Event between 98UR43 and star GA1180:02082040 with event index number of 1238932
Geocentric closest approach at 2023/01/21 09:49:51 UTC
J2000 position of star is 06:01:45.4 +28:56:36
Equinox of date position of star is 06:03:10.3 +28:56:31
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 156 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=23.3
[RECON map]
TNO is 31.1 AU from the Sun
and 30.2 AU from the Earth.
The TNO is moving 20.4
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 874 seconds.
The 1-sigma cross-track error in the shadow position is
3529 km.
The sky-plane scale is
21922.8 km/arcsec.
The TNO has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 6.5 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
Star training set for 98UR43, (2023/01/21 09:50UT) Object RA Dec mag sep mel Betelgeuse 05:56:25.2 +07:24:34 0.4 21.59 147 Alnath 05:27:45.1 +28:37:29 1.6 7.78 148 PPM 095117 05:58:01.7 +28:56:38 6.5 1.14 155 PPM 095222 06:02:05.0 +29:00:15 7.9 0.26 156 PPM 095236 06:02:46.0 +28:48:14 10.1 0.17 156 98UR43 06:03:13.3 +28:56:31 15.3 156 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
1.0 sigma about the mid-time.
The median site spacing is 20.5 km
RECON observability=1.0 and success probability=12.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 09:46:45 | -46.4 | Dark | Down | 33.9 | 274.9 | Up | 09:31:45 - 10:01:45 | -2706 |
| Kamloops | 09:47:02 | -54.0 | Dark | Down | 42.9 | 264.7 | Up | 09:32:02 - 10:02:02 | -3239 |
| Kelowna | 09:46:58 | -54.3 | Dark | Down | 42.4 | 266.2 | Up | 09:31:58 - 10:01:58 | -3286 |
| Peachland | 09:46:58 | -54.5 | Dark | Down | 42.6 | 266.1 | Up | 09:31:58 - 10:01:58 | -3304 |
| Summerland | 09:46:58 | -54.6 | Dark | Down | 42.6 | 266.3 | Up | 09:31:58 - 10:01:58 | -3315 |
| Penticton | 09:46:57 | -54.6 | Dark | Down | 42.5 | 266.4 | Up | 09:31:57 - 10:01:57 | -3317 |
| Oliver | 09:46:56 | -54.8 | Dark | Down | 42.5 | 266.7 | Up | 09:31:56 - 10:01:56 | -3349 |
| Anarchist Mountain Observatory | 09:46:55 | -54.9 | Dark | Down | 42.4 | 267.0 | Up | 09:31:55 - 10:01:55 | -3358 |
| Tonasket | 09:46:54 | -55.1 | Dark | Down | 42.5 | 267.3 | Up | 09:31:54 - 10:01:54 | -3387 |
| Okanogan | 09:46:53 | -55.5 | Dark | Down | 42.6 | 267.5 | Up | 09:31:53 - 10:01:53 | -3422 |
| Brewster | 09:46:53 | -55.7 | Dark | Down | 42.7 | 267.5 | Up | 09:31:53 - 10:01:53 | -3452 |
| Manson/Chelan | 09:46:53 | -56.1 | Dark | Down | 43.0 | 267.5 | Up | 09:31:53 - 10:01:53 | -3481 |
| Victoria | 09:47:02 | -57.0 | Dark | Down | 45.1 | 264.3 | Up | 09:32:02 - 10:02:02 | -3514 |
| Wenatchee | 09:46:52 | -56.5 | Dark | Down | 43.1 | 267.8 | Up | 09:31:52 - 10:01:52 | -3529 |
| Ellensburg | 09:46:51 | -56.9 | Dark | Down | 43.3 | 268.0 | Up | 09:31:51 - 10:01:51 | -3572 |
| Yakima | 09:46:50 | -57.2 | Dark | Down | 43.3 | 268.3 | Up | 09:31:50 - 10:01:50 | -3610 |
