Event between (471136) 10EO65 and star UC4-287-132021 with event index number of 329423
Geocentric closest approach at 2020/04/24 11:04:47 UTC
J2000 position of star is 17:51:21.4 -32:37:36
Equinox of date position of star is 17:52:37.7 -32:37:49
Stellar brightness R=15.8,
use SENSEUP=128
Star is 140 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=21.5
[RECON map]
TNO is 15.0 AU from the Sun
and 14.4 AU from the Earth.
The TNO is moving 8.8
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 1075 seconds.
The 1-sigma cross-track error in the shadow position is
1778 km.
The sky-plane scale is
10418.1 km/arcsec.
The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 8.6 sec chord
Diameter=31.0 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is CENTAURR
Star training set for 471136, (2020/04/24 11:05UT) Object RA Dec mag sep mel Antares 16:30:39.4 -26:28:31 0.9 18.83 159 34Ups Sco 17:32:08.8 -37:18:36 2.7 6.29 142 PPM 296839 17:50:29.7 -31:42:30 4.9 1.03 140 PPM 296883 17:52:23.3 -32:59:37 8.4 0.37 140 471136 17:52:41.2 -32:37:50 15.8 139 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
0.8 sigma about the mid-time.
The median site spacing is 12.9 km
RECON observability=0.3 and success probability=1.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Summerland | 11:02:38 | -15.2 | AT | Down | 7.4 | 172.4 | Really Low | 10:47:38 - 11:17:38 | 3848 |
| Kelowna | 11:02:35 | -14.9 | AT | Down | 7.1 | 172.7 | Really Low | 10:47:35 - 11:17:35 | 3848 |
| Penticton | 11:02:37 | -15.2 | AT | Down | 7.5 | 172.5 | Really Low | 10:47:37 - 11:17:37 | 3846 |
| Okanagan Falls | 11:02:37 | -15.3 | AT | Down | 7.7 | 172.5 | Really Low | 10:47:37 - 11:17:37 | 3844 |
| Oliver | 11:02:36 | -15.4 | AT | Down | 7.8 | 172.5 | Really Low | 10:47:36 - 11:17:36 | 3842 |
| Oroville | 11:02:37 | -15.5 | AT | Down | 8.1 | 172.6 | Really Low | 10:47:37 - 11:17:37 | 3837 |
| Anarchist Mountain Observatory | 11:02:35 | -15.5 | AT | Down | 8.0 | 172.7 | Really Low | 10:47:35 - 11:17:35 | 3837 |
| Tonasket | 11:02:37 | -15.7 | AT | Down | 8.3 | 172.6 | Really Low | 10:47:37 - 11:17:37 | 3834 |
| Manson/Chelan | 11:02:44 | -16.6 | AT | Down | 9.1 | 172.0 | Really Low | 10:47:44 - 11:17:44 | 3834 |
| Okanogan | 11:02:38 | -16.0 | AT | Down | 8.6 | 172.5 | Really Low | 10:47:38 - 11:17:38 | 3832 |
| Entiat | 11:02:46 | -16.8 | AT | Down | 9.3 | 172.0 | Really Low | 10:47:46 - 11:17:46 | 3831 |
| Brewster | 11:02:41 | -16.3 | AT | Down | 8.9 | 172.3 | Really Low | 10:47:41 - 11:17:41 | 3831 |
| Wenatchee | 11:02:47 | -17.0 | AT | Down | 9.5 | 171.9 | Really Low | 10:47:47 - 11:17:47 | 3829 |
| Ellensburg | 11:02:49 | -17.4 | AT | Down | 9.9 | 171.7 | Really Low | 10:47:49 - 11:17:49 | 3826 |
| Yakima | 11:02:51 | -17.7 | AT | Down | 10.3 | 171.7 | Really Low | 10:47:51 - 11:17:51 | 3819 |
| Toppenish/White Swan | 11:02:49 | -17.7 | AT | Down | 10.5 | 171.8 | Really Low | 10:47:49 - 11:17:49 | 3813 |
