Event between (143751) 03US292 and star GA1100:00354116 with event index number of 1675114
Geocentric closest approach at 2021/01/04 03:09:58 UTC
J2000 position of star is 03:13:14.8 +21:13:00
Equinox of date position of star is 03:14:27.4 +21:17:38
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 113 degrees from the moon.
Moon is 74% illuminated.
TNO apparent brightness V=24.0
[RECON map]
TNO is 32.9 AU from the Sun
and 32.2 AU from the Earth.
The TNO is moving 13.0
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 90 seconds.
The 1-sigma cross-track error in the shadow position is
1169 km.
The sky-plane scale is
23383.7 km/arcsec.
The TNO has an absolute magnitude Hv=8.7
Diameter=109.7 km assuming a 5% albedo -- 8.5 sec chord
Diameter=44.8 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 5:3EE+5:3II
Star training set for 143751, (2021/01/04 03:10UT) Object RA Dec mag sep mel Aldebaran 04:37:07.7 +16:32:59 0.8 20.10 95 44Zet Per 03:55:27.5 +31:56:40 2.8 14.03 100 58Zet Ari 03:16:06.8 +21:07:15 4.9 0.42 112 PPM 092330 03:16:59.0 +21:14:30 8.3 0.59 112 PPM 092291 03:13:29.1 +21:33:39 9.9 0.35 113 143751 03:14:27.6 +21:17:39 15.9 112 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 24.6 km
RECON observability=1.0 and success probability=38.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 03:10:09 | -28.0 | Dark | Down | 58.3 | 150.5 | Up | 03:02:08 - 03:18:09 | 1541 |
| Victoria | 03:10:36 | -25.3 | Dark | Down | 58.3 | 142.4 | Up | 03:02:35 - 03:18:36 | 1513 |
| Kelowna | 03:10:11 | -27.9 | Dark | Down | 58.6 | 149.9 | Up | 03:02:10 - 03:18:11 | 1512 |
| Peachland | 03:10:13 | -27.7 | Dark | Down | 58.6 | 149.3 | Up | 03:02:12 - 03:18:13 | 1511 |
| Summerland | 03:10:13 | -27.7 | Dark | Down | 58.8 | 149.4 | Up | 03:02:13 - 03:18:14 | 1496 |
| Penticton | 03:10:13 | -27.8 | Dark | Down | 58.9 | 149.5 | Up | 03:02:13 - 03:18:14 | 1487 |
| Oliver | 03:10:14 | -27.8 | Dark | Down | 59.2 | 149.2 | Up | 03:02:13 - 03:18:14 | 1457 |
| Anarchist Mountain Observatory | 03:10:14 | -27.9 | Dark | Down | 59.4 | 149.4 | Up | 03:02:14 - 03:18:15 | 1437 |
| Tonasket | 03:10:15 | -27.8 | Dark | Down | 59.6 | 149.0 | Up | 03:02:15 - 03:18:16 | 1413 |
| Okanogan | 03:10:18 | -27.7 | Dark | Down | 59.9 | 148.5 | Up | 03:02:17 - 03:18:18 | 1388 |
| Brewster | 03:10:20 | -27.6 | Dark | Down | 60.0 | 147.9 | Up | 03:02:19 - 03:18:20 | 1370 |
| Manson/Chelan | 03:10:22 | -27.3 | Dark | Down | 60.1 | 147.1 | Up | 03:02:22 - 03:18:23 | 1363 |
| Wenatchee | 03:10:25 | -27.2 | Dark | Down | 60.4 | 146.3 | Up | 03:02:25 - 03:18:26 | 1327 |
