Event between (310071) 10KR59 and star UC4-383-067675 with event index number of 114554
Geocentric closest approach at 2018/04/26 11:23:46 UTC
J2000 position of star is 14:40:20.4 -13:29:50
Equinox of date position of star is 14:41:20.1 -13:34:28
Stellar brightness R=17.0,
use SENSEUP=128
Star is 50 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=19.7
[RECON map]
TNO is 16.5 AU from the Sun
and 15.5 AU from the Earth.
The TNO is moving 21.9
km/sec on the sky relative to the star, or,
7.0 arcsec/hr.
The 1-sigma error in the time of the event is 66 seconds.
The 1-sigma cross-track error in the shadow position is
1194 km.
The sky-plane scale is
11273.8 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=182.0 km assuming a 5% albedo -- 8.3 sec chord
Diameter=74.3 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CENTAURR
Star training set for 310071, (2018/04/26 11:24UT) Object RA Dec mag sep mel Spica 13:26:09.6 -11:15:23 1.0 18.50 32 27Bet Lib 15:17:59.7 -09:26:58 2.6 9.88 57 PPM 229046 14:37:58.4 -12:22:57 6.2 1.45 49 PPM 229140 14:42:19.1 -14:00:22 8.5 0.49 50 PPM 229092 14:40:17.3 -13:45:49 9.5 0.32 50 310071 14:41:20.5 -13:34:30 17.0 50 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 14.8 km
RECON observability=0.7 and success probability=1.0%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Oroville | 11:22:19 | -12.6 | AT | Up | 15.8 | 226.1 | Really Low | 11:16:20 - 11:28:17 | 4704 |
Tonasket | 11:22:18 | -12.8 | AT | Up | 15.9 | 226.1 | Really Low | 11:16:19 - 11:28:16 | 4694 |
Okanogan | 11:22:17 | -13.1 | AT | Up | 16.3 | 226.1 | Really Low | 11:16:19 - 11:28:16 | 4679 |
Brewster | 11:22:17 | -13.3 | AT | Up | 16.5 | 225.9 | Really Low | 11:16:19 - 11:28:16 | 4666 |
Manson/Chelan | 11:22:17 | -13.7 | AT | Up | 16.9 | 225.7 | Really Low | 11:16:19 - 11:28:16 | 4657 |
Entiat | 11:22:17 | -13.8 | AT | Up | 17.0 | 225.6 | Really Low | 11:16:18 - 11:28:15 | 4647 |
Wenatchee | 11:22:16 | -14.1 | AT | Up | 17.3 | 225.6 | Really Low | 11:16:18 - 11:28:15 | 4635 |
Ellensburg | 11:22:15 | -14.4 | AT | Up | 17.7 | 225.5 | Really Low | 11:16:17 - 11:28:14 | 4616 |
Yakima | 11:22:15 | -14.7 | AT | Up | 18.0 | 225.6 | Really Low | 11:16:16 - 11:28:13 | 4596 |
Toppenish/White Swan | 11:22:13 | -14.8 | AT | Up | 18.0 | 225.8 | Really Low | 11:16:15 - 11:28:12 | 4585 |
Pasco | 11:22:10 | -14.2 | AT | Up | 17.5 | 226.9 | Really Low | 11:16:11 - 11:28:08 | 4576 |
PNWRO | 11:22:08 | -14.2 | AT | Up | 17.5 | 227.2 | Really Low | 11:16:10 - 11:28:07 | 4563 |
George/Umatilla | 11:22:09 | -14.5 | AT | Up | 17.8 | 226.8 | Really Low | 11:16:11 - 11:28:08 | 4560 |
