Event between (523640) 10RO64 and star UC4-443-002036 with event index number of 309175
Geocentric closest approach at 2019/10/18 04:16:16 UTC
J2000 position of star is 01:39:45.7 -01:27:21
Equinox of date position of star is 01:40:43.3 -01:21:39
Stellar brightness R=16.4,
use SENSEUP=128
Star is 51 degrees from the moon.
Moon is 83% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 41.2 AU from the Sun
and 40.2 AU from the Earth.
The TNO is moving 25.1
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 76 seconds.
The 1-sigma cross-track error in the shadow position is
1759 km.
The sky-plane scale is
29176.8 km/arcsec.
The TNO has an absolute magnitude Hv=5.2
Diameter=549.6 km assuming a 5% albedo -- 21.9 sec chord
Diameter=224.4 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 523640, (2019/10/18 04:16UT) Object RA Dec mag sep mel Fomalhaut 22:58:44.4 -29:31:01 1.2 47.69 98 68Omi Cet 02:20:20.9 -02:53:19 2.0 10.01 44 PPM 183660 01:38:52.3 -03:20:26 6.5 2.04 53 PPM 174965 01:43:25.9 -00:56:15 8.3 0.79 51 PPM 174951 01:40:13.0 -01:28:53 9.5 0.19 52 523640 01:40:46.3 -01:21:21 16.4 51 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 12.3 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) |
| Summerland | 04:17:22 | -31.3 | Dark | Up | 21.1 | 119.9 | Low | 04:10:32 - 04:24:12 | 10991 |
| Kelowna | 04:17:21 | -31.5 | Dark | Up | 21.3 | 120.3 | Low | 04:10:31 - 04:24:11 | 10988 |
| Penticton | 04:17:22 | -31.6 | Dark | Up | 21.3 | 120.0 | Low | 04:10:32 - 04:24:12 | 10974 |
| Okanagan Falls | 04:17:23 | -31.7 | Dark | Up | 21.4 | 119.9 | Low | 04:10:33 - 04:24:13 | 10965 |
| Oliver | 04:17:24 | -31.7 | Dark | Up | 21.5 | 119.9 | Low | 04:10:34 - 04:24:14 | 10957 |
| Anarchist Mountain Observatory | 04:17:24 | -31.9 | Dark | Up | 21.7 | 120.0 | Low | 04:10:34 - 04:24:14 | 10947 |
| Oroville | 04:17:24 | -31.9 | Dark | Up | 21.7 | 119.9 | Low | 04:10:34 - 04:24:14 | 10944 |
| Tonasket | 04:17:25 | -32.0 | Dark | Up | 21.8 | 119.8 | Low | 04:10:35 - 04:24:15 | 10933 |
| Okanogan | 04:17:25 | -32.1 | Dark | Up | 21.9 | 119.6 | Low | 04:10:35 - 04:24:15 | 10919 |
| Brewster | 04:17:25 | -32.0 | Dark | Up | 21.9 | 119.3 | Low | 04:10:35 - 04:24:15 | 10909 |
| Manson/Chelan | 04:17:25 | -31.9 | Dark | Up | 21.8 | 118.9 | Low | 04:10:35 - 04:24:15 | 10903 |
| Entiat | 04:17:25 | -31.9 | Dark | Up | 21.9 | 118.8 | Low | 04:10:35 - 04:24:15 | 10894 |
| Wenatchee | 04:17:25 | -32.0 | Dark | Up | 21.9 | 118.6 | Low | 04:10:35 - 04:24:15 | 10883 |
| Ellensburg | 04:17:25 | -32.0 | Dark | Up | 22.0 | 118.3 | Low | 04:10:35 - 04:24:15 | 10866 |
| Yakima | 04:17:25 | -32.2 | Dark | Up | 22.2 | 118.1 | Low | 04:10:35 - 04:24:15 | 10846 |
| Toppenish/White Swan | 04:17:25 | -32.3 | Dark | Up | 22.4 | 118.2 | Low | 04:10:35 - 04:24:15 | 10833 |