| Ellensburg | 03:10:28 | -27.0 | Dark | Down | 60.7 | 145.6 | Up | 03:02:27 - 03:18:28 | 1298 |
| Yakima | 03:10:30 | -27.0 | Dark | Down | 61.0 | 145.1 | Up | 03:02:29 - 03:18:30 | 1263 |
| Toppenish/White Swan | 03:10:29 | -27.1 | Dark | Down | 61.2 | 145.2 | Up | 03:02:29 - 03:18:30 | 1239 |
| Goldendale | 03:10:34 | -26.7 | Dark | Down | 61.5 | 143.9 | Up | 03:02:34 - 03:18:35 | 1203 |
| The Dalles | 03:10:36 | -26.5 | Dark | Down | 61.6 | 143.0 | Up | 03:02:36 - 03:18:37 | 1195 |
| Pasco | 03:10:23 | -27.9 | Dark | Down | 61.8 | 147.3 | Up | 03:02:23 - 03:18:24 | 1190 |
| PNWRO | 03:10:23 | -28.0 | Dark | Down | 62.1 | 147.5 | Up | 03:02:23 - 03:18:24 | 1162 |
| Maupin | 03:10:38 | -26.5 | Dark | Down | 61.9 | 142.8 | Up | 03:02:37 - 03:18:38 | 1155 |
| Sisters | 03:10:44 | -26.1 | Dark | Down | 62.4 | 140.9 | Up | 03:02:43 - 03:18:44 | 1092 |
| Redmond | 03:10:42 | -26.3 | Dark | Down | 62.6 | 141.6 | Up | 03:02:41 - 03:18:42 | 1077 |
| Bend | 03:10:43 | -26.2 | Dark | Down | 62.7 | 141.1 | Up | 03:02:43 - 03:18:44 | 1063 |
| Oregon Observatory | 03:10:45 | -26.1 | Dark | Down | 62.8 | 140.6 | Up | 03:02:45 - 03:18:46 | 1052 |
| La Pine/Gilchrist | 03:10:46 | -26.0 | Dark | Down | 62.9 | 140.3 | Up | 03:02:46 - 03:18:47 | 1035 |
| North Lake | 03:10:45 | -26.4 | Dark | Down | 63.5 | 140.8 | Up | 03:02:44 - 03:18:45 | 977 |
| Paisley | 03:10:45 | -26.6 | Dark | Down | 64.1 | 140.8 | Up | 03:02:44 - 03:18:45 | 916 |
| Klamath Falls | 03:10:54 | -25.7 | Dark | Down | 63.9 | 137.9 | Up | 03:02:53 - 03:18:54 | 913 |
| Lakeview | 03:10:46 | -26.7 | Dark | Down | 64.6 | 140.5 | Up | 03:02:45 - 03:18:46 | 863 |
| Cedarville | 03:10:48 | -26.7 | Dark | Down | 65.2 | 139.9 | Up | 03:02:47 - 03:18:48 | 798 |
| Fall River/Burney | 03:10:56 | -25.8 | Dark | Down | 65.0 | 137.0 | Up | 03:02:56 - 03:18:57 | 793 |
| Susanville | 03:10:55 | -26.2 | Dark | Down | 65.8 | 137.4 | Up | 03:02:54 - 03:18:55 | 711 |
| Greenville | 03:10:57 | -26.0 | Dark | Down | 65.9 | 136.5 | Up | 03:02:57 - 03:18:58 | 695 |
| Gimple | 03:10:57 | -26.0 | Dark | Down | 65.9 | 136.6 | Up | 03:02:56 - 03:18:57 | 692 |
| Quincy | 03:10:58 | -26.0 | Dark | Down | 66.0 | 136.2 | Up | 03:02:58 - 03:18:59 | 676 |
| Portola | 03:10:56 | -26.3 | Dark | Down | 66.4 | 136.9 | Up | 03:02:55 - 03:18:56 | 648 |
| Reno | 03:10:53 | -26.7 | Dark | Down | 66.9 | 137.7 | Up | 03:02:53 - 03:18:54 | 602 |
| Carson City | 03:10:54 | -26.7 | Dark | Down | 67.2 | 137.2 | Up | 03:02:54 - 03:18:55 | 568 |
| Gardnerville | 03:10:55 | -26.7 | Dark | Down | 67.4 | 136.9 | Up | 03:02:54 - 03:18:55 | 543 |