| The Dalles | 11:02:58 | -18.6 | Dark | Down | 11.2 | 171.1 | Really Low | 10:47:58 - 11:17:58 | 3811 |
| Goldendale | 11:02:54 | -18.3 | Dark | Down | 11.0 | 171.4 | Really Low | 10:47:54 - 11:17:54 | 3810 |
| Maupin | 11:02:57 | -18.9 | Dark | Down | 11.6 | 171.2 | Really Low | 10:47:57 - 11:17:57 | 3802 |
| Pasco | 11:02:39 | -17.2 | AT | Down | 10.8 | 172.8 | Really Low | 10:47:39 - 11:17:39 | 3792 |
| Madras/Culver | 11:02:59 | -19.3 | Dark | Down | 12.2 | 171.2 | Really Low | 10:47:59 - 11:17:59 | 3792 |
| Sisters | 11:03:04 | -19.7 | Dark | Down | 12.5 | 170.8 | Really Low | 10:48:04 - 11:18:04 | 3791 |
| George/Umatilla | 11:02:42 | -17.5 | AT | Down | 11.1 | 172.7 | Really Low | 10:47:42 - 11:17:42 | 3790 |
| Redmond | 11:03:00 | -19.5 | Dark | Down | 12.5 | 171.1 | Really Low | 10:48:00 - 11:18:00 | 3785 |
| PNWRO | 11:02:38 | -17.2 | AT | Down | 11.0 | 173.0 | Really Low | 10:47:38 - 11:17:38 | 3784 |
| Bend | 11:03:02 | -19.8 | Dark | Down | 12.7 | 171.0 | Really Low | 10:48:02 - 11:18:02 | 3783 |
| Oregon Observatory | 11:03:03 | -19.9 | Dark | Down | 12.9 | 170.9 | Really Low | 10:48:03 - 11:18:03 | 3781 |
| La Pine/Gilchrist | 11:03:06 | -20.1 | Dark | Down | 13.1 | 170.8 | Really Low | 10:48:06 - 11:18:06 | 3777 |
| North Lake | 11:03:00 | -20.1 | Dark | Down | 13.6 | 171.3 | Really Low | 10:48:00 - 11:18:00 | 3759 |
| Chiloquin | 11:03:10 | -21.0 | Dark | Down | 14.1 | 170.5 | Really Low | 10:48:10 - 11:18:10 | 3757 |
| Klamath Falls | 11:03:10 | -21.2 | Dark | Down | 14.5 | 170.5 | Really Low | 10:48:10 - 11:18:10 | 3747 |
| Paisley | 11:02:59 | -20.3 | Dark | Down | 14.2 | 171.6 | Really Low | 10:47:59 - 11:17:59 | 3740 |
| Tulelake | 11:03:08 | -21.3 | Dark | Down | 14.8 | 170.8 | Really Low | 10:48:08 - 11:18:08 | 3736 |
| Lakeview | 11:02:59 | -20.5 | Dark | Down | 14.7 | 171.7 | Really Low | 10:47:59 - 11:17:59 | 3725 |
| Fall River/Burney | 11:03:10 | -21.8 | Dark | Down | 15.7 | 170.8 | Really Low | 10:48:10 - 11:18:10 | 3712 |
| Cedarville | 11:02:59 | -20.8 | Dark | Down | 15.3 | 171.9 | Really Low | 10:47:59 - 11:17:59 | 3705 |
| Susanville | 11:03:06 | -21.8 | Dark | Down | 16.4 | 171.4 | Really Low | 10:48:06 - 11:18:06 | 3683 |
| Greenville | 11:03:08 | -22.2 | Dark | Down | 16.6 | 171.2 | Really Low | 10:48:08 - 11:18:08 | 3680 |
| Gimple | 11:03:08 | -22.1 | Dark | Down | 16.7 | 171.2 | Really Low | 10:48:08 - 11:18:08 | 3678 |
| Quincy | 11:03:09 | -22.3 | Dark | Down | 16.8 | 171.2 | Really Low | 10:48:09 - 11:18:09 | 3674 |
| Portola | 11:03:04 | -22.1 | Dark | Down | 17.0 | 171.6 | Really Low | 10:48:04 - 11:18:04 | 3663 |
| Reno | 11:02:59 | -21.9 | Dark | Down | 17.4 | 172.1 | Really Low | 10:47:59 - 11:17:59 | 3644 |
| Carson City | 11:03:01 | -22.2 | Dark | Down | 17.7 | 172.1 | Really Low | 10:48:01 - 11:18:01 | 3633 |
| Gardnerville | 11:03:00 | -22.3 | Dark | Down | 18.0 | 172.1 | Really Low | 10:48:00 - 11:18:00 | 3624 |
