Event between (523741) 14TY85 and star UC4-578-009245 with event index number of 305984
Geocentric closest approach at 2019/09/02 06:53:57 UTC
J2000 position of star is 03:47:03.5 +25:34:40
Equinox of date position of star is 03:48:11.5 +25:38:06
Stellar brightness R=16.2,
use SENSEUP=128
Star is 138 degrees from the moon.
Moon is 12% illuminated.
TNO apparent brightness V=21.9
[RECON map]
TNO is 32.6 AU from the Sun
and 32.4 AU from the Earth.
The TNO is moving 4.6
km/sec on the sky relative to the star, or,
0.7 arcsec/hr.
The 1-sigma error in the time of the event is 350 seconds.
The 1-sigma cross-track error in the shadow position is
1818 km.
The sky-plane scale is
23525.1 km/arcsec.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 62.8 sec chord
Diameter=117.7 km assuming a 30% albedo -- 25.6 sec chord
Dynamical classification is CENTAURR
Star training set for 523741, (2019/09/02 06:54UT) Object RA Dec mag sep mel Aldebaran 04:37:03.1 +16:32:50 0.8 14.55 130 44Zet Per 03:55:22.4 +31:56:26 2.8 6.49 134 PPM 092967 03:51:30.1 +25:38:14 5.5 0.73 138 PPM 092908 03:49:17.3 +25:02:51 8.0 0.64 138 PPM 092874 03:48:08.0 +25:41:43 9.7 0.06 138 523741 03:48:14.6 +25:38:15 16.2 138 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
2.6 sigma about the mid-time.
The median site spacing is 22.3 km
RECON observability=0.2 and success probability=18.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 07:11:28 | -31.3 | Dark | Down | 21.1 | 74.9 | Low | 06:56:28 - 07:26:28 | -126 |
| Summerland | 07:11:30 | -31.2 | Dark | Down | 20.8 | 74.6 | Low | 06:56:30 - 07:26:30 | -129 |
| Penticton | 07:11:25 | -31.6 | Dark | Down | 20.8 | 74.6 | Low | 06:56:25 - 07:26:25 | -159 |
| Okanagan Falls | 07:11:23 | -31.8 | Dark | Down | 20.8 | 74.5 | Low | 06:56:23 - 07:26:23 | -177 |
| Oliver | 07:11:21 | -31.9 | Dark | Down | 20.7 | 74.5 | Low | 06:56:21 - 07:26:21 | -192 |
| Anarchist Mountain Observatory | 07:11:18 | -32.1 | Dark | Down | 20.8 | 74.5 | Low | 06:56:18 - 07:26:18 | -208 |
| Oroville | 07:11:17 | -32.2 | Dark | Down | 20.7 | 74.4 | Low | 06:56:17 - 07:26:17 | -215 |
| Tonasket | 07:11:14 | -32.4 | Dark | Down | 20.7 | 74.4 | Low | 06:56:14 - 07:26:14 | -237 |
| Okanogan | 07:11:12 | -32.7 | Dark | Down | 20.5 | 74.1 | Low | 06:56:12 - 07:26:12 | -267 |
| Brewster | 07:11:10 | -32.9 | Dark | Down | 20.3 | 73.9 | Low | 06:56:10 - 07:26:10 | -292 |
| Manson/Chelan | 07:11:10 | -33.1 | Dark | Down | 20.0 | 73.6 | Really Low | 06:56:10 - 07:26:10 | -310 |
| Entiat | 07:11:07 | -33.3 | Dark | Down | 19.9 | 73.4 | Really Low | 06:56:07 - 07:26:07 | -330 |
| Wenatchee | 07:11:05 | -33.5 | Dark | Down | 19.7 | 73.3 | Really Low | 06:56:05 - 07:26:05 | -353 |
| Ellensburg | 07:11:03 | -33.9 | Dark | Down | 19.4 | 73.0 | Really Low | 06:56:03 - 07:26:03 | -390 |
| Yakima | 07:10:57 | -34.2 | Dark | Down | 19.3 | 72.8 | Really Low | 06:55:57 - 07:25:57 | -426 |
| Toppenish/White Swan | 07:10:53 | -34.5 | Dark | Down | 19.3 | 72.8 | Really Low | 06:55:53 - 07:25:53 | -446 |