| Goldendale | 04:17:25 | -32.3 | Dark | Up | 22.4 | 117.6 | Low | 04:10:35 - 04:24:15 | 10812 |
| Pasco | 04:17:25 | -33.2 | Dark | Up | 23.2 | 119.2 | Low | 04:10:35 - 04:24:15 | 10810 |
| The Dalles | 04:17:25 | -32.1 | Dark | Up | 22.3 | 117.2 | Low | 04:10:35 - 04:24:15 | 10806 |
| George/Umatilla | 04:17:25 | -33.2 | Dark | Up | 23.3 | 118.9 | Low | 04:10:35 - 04:24:15 | 10796 |
| PNWRO | 04:17:25 | -33.4 | Dark | Up | 23.5 | 119.3 | Low | 04:10:35 - 04:24:15 | 10794 |
| Maupin | 04:17:25 | -32.3 | Dark | Up | 22.5 | 117.2 | Low | 04:10:35 - 04:24:15 | 10784 |
| Madras/Culver | 04:17:25 | -32.5 | Dark | Up | 22.8 | 116.9 | Low | 04:10:35 - 04:24:15 | 10757 |
| Redmond | 04:17:25 | -32.6 | Dark | Up | 22.9 | 116.7 | Low | 04:10:35 - 04:24:15 | 10739 |
| Sisters | 04:17:44 | -32.4 | Dark | Up | 22.7 | 116.5 | Low | 04:10:54 - 04:24:34 | 10735 |
| Bend | 04:17:44 | -32.6 | Dark | Up | 22.9 | 116.6 | Low | 04:10:54 - 04:24:34 | 10719 |
| Oregon Observatory | 04:17:45 | -32.6 | Dark | Up | 22.9 | 116.4 | Low | 04:10:55 - 04:24:35 | 10711 |
| La Pine/Gilchrist | 04:17:46 | -32.6 | Dark | Up | 23.0 | 116.3 | Low | 04:10:56 - 04:24:36 | 10700 |
| North Lake | 04:17:47 | -33.2 | Dark | Up | 23.6 | 116.7 | Low | 04:10:57 - 04:24:37 | 10668 |
| Chiloquin | 04:17:51 | -32.8 | Dark | Up | 23.3 | 115.6 | Low | 04:11:01 - 04:24:41 | 10642 |
| Paisley | 04:17:47 | -33.6 | Dark | Up | 24.1 | 116.7 | Low | 04:10:57 - 04:24:37 | 10632 |
| Klamath Falls | 04:17:51 | -33.0 | Dark | Up | 23.5 | 115.5 | Low | 04:11:01 - 04:24:41 | 10621 |
| Tulelake | 04:17:51 | -33.3 | Dark | Up | 23.8 | 115.7 | Low | 04:11:01 - 04:24:41 | 10602 |
| Lakeview | 04:17:49 | -34.0 | Dark | Up | 24.4 | 116.7 | Low | 04:10:59 - 04:24:39 | 10600 |
| Cedarville | 04:17:51 | -34.3 | Dark | Up | 24.8 | 116.6 | Low | 04:11:01 - 04:24:41 | 10559 |
| Fall River/Burney | 04:17:55 | -33.6 | Dark | Up | 24.2 | 115.4 | Low | 04:11:05 - 04:24:45 | 10547 |
| Susanville | 04:17:55 | -34.3 | Dark | Up | 25.0 | 115.7 | Low | 04:11:05 - 04:24:45 | 10499 |
| Greenville | 04:17:57 | -34.2 | Dark | Up | 24.9 | 115.4 | Low | 04:11:07 - 04:24:47 | 10486 |
| Gimple | 04:17:57 | -34.3 | Dark | Up | 25.0 | 115.5 | Low | 04:11:07 - 04:24:47 | 10485 |
| Quincy | 04:17:58 | -34.3 | Dark | Up | 25.0 | 115.3 | Low | 04:11:08 - 04:24:48 | 10474 |
| Portola | 04:17:57 | -34.7 | Dark | Up | 25.4 | 115.6 | Low | 04:11:07 - 04:24:47 | 10459 |
| Reno | 04:17:57 | -35.2 | Dark | Up | 26.0 | 116.0 | Low | 04:11:07 - 04:24:47 | 10434 |
| Carson City | 04:17:58 | -35.4 | Dark | Up | 26.2 | 115.9 | Low | 04:11:08 - 04:24:48 | 10411 |
| Gardnerville | 04:17:58 | -35.5 | Dark | Up | 26.3 | 115.8 | Low | 04:11:08 - 04:24:48 | 10395 |