| Yerington | 11:02:55 | -21.9 | Dark | Down | 18.0 | 172.6 | Really Low | 10:47:55 - 11:17:55 | 3616 |
| Hawthorne | 11:02:52 | -21.9 | Dark | Down | 18.5 | 173.1 | Really Low | 10:47:52 - 11:17:52 | 3592 |
| Lee Vining | 11:02:57 | -22.5 | Dark | Down | 19.0 | 172.6 | Really Low | 10:47:57 - 11:17:57 | 3582 |
| Tonopah | 11:02:39 | -21.4 | Dark | Down | 19.1 | 174.3 | Really Low | 10:47:39 - 11:17:39 | 3550 |
| Bishop | 11:02:52 | -22.5 | Dark | Down | 19.7 | 173.2 | Really Low | 10:47:52 - 11:17:52 | 3549 |
| Lone Pine | 11:02:51 | -22.7 | Dark | Down | 20.4 | 173.5 | Low | 10:47:51 - 11:17:51 | 3516 |
| CPSLO | 11:03:18 | -25.1 | Dark | Down | 21.5 | 171.2 | Low | 10:48:18 - 11:18:18 | 3516 |
| Beatty | 11:02:37 | -21.8 | Dark | Down | 20.2 | 174.6 | Low | 10:47:37 - 11:17:37 | 3502 |
| Indian Springs | 11:02:29 | -21.3 | Dark | Down | 20.6 | 175.5 | Low | 10:47:29 - 11:17:29 | 3468 |
| Henderson | 11:02:23 | -21.2 | Dark | Down | 21.2 | 176.1 | Low | 10:47:23 - 11:17:23 | 3434 |
| Wildwood | 11:03:01 | -24.6 | Dark | Down | 22.9 | 172.9 | Low | 10:48:01 - 11:18:01 | 3432 |
| Searchlight/Boulder City | 11:02:24 | -21.5 | Dark | Down | 21.8 | 176.2 | Low | 10:47:24 - 11:17:24 | 3411 |
| Laughlin/Bullhead City | 11:02:21 | -21.4 | Dark | Down | 22.1 | 176.5 | Low | 10:47:21 - 11:17:21 | 3392 |
| Patrick | 11:02:13 | -20.8 | Dark | Down | 21.9 | 177.1 | Low | 10:47:13 - 11:17:13 | 3386 |
| Kingman/Dolan Springs | 11:02:16 | -21.1 | Dark | Down | 22.1 | 176.9 | Low | 10:47:16 - 11:17:16 | 3381 |
| Mohave Valley | 11:02:21 | -21.6 | Dark | Down | 22.4 | 176.5 | Low | 10:47:21 - 11:17:21 | 3381 |
| Idyllwild | 11:02:44 | -23.6 | Dark | Down | 23.4 | 174.6 | Low | 10:47:44 - 11:17:44 | 3380 |
| Lake Havasu City | 11:02:19 | -21.6 | Dark | Down | 22.8 | 176.7 | Low | 10:47:19 - 11:17:19 | 3360 |
| DCO | 11:02:07 | -20.5 | Dark | Down | 22.2 | 177.7 | Low | 10:47:07 - 11:17:07 | 3358 |
| Parker | 11:02:20 | -21.8 | Dark | Down | 23.1 | 176.7 | Low | 10:47:20 - 11:17:20 | 3345 |
| Niwot | 11:00:49 | -12.7 | AT | Down | 17.1 | 184.5 | Really Low | 10:45:49 - 11:15:49 | 3338 |
| SwRI | 11:00:49 | -12.9 | AT | Down | 17.2 | 184.4 | Really Low | 10:45:49 - 11:15:49 | 3337 |
| Blythe | 11:02:23 | -22.3 | Dark | Down | 23.7 | 176.4 | Low | 10:47:23 - 11:17:23 | 3330 |
| Calipatria | 11:02:33 | -23.2 | Dark | Down | 24.1 | 175.6 | Low | 10:47:33 - 11:17:33 | 3330 |
| Yuma | 11:02:25 | -22.8 | Dark | Down | 24.6 | 176.4 | Low | 10:47:25 - 11:17:25 | 3291 |
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 471136, (2020/04/24 11:05UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 18.83 159 34Ups Sco 17:30:45.8 -37:17:46 2.7 6.29 142 PPM 296839 17:49:10.5 -31:42:12 4.9 1.03 140 PPM 296883 17:51:03.2 -32:59:22 8.4 0.37 140 471136 17:51:21.4 -32:37:36 15.8 140 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:30:44 UT
Marc W. Buie, Southwest Research Institute