RECON map]
TNO is 33.9 AU from the Sun
and 33.0 AU from the Earth.
The TNO is moving 22.8
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is
1267 km.
The sky-plane scale is
23934.3 km/arcsec.
The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 19.2 sec chord
Diameter=178.2 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is 5:2EEE
Star training set for 143707, (2018/10/26 04:07UT) Object RA Dec mag sep mel Aldebaran 04:37:00.2 +16:32:44 0.8 22.16 19 Hamal 02:08:14.3 +23:33:02 2.0 13.38 20 48Eps Ari 03:00:17.5 +21:24:52 5.6 1.54 9 PPM 092164 03:03:32.8 +22:26:47 8.3 0.63 10 PPM 092189 03:05:40.6 +21:47:47 9.7 0.40 9 PPM 092200 03:06:38.6 +21:54:40 11.2 0.31 9 143707 03:06:01.6 +22:11:03 14.5 9 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 13.8 km
RECON observability=1.0 and success probability=0.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 04:08:39 | -33.1 | Dark | Up | 30.1 | 90.2 | Up | 03:59:07 - 04:18:11 | -4242 |
| Tonasket | 04:08:40 | -33.2 | Dark | Up | 30.1 | 90.1 | Up | 03:59:08 - 04:18:12 | -4255 |
| Okanogan | 04:08:42 | -33.2 | Dark | Up | 30.0 | 89.8 | Up | 03:59:10 - 04:18:14 | -4269 |
| Manson/Chelan | 04:08:44 | -33.0 | Dark | Up | 29.6 | 89.1 | Low | 03:59:12 - 04:18:16 | -4277 |
| Brewster | 04:08:43 | -33.2 | Dark | Up | 29.9 | 89.5 | Low | 03:59:11 - 04:18:15 | -4277 |
| Entiat | 04:08:45 | -33.0 | Dark | Up | 29.6 | 88.9 | Low | 03:59:13 - 04:18:17 | -4287 |
| Wenatchee | 04:08:47 | -33.1 | Dark | Up | 29.5 | 88.7 | Low | 03:59:15 - 04:18:19 | -4299 |
| Ellensburg | 04:08:48 | -33.1 | Dark | Up | 29.4 | 88.3 | Low | 03:59:16 - 04:18:20 | -4315 |
| Yakima | 04:08:50 | -33.2 | Dark | Up | 29.4 | 88.1 | Low | 03:59:18 - 04:18:22 | -4338 |
| Toppenish/White Swan | 04:08:51 | -33.4 | Dark | Up | 29.5 | 88.1 | Low | 03:59:19 - 04:18:23 | -4356 |
| Goldendale | 04:08:54 | -33.3 | Dark | Up | 29.2 | 87.5 | Low | 03:59:22 - 04:18:26 | -4374 |
| The Dalles | 04:08:55 | -33.1 | Dark | Up | 28.9 | 87.1 | Low | 03:59:23 - 04:18:27 | -4375 |
| Maupin | 04:08:56 | -33.3 | Dark | Up | 28.9 | 86.9 | Low | 03:59:24 - 04:18:28 | -4403 |
| Pasco | 04:08:50 | -34.2 | Dark | Up | 30.3 | 88.9 | Up | 03:59:18 - 04:18:22 | -4405 |
| George/Umatilla | 04:08:51 | -34.2 | Dark | Up | 30.2 | 88.5 | Up | 03:59:19 - 04:18:23 | -4418 |
| PNWRO | 04:08:51 | -34.5 | Dark | Up | 30.5 | 88.9 | Up | 03:59:19 - 04:18:23 | -4428 |
