Event between (523644) 10VX11 and star GA0880:00620551 with event index number of 325917
Geocentric closest approach at 2019/12/17 04:54:48 UTC
J2000 position of star is 05:20:31.9 -00:00:02
Equinox of date position of star is 05:21:31.6 +00:01:04
Stellar brightness G=15.8,
use SENSEUP=128
Star is 73 degrees from the moon.
Moon is 72% illuminated.
TNO apparent brightness V=21.0
[RECON map]
TNO is 28.7 AU from the Sun
and 27.8 AU from the Earth.
The TNO is moving 23.9
km/sec on the sky relative to the star, or,
4.3 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is
1021 km.
The sky-plane scale is
20160.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 13.2 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 523644, (2019/12/17 04:55UT) Object RA Dec mag sep mel Rigel 05:15:29.9 -08:10:48 0.1 8.34 77 34Del Ori 05:33:01.6 -00:17:09 2.2 2.88 70 PPM 175816 05:24:43.6 -00:08:34 5.3 0.81 72 PPM 175791 05:19:02.3 -00:01:03 7.4 0.63 73 PPM 148754 05:20:26.8 +00:23:10 9.9 0.46 73 PPM 175803 05:22:27.5 -00:09:16 10.3 0.28 73 523644 05:21:33.2 +00:01:06 15.8 73 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 16.8 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 04:56:34 | -46.6 | Dark | Down | 29.6 | 132.5 | Low | 04:48:37 - 05:04:30 | 6221 |
| Summerland | 04:56:35 | -46.6 | Dark | Down | 29.7 | 132.1 | Low | 04:48:39 - 05:04:32 | 6200 |
| Penticton | 04:56:35 | -46.7 | Dark | Down | 29.8 | 132.2 | Low | 04:48:38 - 05:04:31 | 6196 |
| Okanagan Falls | 04:56:36 | -46.7 | Dark | Down | 29.9 | 132.1 | Low | 04:48:39 - 05:04:32 | 6182 |
| Oliver | 04:56:36 | -46.8 | Dark | Down | 30.0 | 132.0 | Up | 04:48:39 - 05:04:32 | 6171 |
| Anarchist Mountain Observatory | 04:56:36 | -47.0 | Dark | Down | 30.3 | 132.2 | Up | 04:48:39 - 05:04:32 | 6158 |
| Oroville | 04:56:36 | -47.0 | Dark | Down | 30.3 | 132.1 | Up | 04:48:39 - 05:04:32 | 6153 |
| Tonasket | 04:56:36 | -47.0 | Dark | Down | 30.4 | 132.0 | Up | 04:48:40 - 05:04:33 | 6136 |
| Okanogan | 04:56:38 | -47.1 | Dark | Down | 30.6 | 131.7 | Up | 04:48:41 - 05:04:34 | 6112 |
| Brewster | 04:56:39 | -47.0 | Dark | Down | 30.7 | 131.4 | Up | 04:48:42 - 05:04:35 | 6093 |
| Manson/Chelan | 04:56:40 | -46.9 | Dark | Down | 30.6 | 130.9 | Up | 04:48:44 - 05:04:37 | 6078 |
| Entiat | 04:56:41 | -46.9 | Dark | Down | 30.7 | 130.7 | Up | 04:48:44 - 05:04:37 | 6062 |
| Wenatchee | 04:56:42 | -46.9 | Dark | Down | 30.8 | 130.5 | Up | 04:48:45 - 05:04:38 | 6043 |
| Ellensburg | 04:56:43 | -46.9 | Dark | Down | 31.0 | 130.1 | Up | 04:48:46 - 05:04:39 | 6013 |
| Yakima | 04:56:44 | -47.0 | Dark | Down | 31.3 | 129.9 | Up | 04:48:48 - 05:04:41 | 5982 |
| Toppenish/White Swan | 04:56:45 | -47.2 | Dark | Down | 31.5 | 130.0 | Up | 04:48:48 - 05:04:41 | 5966 |
| Pasco | 04:56:41 | -48.1 | Dark | Down | 32.2 | 131.2 | Up | 04:48:45 - 05:04:38 | 5955 |