| Yerington | 04:17:57 | -35.9 | Dark | Up | 26.7 | 116.3 | Low | 04:11:07 - 04:24:47 | 10389 |
| Hawthorne | 04:17:58 | -36.4 | Dark | Up | 27.3 | 116.5 | Low | 04:11:08 - 04:24:48 | 10352 |
| Lee Vining | 04:18:00 | -36.3 | Dark | Up | 27.2 | 115.9 | Low | 04:11:10 - 04:24:50 | 10323 |
| Tonopah | 04:17:56 | -37.6 | Dark | Up | 28.5 | 117.5 | Low | 04:11:06 - 04:24:46 | 10300 |
| Bishop | 04:18:01 | -37.0 | Dark | Up | 28.0 | 116.2 | Low | 04:11:11 - 04:24:51 | 10273 |
| Niwot | 04:17:23 | -45.0 | Dark | Up | 35.1 | 129.2 | Up | 04:10:33 - 04:24:13 | 10224 |
| Lone Pine | 04:18:02 | -37.5 | Dark | Up | 28.5 | 116.1 | Low | 04:11:12 - 04:24:52 | 10217 |
| Beatty | 04:17:59 | -38.4 | Dark | Up | 29.3 | 117.3 | Low | 04:11:09 - 04:24:49 | 10216 |
| Indian Springs | 04:17:58 | -39.3 | Dark | Up | 30.2 | 118.0 | Up | 04:11:08 - 04:24:48 | 10177 |
| CPSLO | 04:18:12 | -35.9 | Dark | Up | 27.2 | 113.5 | Low | 04:11:22 - 04:25:02 | 10168 |
| Henderson | 04:17:58 | -40.0 | Dark | Up | 31.0 | 118.3 | Up | 04:11:08 - 04:24:48 | 10129 |
| Searchlight/Boulder City | 04:17:59 | -40.3 | Dark | Up | 31.3 | 118.0 | Up | 04:11:09 - 04:24:49 | 10088 |
| Patrick | 04:17:57 | -41.1 | Dark | Up | 32.1 | 118.8 | Up | 04:11:07 - 04:24:47 | 10066 |
| Laughlin/Bullhead City | 04:17:59 | -40.6 | Dark | Up | 31.7 | 118.1 | Up | 04:11:09 - 04:24:49 | 10061 |
| Kingman/Dolan Springs | 04:17:58 | -41.0 | Dark | Up | 32.1 | 118.6 | Up | 04:11:08 - 04:24:48 | 10054 |
| Wildwood | 04:18:11 | -37.8 | Dark | Up | 29.2 | 114.5 | Low | 04:11:21 - 04:25:01 | 10052 |
| Mohave Valley | 04:18:00 | -40.7 | Dark | Up | 31.8 | 118.0 | Up | 04:11:10 - 04:24:50 | 10042 |
| DCO | 04:17:56 | -41.7 | Dark | Up | 32.7 | 119.3 | Up | 04:11:06 - 04:24:46 | 10032 |
| Lake Havasu City | 04:18:00 | -41.1 | Dark | Up | 32.2 | 118.0 | Up | 04:11:10 - 04:24:50 | 10009 |
| Idyllwild | 04:18:08 | -39.4 | Dark | Up | 30.8 | 115.7 | Up | 04:11:18 - 04:24:58 | 9995 |
| Parker | 04:18:02 | -41.2 | Dark | Up | 32.4 | 117.8 | Up | 04:11:12 - 04:24:52 | 9983 |
| Blythe | 04:18:04 | -41.1 | Dark | Up | 32.4 | 117.3 | Up | 04:11:14 - 04:24:54 | 9951 |
| Calipatria | 04:18:07 | -40.6 | Dark | Up | 31.9 | 116.3 | Up | 04:11:17 - 04:24:57 | 9931 |
| Yuma | 04:18:06 | -41.4 | Dark | Up | 32.8 | 116.7 | Up | 04:11:16 - 04:24:56 | 9884 |
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 523640, (2019/10/18 04:16UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.5 -29:37:23 1.2 47.69 98 68Omi Cet 02:19:20.8 -02:58:44 2.0 10.01 44 PPM 183660 01:37:52.1 -03:26:27 6.5 2.04 53 PPM 174965 01:42:25.2 -01:02:13 8.3 0.79 51 PPM 174951 01:39:12.4 -01:34:53 9.5 0.19 52 523640 01:39:45.7 -01:27:21 16.4 51 Positions are for J2000
Event circumstances last updated at 2018/10/24 22:00:55 UT
Marc W. Buie, Southwest Research Institute