| Madras/Culver | 04:08:58 | -33.4 | Dark | Up | 28.9 | 86.6 | Low | 03:59:26 - 04:18:30 | -4434 |
| Sisters | 04:09:00 | -33.2 | Dark | Up | 28.6 | 86.1 | Low | 03:59:28 - 04:18:32 | -4439 |
| Redmond | 04:09:00 | -33.5 | Dark | Up | 28.8 | 86.4 | Low | 03:59:28 - 04:18:32 | -4454 |
| Bend | 04:09:01 | -33.5 | Dark | Up | 28.7 | 86.2 | Low | 03:59:29 - 04:18:33 | -4462 |
| Oregon Observatory | 04:09:02 | -33.4 | Dark | Up | 28.6 | 86.0 | Low | 03:59:30 - 04:18:34 | -4468 |
| La Pine/Gilchrist | 04:09:02 | -33.4 | Dark | Up | 28.6 | 85.8 | Low | 03:59:30 - 04:18:34 | -4479 |
| North Lake | 04:09:04 | -34.0 | Dark | Up | 29.0 | 86.0 | Low | 03:59:32 - 04:18:36 | -4527 |
| Chiloquin | 04:09:07 | -33.5 | Dark | Up | 28.2 | 85.0 | Low | 03:59:35 - 04:18:39 | -4535 |
| Klamath Falls | 04:09:09 | -33.6 | Dark | Up | 28.3 | 84.9 | Low | 03:59:37 - 04:18:41 | -4560 |
| Paisley | 04:09:06 | -34.4 | Dark | Up | 29.2 | 85.9 | Low | 03:59:34 - 04:18:38 | -4574 |
| Tulelake | 04:09:09 | -33.9 | Dark | Up | 28.5 | 84.9 | Low | 03:59:37 - 04:18:41 | -4588 |
| Lakeview | 04:09:08 | -34.7 | Dark | Up | 29.3 | 85.8 | Low | 03:59:36 - 04:18:40 | -4613 |
| Fall River/Burney | 04:09:13 | -34.2 | Dark | Up | 28.5 | 84.5 | Low | 03:59:41 - 04:18:45 | -4649 |
| Cedarville | 04:09:10 | -35.0 | Dark | Up | 29.4 | 85.5 | Low | 03:59:38 - 04:18:42 | -4662 |
| Susanville | 04:09:15 | -34.9 | Dark | Up | 29.0 | 84.6 | Low | 03:59:43 - 04:18:47 | -4717 |
| Greenville | 04:09:16 | -34.8 | Dark | Up | 28.7 | 84.3 | Low | 03:59:44 - 04:18:48 | -4725 |
| Gimple | 04:09:16 | -34.9 | Dark | Up | 28.8 | 84.3 | Low | 03:59:44 - 04:18:48 | -4728 |
| Quincy | 04:09:17 | -34.9 | Dark | Up | 28.7 | 84.2 | Low | 03:59:45 - 04:18:49 | -4738 |
| Portola | 04:09:17 | -35.2 | Dark | Up | 29.1 | 84.4 | Low | 03:59:45 - 04:18:49 | -4765 |
| Reno | 04:09:17 | -35.8 | Dark | Up | 29.5 | 84.6 | Low | 03:59:45 - 04:18:49 | -4807 |
| Carson City | 04:09:19 | -35.9 | Dark | Up | 29.5 | 84.5 | Low | 03:59:47 - 04:18:51 | -4832 |
| Gardnerville | 04:09:20 | -36.0 | Dark | Up | 29.5 | 84.4 | Low | 03:59:48 - 04:18:52 | -4850 |
| Yerington | 04:09:19 | -36.4 | Dark | Up | 30.0 | 84.7 | Low | 03:59:47 - 04:18:51 | -4869 |
| Hawthorne | 04:09:20 | -37.0 | Dark | Up | 30.4 | 84.8 | Up | 03:59:48 - 04:18:52 | -4922 |
| Lee Vining | 04:09:23 | -36.7 | Dark | Up | 29.9 | 84.2 | Low | 03:59:51 - 04:18:55 | -4942 |
| Tonopah | 04:09:20 | -38.1 | Dark | Up | 31.4 | 85.3 | Up | 03:59:48 - 04:18:52 | -5009 |