| PNWRO | 04:56:41 | -48.3 | Dark | Down | 32.5 | 131.3 | Up | 04:48:45 - 05:04:38 | 5936 |
| George/Umatilla | 04:56:43 | -48.0 | Dark | Down | 32.3 | 130.8 | Up | 04:48:46 - 05:04:39 | 5930 |
| Goldendale | 04:56:47 | -47.1 | Dark | Down | 31.6 | 129.3 | Up | 04:48:50 - 05:04:43 | 5925 |
| The Dalles | 04:56:48 | -46.9 | Dark | Down | 31.6 | 128.8 | Up | 04:48:52 - 05:04:45 | 5908 |
| Maupin | 04:56:49 | -47.1 | Dark | Down | 31.9 | 128.7 | Up | 04:48:52 - 05:04:45 | 5876 |
| Madras/Culver | 04:56:50 | -47.2 | Dark | Down | 32.2 | 128.4 | Up | 04:48:54 - 05:04:47 | 5833 |
| Sisters | 04:56:52 | -46.9 | Dark | Down | 32.2 | 127.8 | Up | 04:48:56 - 05:04:49 | 5808 |
| Redmond | 04:56:51 | -47.2 | Dark | Down | 32.4 | 128.2 | Up | 04:48:55 - 05:04:48 | 5806 |
| Bend | 04:56:52 | -47.2 | Dark | Down | 32.5 | 128.0 | Up | 04:48:55 - 05:04:48 | 5789 |
| Oregon Observatory | 04:56:53 | -47.1 | Dark | Down | 32.5 | 127.8 | Up | 04:48:56 - 05:04:49 | 5776 |
| La Pine/Gilchrist | 04:56:53 | -47.1 | Dark | Down | 32.6 | 127.6 | Up | 04:48:57 - 05:04:50 | 5760 |
| North Lake | 04:56:52 | -47.7 | Dark | Down | 33.2 | 128.0 | Up | 04:48:56 - 05:04:49 | 5724 |
| Paisley | 04:56:53 | -48.0 | Dark | Down | 33.7 | 128.0 | Up | 04:48:56 - 05:04:49 | 5679 |
| Chiloquin | 04:56:56 | -47.1 | Dark | Down | 33.1 | 126.7 | Up | 04:49:00 - 05:04:53 | 5671 |
| Klamath Falls | 04:56:57 | -47.3 | Dark | Down | 33.3 | 126.6 | Up | 04:49:00 - 05:04:53 | 5644 |
| Lakeview | 04:56:53 | -48.3 | Dark | Down | 34.2 | 128.0 | Up | 04:48:57 - 05:04:50 | 5638 |
| Tulelake | 04:56:57 | -47.5 | Dark | Down | 33.6 | 126.8 | Up | 04:49:00 - 05:04:53 | 5621 |
| Cedarville | 04:56:54 | -48.6 | Dark | Down | 34.7 | 127.8 | Up | 04:48:58 - 05:04:51 | 5584 |
| Fall River/Burney | 04:56:58 | -47.8 | Dark | Down | 34.2 | 126.3 | Up | 04:49:02 - 05:04:55 | 5547 |
| Susanville | 04:56:58 | -48.4 | Dark | Down | 35.1 | 126.7 | Up | 04:49:01 - 05:04:54 | 5493 |
| Greenville | 04:56:59 | -48.3 | Dark | Down | 35.1 | 126.3 | Up | 04:49:03 - 05:04:56 | 5471 |
| Gimple | 04:56:59 | -48.3 | Dark | Down | 35.1 | 126.4 | Up | 04:49:03 - 05:04:56 | 5470 |
| Quincy | 04:56:59 | -48.3 | Dark | Down | 35.2 | 126.2 | Up | 04:49:03 - 05:04:56 | 5454 |
| Portola | 04:56:59 | -48.7 | Dark | Down | 35.5 | 126.5 | Up | 04:49:02 - 05:04:55 | 5442 |
| Niwot | 04:56:13 | -59.7 | Dark | Up | 43.6 | 143.2 | Up | 04:48:17 - 05:04:10 | 5439 |
| SwRI | 04:56:14 | -59.6 | Dark | Up | 43.6 | 143.1 | Up | 04:48:17 - 05:04:10 | 5431 |
| Reno | 04:56:57 | -49.2 | Dark | Down | 36.1 | 127.0 | Up | 04:49:01 - 05:04:54 | 5419 |
| Carson City | 04:56:58 | -49.3 | Dark | Down | 36.3 | 126.8 | Up | 04:49:02 - 05:04:55 | 5388 |
| Yerington | 04:56:57 | -49.8 | Dark | Down | 36.8 | 127.3 | Up | 04:49:00 - 05:04:53 | 5371 |