| Yerington | 03:10:52 | -27.2 | Dark | Down | 67.7 | 138.1 | Up | 03:02:51 - 03:18:52 | 528 |
| Hawthorne | 03:10:50 | -27.5 | Dark | Down | 68.3 | 138.4 | Up | 03:02:50 - 03:18:51 | 467 |
| Lee Vining | 03:10:55 | -27.1 | Dark | Down | 68.4 | 136.5 | Up | 03:02:55 - 03:18:56 | 430 |
| Tonopah | 03:10:43 | -28.5 | Dark | Down | 69.3 | 140.7 | Up | 03:02:43 - 03:18:44 | 375 |
| Bishop | 03:10:53 | -27.5 | Dark | Down | 69.3 | 136.9 | Up | 03:02:53 - 03:18:54 | 348 |
| Beatty | 03:10:45 | -28.7 | Dark | Down | 70.5 | 139.7 | Up | 03:02:44 - 03:18:45 | 249 |
| CPSLO | 03:11:07 | -25.4 | Dark | Down | 69.3 | 128.4 | Up | 03:03:07 - 03:19:08 | 248 |
| Dunrhomin | 03:09:24 | -37.7 | Dark | Down | 70.9 | 173.8 | Up | 03:01:24 - 03:17:25 | 228 |
| Indian Springs | 03:10:39 | -29.5 | Dark | Down | 71.2 | 141.6 | Up | 03:02:39 - 03:18:40 | 181 |
| Henderson | 03:10:37 | -30.0 | Dark | Down | 72.0 | 142.3 | Up | 03:02:37 - 03:18:38 | 106 |
| Wildwood | 03:11:06 | -26.9 | Dark | Down | 71.4 | 130.0 | Up | 03:03:06 - 03:19:07 | 39 |
| Patrick | 03:10:32 | -30.8 | Dark | Down | 73.0 | 144.0 | Up | 03:02:32 - 03:18:33 | 8 |
| Laughlin/Bullhead City | 03:10:37 | -30.2 | Dark | Down | 72.9 | 141.7 | Up | 03:02:37 - 03:18:38 | 7 |
| Kingman/Dolan Springs | 03:10:34 | -30.6 | Dark | Down | 73.1 | 143.1 | Up | 03:02:34 - 03:18:35 | -8 |
| Mohave Valley | 03:10:38 | -30.2 | Dark | Down | 73.1 | 141.2 | Up | 03:02:38 - 03:18:39 | -20 |
| Idyllwild | 03:10:56 | -28.3 | Dark | Down | 72.8 | 133.3 | Up | 03:02:55 - 03:18:56 | -62 |
| Lake Havasu City | 03:10:38 | -30.3 | Dark | Down | 73.6 | 141.0 | Up | 03:02:37 - 03:18:38 | -68 |
| Parker | 03:10:39 | -30.3 | Dark | Down | 73.8 | 140.3 | Up | 03:02:38 - 03:18:39 | -104 |
| Blythe | 03:10:42 | -30.0 | Dark | Down | 74.1 | 138.4 | Up | 03:02:42 - 03:18:43 | -146 |
| Calipatria | 03:10:50 | -29.2 | Dark | Down | 73.9 | 134.8 | Up | 03:02:50 - 03:18:51 | -163 |
| George/Scottsdale | 03:10:25 | -32.2 | Dark | Down | 75.4 | 146.5 | Up | 03:02:24 - 03:18:25 | -226 |
| Yuma | 03:10:46 | -29.8 | Dark | Down | 74.8 | 136.0 | Up | 03:02:45 - 03:18:46 | -237 |
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 143751, (2021/01/04 03:10UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 20.10 95 44Zet Per 03:54:07.9 +31:53:01 2.8 14.03 100 58Zet Ari 03:14:54.0 +21:02:39 4.9 0.42 112 PPM 092330 03:15:46.1 +21:09:54 8.3 0.59 112 PPM 092291 03:12:16.3 +21:28:58 9.9 0.35 113 143751 03:13:14.8 +21:13:00 15.9 113 Positions are for J2000
Event circumstances last updated at 2020/12/17 23:33:51 UT
Marc W. Buie, Southwest Research Institute