Goldendale | 11:22:13 | -15.3 | AT | Up | 18.6 | 225.5 | Really Low | 11:16:14 - 11:28:11 | 4559 |
The Dalles | 11:22:13 | -15.7 | AT | Up | 19.0 | 225.3 | Really Low | 11:16:14 - 11:28:11 | 4548 |
Maupin | 11:22:11 | -15.9 | AT | Up | 19.2 | 225.5 | Really Low | 11:16:13 - 11:28:10 | 4526 |
Madras/Culver | 11:22:10 | -16.3 | AT | Up | 19.6 | 225.6 | Really Low | 11:16:11 - 11:28:08 | 4498 |
Sisters | 11:22:10 | -16.7 | AT | Up | 20.1 | 225.2 | Low | 11:16:12 - 11:28:09 | 4481 |
Redmond | 11:22:09 | -16.5 | AT | Up | 19.9 | 225.6 | Really Low | 11:16:10 - 11:28:07 | 4479 |
Bend | 11:22:09 | -16.7 | AT | Up | 20.1 | 225.5 | Low | 11:16:10 - 11:28:07 | 4468 |
Oregon Observatory | 11:22:08 | -16.9 | AT | Up | 20.3 | 225.5 | Low | 11:16:10 - 11:28:07 | 4459 |
La Pine/Gilchrist | 11:22:08 | -17.1 | AT | Up | 20.5 | 225.5 | Low | 11:16:09 - 11:28:06 | 4448 |
North Lake | 11:22:05 | -17.0 | AT | Up | 20.5 | 226.1 | Low | 11:16:07 - 11:28:04 | 4424 |
Paisley | 11:22:03 | -17.2 | AT | Up | 20.7 | 226.5 | Low | 11:16:04 - 11:28:01 | 4392 |
Chiloquin | 11:22:06 | -18.0 | AT | Up | 21.5 | 225.4 | Low | 11:16:08 - 11:28:05 | 4388 |
Klamath Falls | 11:22:05 | -18.2 | Dark | Up | 21.7 | 225.6 | Low | 11:16:06 - 11:28:03 | 4368 |
Lakeview | 11:22:01 | -17.4 | AT | Up | 20.9 | 226.8 | Low | 11:16:02 - 11:27:59 | 4364 |
Tulelake | 11:22:03 | -18.2 | Dark | Up | 21.7 | 225.9 | Low | 11:16:05 - 11:28:02 | 4353 |
Cedarville | 11:21:59 | -17.7 | AT | Up | 21.3 | 227.2 | Low | 11:16:00 - 11:27:57 | 4326 |
Fall River/Burney | 11:22:00 | -18.7 | Dark | Up | 22.3 | 226.3 | Low | 11:16:02 - 11:27:59 | 4300 |
Susanville | 11:21:57 | -18.6 | Dark | Up | 22.3 | 227.1 | Low | 11:15:58 - 11:27:55 | 4262 |
Greenville | 11:21:57 | -19.0 | Dark | Up | 22.7 | 226.9 | Low | 11:15:58 - 11:27:55 | 4246 |
Gimple | 11:21:57 | -18.9 | Dark | Up | 22.6 | 227.0 | Low | 11:15:58 - 11:27:55 | 4245 |
Quincy | 11:21:56 | -19.1 | Dark | Up | 22.8 | 227.0 | Low | 11:15:57 - 11:27:54 | 4234 |
Portola | 11:21:54 | -18.9 | Dark | Up | 22.6 | 227.4 | Low | 11:15:56 - 11:27:53 | 4225 |
Reno | 11:21:52 | -18.7 | Dark | Up | 22.4 | 228.0 | Low | 11:15:53 - 11:27:50 | 4207 |
Carson City | 11:21:51 | -18.9 | Dark | Up | 22.7 | 228.2 | Low | 11:15:52 - 11:27:49 | 4185 |
Yerington | 11:21:48 | -18.6 | Dark | Up | 22.4 | 228.8 | Low | 11:15:50 - 11:27:47 | 4172 |
Gardnerville | 11:21:50 | -19.0 | Dark | Up | 22.8 | 228.3 | Low | 11:15:51 - 11:27:48 | 4170 |
Niwot | 11:21:17 | -8.9 | CT | Down | 13.1 | 239.3 | Really Low | 11:15:19 - 11:27:16 | 4160 |