| Gardnerville | 04:56:58 | -49.4 | Dark | Down | 36.5 | 126.7 | Up | 04:49:02 - 05:04:55 | 5367 |
| Hawthorne | 04:56:56 | -50.3 | Dark | Down | 37.4 | 127.6 | Up | 04:49:00 - 05:04:53 | 5330 |
| Tonopah | 04:56:53 | -51.4 | Dark | Down | 38.6 | 128.7 | Up | 04:48:57 - 05:04:50 | 5287 |
| Lee Vining | 04:56:59 | -50.0 | Dark | Down | 37.5 | 126.8 | Up | 04:49:02 - 05:04:55 | 5282 |
| Bishop | 04:56:58 | -50.7 | Dark | Down | 38.3 | 127.1 | Up | 04:49:01 - 05:04:54 | 5229 |
| Beatty | 04:56:54 | -52.0 | Dark | Down | 39.6 | 128.4 | Up | 04:48:57 - 05:04:50 | 5186 |
| Lone Pine | 04:56:58 | -51.0 | Dark | Down | 39.0 | 126.9 | Up | 04:49:01 - 05:04:54 | 5162 |
| Indian Springs | 04:56:51 | -52.9 | Dark | Down | 40.5 | 129.3 | Up | 04:48:55 - 05:04:48 | 5155 |
| Henderson | 04:56:50 | -53.5 | Dark | Down | 41.3 | 129.7 | Up | 04:48:54 - 05:04:47 | 5106 |
| Searchlight/Boulder City | 04:56:51 | -53.7 | Dark | Down | 41.7 | 129.3 | Up | 04:48:54 - 05:04:47 | 5055 |
| CPSLO | 04:57:08 | -49.1 | Dark | Down | 38.0 | 123.6 | Up | 04:49:11 - 05:05:04 | 5051 |
| Patrick | 04:56:48 | -54.5 | Dark | Down | 42.3 | 130.4 | Up | 04:48:51 - 05:04:44 | 5048 |
| Kingman/Dolan Springs | 04:56:49 | -54.4 | Dark | Down | 42.4 | 130.0 | Up | 04:48:52 - 05:04:45 | 5029 |
| Laughlin/Bullhead City | 04:56:50 | -54.0 | Dark | Down | 42.1 | 129.5 | Up | 04:48:54 - 05:04:47 | 5028 |
| DCO | 04:56:46 | -55.1 | Dark | Down | 43.0 | 130.9 | Up | 04:48:49 - 05:04:42 | 5020 |
| Mohave Valley | 04:56:51 | -54.0 | Dark | Down | 42.2 | 129.3 | Up | 04:48:54 - 05:04:47 | 5003 |
| Lake Havasu City | 04:56:50 | -54.3 | Dark | Down | 42.7 | 129.3 | Up | 04:48:54 - 05:04:47 | 4967 |
| Wildwood | 04:57:04 | -50.9 | Dark | Down | 40.1 | 124.8 | Up | 04:49:07 - 05:05:00 | 4938 |
| Parker | 04:56:51 | -54.4 | Dark | Down | 42.9 | 129.1 | Up | 04:48:54 - 05:04:47 | 4935 |
| Idyllwild | 04:56:59 | -52.4 | Dark | Down | 41.6 | 126.3 | Up | 04:49:02 - 05:04:55 | 4902 |
| Blythe | 04:56:53 | -54.2 | Dark | Down | 43.0 | 128.4 | Up | 04:48:56 - 05:04:49 | 4887 |
| Calipatria | 04:56:56 | -53.5 | Dark | Down | 42.7 | 127.1 | Up | 04:49:00 - 05:04:53 | 4844 |
| Yuma | 04:56:54 | -54.2 | Dark | Down | 43.6 | 127.7 | Up | 04:48:58 - 05:04:51 | 4802 |
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 523644, (2019/12/17 04:55UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 8.34 77 34Del Ori 05:32:00.4 -00:17:57 2.2 2.88 70 PPM 175816 05:23:42.3 -00:09:36 5.3 0.81 72 PPM 175791 05:18:00.9 -00:02:15 7.4 0.63 73 PPM 148754 05:19:25.3 +00:22:01 9.9 0.46 73 PPM 175803 05:21:26.2 -00:10:23 10.3 0.28 73 523644 05:20:31.9 -00:00:02 15.8 73 Positions are for J2000
Event circumstances last updated at 2019/06/07 23:01:51 UT
Marc W. Buie, Southwest Research Institute