| Pasco | 07:10:43 | -34.8 | Dark | Down | 20.1 | 73.6 | Low | 06:55:43 - 07:25:43 | -459 |
| PNWRO | 07:10:39 | -35.1 | Dark | Down | 20.2 | 73.7 | Low | 06:55:39 - 07:25:39 | -481 |
| George/Umatilla | 07:10:40 | -35.1 | Dark | Down | 19.9 | 73.3 | Really Low | 06:55:40 - 07:25:40 | -489 |
| Goldendale | 07:10:49 | -34.9 | Dark | Down | 18.9 | 72.4 | Really Low | 06:55:49 - 07:25:49 | -494 |
| The Dalles | 07:10:49 | -35.1 | Dark | Down | 18.6 | 72.1 | Really Low | 06:55:49 - 07:25:49 | -512 |
| Maupin | 07:10:43 | -35.5 | Dark | Down | 18.5 | 72.0 | Really Low | 06:55:43 - 07:25:43 | -550 |
| Madras/Culver | 07:10:36 | -36.0 | Dark | Down | 18.3 | 71.8 | Really Low | 06:55:36 - 07:25:36 | -597 |
| Sisters | 07:10:35 | -36.2 | Dark | Down | 17.9 | 71.4 | Really Low | 06:55:35 - 07:25:35 | -624 |
| Redmond | 07:10:32 | -36.3 | Dark | Down | 18.1 | 71.6 | Really Low | 06:55:32 - 07:25:32 | -628 |
| Bend | 07:10:31 | -36.5 | Dark | Down | 17.9 | 71.5 | Really Low | 06:55:31 - 07:25:31 | -646 |
| Oregon Observatory | 07:10:29 | -36.6 | Dark | Down | 17.8 | 71.3 | Really Low | 06:55:29 - 07:25:29 | -661 |
| La Pine/Gilchrist | 07:10:27 | -36.8 | Dark | Down | 17.7 | 71.2 | Really Low | 06:55:27 - 07:25:27 | -678 |
| North Lake | 07:10:16 | -37.4 | Dark | Down | 17.9 | 71.4 | Really Low | 06:55:16 - 07:25:16 | -718 |
| Paisley | 07:10:07 | -38.0 | Dark | Down | 18.0 | 71.4 | Really Low | 06:55:07 - 07:25:07 | -766 |
| Chiloquin | 07:10:15 | -37.8 | Dark | Down | 17.0 | 70.6 | Really Low | 06:55:15 - 07:25:15 | -771 |
| Klamath Falls | 07:10:09 | -38.1 | Dark | Down | 17.0 | 70.6 | Really Low | 06:55:09 - 07:25:09 | -800 |
| Lakeview | 07:09:58 | -38.5 | Dark | Down | 17.9 | 71.4 | Really Low | 06:54:58 - 07:24:58 | -809 |
| Tulelake | 07:10:05 | -38.5 | Dark | Down | 17.1 | 70.7 | Really Low | 06:55:05 - 07:25:05 | -824 |
| Cedarville | 07:09:48 | -39.1 | Dark | Down | 17.8 | 71.3 | Really Low | 06:54:48 - 07:24:48 | -865 |
| Niwot | 07:07:33 | -41.9 | Dark | Down | 28.0 | 79.0 | Low | 06:52:33 - 07:22:33 | -875 |
| Fall River/Burney | 07:09:51 | -39.3 | Dark | Down | 16.8 | 70.4 | Really Low | 06:54:51 - 07:24:51 | -900 |
| Susanville | 07:09:37 | -40.1 | Dark | Down | 17.1 | 70.6 | Really Low | 06:54:37 - 07:24:37 | -955 |
| Greenville | 07:09:35 | -40.3 | Dark | Down | 16.8 | 70.4 | Really Low | 06:54:35 - 07:24:35 | -977 |
| Gimple | 07:09:34 | -40.3 | Dark | Down | 16.8 | 70.4 | Really Low | 06:54:34 - 07:24:34 | -977 |
| Quincy | 07:09:32 | -40.5 | Dark | Down | 16.7 | 70.3 | Really Low | 06:54:32 - 07:24:32 | -993 |
| Portola | 07:09:26 | -40.7 | Dark | Down | 17.0 | 70.5 | Really Low | 06:54:26 - 07:24:26 | -1005 |
| Reno | 07:09:18 | -41.1 | Dark | Down | 17.3 | 70.8 | Really Low | 06:54:18 - 07:24:18 | -1029 |
| Carson City | 07:09:14 | -41.4 | Dark | Down | 17.2 | 70.7 | Really Low | 06:54:14 - 07:24:14 | -1058 |