Hawthorne | 11:21:46 | -18.6 | Dark | Up | 22.4 | 229.3 | Low | 11:15:47 - 11:27:44 | 4141 |
Lee Vining | 11:21:45 | -19.2 | Dark | Up | 23.1 | 229.1 | Low | 11:15:47 - 11:27:44 | 4107 |
Tonopah | 11:21:40 | -17.9 | AT | Up | 21.9 | 230.6 | Low | 11:15:42 - 11:27:39 | 4107 |
Bishop | 11:21:42 | -19.1 | Dark | Up | 23.1 | 229.9 | Low | 11:15:43 - 11:27:40 | 4067 |
Beatty | 11:21:35 | -18.3 | Dark | Up | 22.4 | 231.4 | Low | 11:15:37 - 11:27:34 | 4031 |
Lone Pine | 11:21:39 | -19.3 | Dark | Up | 23.4 | 230.4 | Low | 11:15:40 - 11:27:37 | 4016 |
Indian Springs | 11:21:32 | -17.8 | AT | Down | 21.9 | 232.3 | Low | 11:15:33 - 11:27:30 | 4005 |
Henderson | 11:21:29 | -17.6 | AT | Down | 21.8 | 233.0 | Low | 11:15:30 - 11:27:27 | 3967 |
CPSLO | 11:21:42 | -21.8 | Dark | Up | 25.8 | 228.7 | Low | 11:15:44 - 11:27:41 | 3937 |
Searchlight/Boulder City | 11:21:27 | -17.9 | AT | Down | 22.1 | 233.2 | Low | 11:15:28 - 11:27:25 | 3928 |
Patrick | 11:21:24 | -17.2 | AT | Down | 21.4 | 234.1 | Low | 11:15:25 - 11:27:22 | 3919 |
Laughlin/Bullhead City | 11:21:25 | -17.8 | AT | Down | 22.0 | 233.6 | Low | 11:15:26 - 11:27:23 | 3906 |
Kingman/Dolan Springs | 11:21:24 | -17.4 | AT | Down | 21.7 | 234.0 | Low | 11:15:25 - 11:27:22 | 3905 |
DCO | 11:21:21 | -16.8 | AT | Down | 21.2 | 234.7 | Low | 11:15:22 - 11:27:19 | 3895 |
Mohave Valley | 11:21:24 | -17.9 | AT | Down | 22.2 | 233.7 | Low | 11:15:26 - 11:27:23 | 3888 |
Lake Havasu City | 11:21:22 | -18.0 | AT | Down | 22.3 | 234.0 | Low | 11:15:24 - 11:27:21 | 3859 |
Wildwood | 11:21:33 | -21.1 | Dark | Up | 25.3 | 230.8 | Low | 11:15:35 - 11:27:32 | 3849 |
Parker | 11:21:21 | -18.1 | Dark | Down | 22.5 | 234.2 | Low | 11:15:23 - 11:27:20 | 3834 |
Idyllwild | 11:21:27 | -20.0 | Dark | Up | 24.3 | 232.4 | Low | 11:15:29 - 11:27:26 | 3817 |
Blythe | 11:21:21 | -18.6 | Dark | Down | 23.0 | 234.1 | Low | 11:15:22 - 11:27:19 | 3799 |
Calipatria | 11:21:22 | -19.5 | Dark | Down | 23.9 | 233.6 | Low | 11:15:23 - 11:27:20 | 3769 |
Yuma | 11:21:18 | -19.1 | Dark | Down | 23.6 | 234.4 | Low | 11:15:19 - 11:27:16 | 3734 |
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 310071, (2018/04/26 11:24UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 18.50 32 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.88 57 PPM 229046 14:36:58.7 -12:18:13 6.2 1.45 49 PPM 229140 14:41:18.9 -13:55:43 8.5 0.49 50 PPM 229092 14:39:17.1 -13:41:07 9.5 0.32 50 310071 14:40:20.4 -13:29:50 17.0 50 Positions are for J2000
Event circumstances last updated at 2018/03/08 17:20:12 UT
Marc W. Buie, Southwest Research Institute