| Bishop | 04:09:24 | -37.4 | Dark | Up | 30.5 | 84.2 | Up | 03:59:52 - 04:18:56 | -5013 |
| CPSLO | 04:09:34 | -36.1 | Dark | Up | 28.4 | 81.9 | Low | 04:00:02 - 04:19:06 | -5072 |
| Lone Pine | 04:09:27 | -37.9 | Dark | Up | 30.6 | 84.0 | Up | 03:59:55 - 04:18:59 | -5080 |
| Beatty | 04:09:24 | -38.8 | Dark | Up | 31.7 | 84.9 | Up | 03:59:52 - 04:18:56 | -5110 |
| Indian Springs | 04:09:24 | -39.7 | Dark | Up | 32.5 | 85.3 | Up | 03:59:52 - 04:18:56 | -5176 |
| Henderson | 04:09:25 | -40.4 | Dark | Up | 33.1 | 85.3 | Up | 03:59:53 - 04:18:57 | -5243 |
| Wildwood | 04:09:36 | -38.0 | Dark | Up | 29.9 | 82.3 | Low | 04:00:04 - 04:19:08 | -5244 |
| Searchlight/Boulder City | 04:09:27 | -40.6 | Dark | Up | 33.1 | 85.0 | Up | 03:59:55 - 04:18:59 | -5289 |
| Niwot | 04:08:55 | -46.0 | Dark | Up | 40.7 | 94.3 | Up | 03:59:23 - 04:18:27 | -5325 |
| Laughlin/Bullhead City | 04:09:28 | -41.0 | Dark | Up | 33.3 | 85.0 | Up | 03:59:56 - 04:19:00 | -5325 |
| Patrick | 04:09:26 | -41.5 | Dark | Up | 33.9 | 85.5 | Up | 03:59:54 - 04:18:58 | -5335 |
| Kingman/Dolan Springs | 04:09:27 | -41.4 | Dark | Up | 33.7 | 85.3 | Up | 03:59:55 - 04:18:59 | -5345 |
| Mohave Valley | 04:09:28 | -41.1 | Dark | Up | 33.3 | 84.8 | Up | 03:59:56 - 04:19:00 | -5346 |
| Idyllwild | 04:09:35 | -39.6 | Dark | Up | 31.4 | 83.0 | Up | 04:00:03 - 04:19:07 | -5348 |
| Lake Havasu City | 04:09:29 | -41.4 | Dark | Up | 33.5 | 84.7 | Up | 03:59:57 - 04:19:01 | -5387 |
| DCO | 04:09:26 | -42.1 | Dark | Up | 34.5 | 85.7 | Up | 03:59:54 - 04:18:58 | -5387 |
| Parker | 04:09:31 | -41.5 | Dark | Up | 33.5 | 84.4 | Up | 03:59:59 - 04:19:03 | -5415 |
| Calipatria | 04:09:36 | -40.7 | Dark | Up | 32.4 | 83.2 | Up | 04:00:04 - 04:19:08 | -5443 |
| Blythe | 04:09:33 | -41.4 | Dark | Up | 33.2 | 84.0 | Up | 04:00:01 - 04:19:05 | -5443 |
| Yuma | 04:09:36 | -41.6 | Dark | Up | 33.1 | 83.3 | Up | 04:00:04 - 04:19:08 | -5514 |
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 143707, (2018/10/26 04:07UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 22.16 19 Hamal 02:07:10.7 +23:27:42 2.0 13.38 20 48Eps Ari 02:59:12.7 +21:20:25 5.6 1.54 9 PPM 092164 03:02:27.5 +22:22:24 8.3 0.63 10 PPM 092189 03:04:35.5 +21:43:26 9.7 0.40 9 PPM 092200 03:05:33.4 +21:50:21 11.2 0.31 9 143707 03:04:56.4 +22:06:43 14.5 9 Positions are for J2000
Event circumstances last updated at 2018/05/24 18:06:16 UT
Marc W. Buie, Southwest Research Institute