| Yerington | 07:09:06 | -41.7 | Dark | Down | 17.6 | 71.0 | Really Low | 06:54:06 - 07:24:06 | -1075 |
| Gardnerville | 07:09:09 | -41.7 | Dark | Down | 17.2 | 70.6 | Really Low | 06:54:09 - 07:24:09 | -1077 |
| Hawthorne | 07:08:55 | -42.3 | Dark | Down | 17.8 | 71.1 | Really Low | 06:53:55 - 07:23:55 | -1113 |
| Tonopah | 07:08:37 | -43.0 | Dark | Down | 18.6 | 71.7 | Really Low | 06:53:37 - 07:23:37 | -1150 |
| Lee Vining | 07:08:49 | -42.7 | Dark | Down | 17.2 | 70.7 | Really Low | 06:53:49 - 07:23:49 | -1157 |
| Bishop | 07:08:35 | -43.5 | Dark | Down | 17.5 | 70.8 | Really Low | 06:53:35 - 07:23:35 | -1205 |
| Beatty | 07:08:16 | -44.2 | Dark | Down | 18.6 | 71.5 | Really Low | 06:53:16 - 07:23:16 | -1240 |
| Indian Springs | 07:08:03 | -44.7 | Dark | Down | 19.2 | 71.9 | Really Low | 06:53:03 - 07:23:03 | -1263 |
| Lone Pine | 07:08:21 | -44.2 | Dark | Down | 17.5 | 70.7 | Really Low | 06:53:21 - 07:23:21 | -1264 |
| Henderson | 07:07:49 | -45.3 | Dark | Down | 19.6 | 72.1 | Really Low | 06:52:49 - 07:22:49 | -1302 |
| Patrick | 07:07:29 | -46.1 | Dark | Down | 20.2 | 72.4 | Low | 06:52:29 - 07:22:29 | -1344 |
| Searchlight/Boulder City | 07:07:39 | -45.9 | Dark | Down | 19.4 | 71.9 | Really Low | 06:52:39 - 07:22:39 | -1345 |
| CPSLO | 07:08:21 | -44.9 | Dark | Down | 15.1 | 69.1 | Really Low | 06:53:21 - 07:23:21 | -1355 |
| Kingman/Dolan Springs | 07:07:28 | -46.3 | Dark | Down | 19.9 | 72.2 | Really Low | 06:52:28 - 07:22:28 | -1362 |
| DCO | 07:07:18 | -46.5 | Dark | Down | 20.6 | 72.6 | Low | 06:52:18 - 07:22:18 | -1363 |
| Laughlin/Bullhead City | 07:07:32 | -46.2 | Dark | Down | 19.6 | 71.9 | Really Low | 06:52:32 - 07:22:32 | -1366 |
| Mohave Valley | 07:07:28 | -46.5 | Dark | Down | 19.5 | 71.8 | Really Low | 06:52:28 - 07:22:28 | -1386 |
| Lake Havasu City | 07:07:19 | -46.9 | Dark | Down | 19.5 | 71.8 | Really Low | 06:52:19 - 07:22:19 | -1415 |
| Parker | 07:07:13 | -47.3 | Dark | Down | 19.4 | 71.7 | Really Low | 06:52:13 - 07:22:13 | -1441 |
| Wildwood | 07:07:47 | -46.5 | Dark | Down | 16.1 | 69.7 | Really Low | 06:52:47 - 07:22:47 | -1451 |
| Idyllwild | 07:07:25 | -47.2 | Dark | Down | 17.4 | 70.4 | Really Low | 06:52:25 - 07:22:25 | -1478 |
| Blythe | 07:07:07 | -47.7 | Dark | Down | 19.0 | 71.4 | Really Low | 06:52:07 - 07:22:07 | -1481 |
| Calipatria | 07:07:07 | -48.1 | Dark | Down | 18.1 | 70.8 | Really Low | 06:52:07 - 07:22:07 | -1520 |
| Yuma | 07:06:53 | -48.6 | Dark | Down | 18.6 | 71.0 | Really Low | 06:51:53 - 07:21:53 | -1548 |
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 523741, (2019/09/02 06:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 14.55 130 44Zet Per 03:54:07.9 +31:53:01 2.8 6.49 134 PPM 092967 03:50:19.0 +25:34:44 5.5 0.73 138 PPM 092908 03:48:06.5 +24:59:17 8.0 0.64 138 PPM 092874 03:46:56.9 +25:38:07 9.7 0.06 138 523741 03:47:03.5 +25:34:40 16.2 138 Positions are for J2000
Event circumstances last updated at 2018/10/25 20:30:07 UT
Marc W. Buie, Southwest Research Institute