| PNWRO | 09:46:44 | -56.8 | Dark | Down | 42.2 | 270.1 | Up | 09:31:44 - 10:01:44 | -3614 |
| Toppenish/White Swan | 09:46:48 | -57.3 | Dark | Down | 43.2 | 268.7 | Up | 09:31:48 - 10:01:48 | -3625 |
| Dunrhomin | 09:46:02 | -51.4 | Dark | Down | 31.7 | 282.8 | Up | 09:31:02 - 10:01:02 | -3660 |
| CU-SBO | 09:46:02 | -51.5 | Dark | Down | 31.7 | 282.9 | Up | 09:31:02 - 10:01:02 | -3686 |
| Goldendale | 09:46:48 | -57.9 | Dark | Down | 43.5 | 268.9 | Up | 09:31:48 - 10:01:48 | -3688 |
| The Dalles | 09:46:48 | -58.2 | Dark | Down | 43.8 | 268.8 | Up | 09:31:48 - 10:01:48 | -3719 |
| Maupin | 09:46:47 | -58.5 | Dark | Down | 43.7 | 269.3 | Up | 09:31:47 - 10:01:47 | -3755 |
| Sisters | 09:46:45 | -59.4 | Dark | Down | 44.1 | 269.8 | Up | 09:31:45 - 10:01:45 | -3851 |
| Bend | 09:46:44 | -59.4 | Dark | Down | 43.9 | 270.2 | Up | 09:31:44 - 10:01:44 | -3866 |
| Oregon Observatory | 09:46:44 | -59.6 | Dark | Down | 44.0 | 270.3 | Up | 09:31:44 - 10:01:44 | -3886 |
| North Lake | 09:46:40 | -59.8 | Dark | Down | 43.6 | 271.3 | Up | 09:31:40 - 10:01:40 | -3929 |
| Lakeview | 09:46:36 | -60.2 | Dark | Down | 43.2 | 272.6 | Up | 09:31:36 - 10:01:36 | -4012 |
| Chiloquin | 09:46:41 | -60.7 | Dark | Down | 44.3 | 271.3 | Up | 09:31:41 - 10:01:41 | -4023 |
| Klamath Falls | 09:46:40 | -60.9 | Dark | Down | 44.2 | 271.6 | Up | 09:31:40 - 10:01:40 | -4053 |
| Cedarville | 09:46:34 | -60.5 | Dark | Down | 43.0 | 273.3 | Up | 09:31:34 - 10:01:34 | -4069 |
| Fall River/Burney | 09:46:36 | -61.5 | Dark | Down | 43.9 | 273.0 | Up | 09:31:36 - 10:01:36 | -4154 |
| Susanville | 09:46:32 | -61.5 | Dark | Down | 43.3 | 274.1 | Up | 09:31:32 - 10:01:32 | -4190 |
| Gimple | 09:46:32 | -61.8 | Dark | Down | 43.4 | 274.2 | Up | 09:31:32 - 10:01:32 | -4224 |
| Greenville | 09:46:32 | -61.9 | Dark | Down | 43.5 | 274.1 | Up | 09:31:32 - 10:01:32 | -4226 |
| Portola | 09:46:30 | -61.8 | Dark | Down | 43.1 | 274.7 | Up | 09:31:30 - 10:01:30 | -4242 |
| Quincy | 09:46:31 | -62.0 | Dark | Down | 43.5 | 274.3 | Up | 09:31:31 - 10:01:31 | -4246 |
| Reno | 09:46:28 | -61.5 | Dark | Down | 42.6 | 275.3 | Up | 09:31:28 - 10:01:28 | -4246 |
| Yerington | 09:46:25 | -61.5 | Dark | Down | 42.1 | 276.2 | Up | 09:31:25 - 10:01:25 | -4278 |
| Carson City | 09:46:27 | -61.7 | Dark | Down | 42.6 | 275.7 | Up | 09:31:27 - 10:01:27 | -4280 |
| Tonopah | 09:46:18 | -60.7 | Dark | Down | 40.5 | 278.1 | Up | 09:31:18 - 10:01:18 | -4301 |
| Gardnerville | 09:46:26 | -61.9 | Dark | Down | 42.5 | 275.9 | Up | 09:31:26 - 10:01:26 | -4302 |
| Hawthorne | 09:46:22 | -61.4 | Dark | Down | 41.6 | 276.9 | Up | 09:31:22 - 10:01:22 | -4305 |
| Lee Vining | 09:46:22 | -62.0 | Dark | Down | 41.9 | 277.2 | Up | 09:31:22 - 10:01:22 | -4375 |
| Indian Springs | 09:46:11 | -60.4 | Dark | Down | 39.0 | 280.0 | Up | 09:31:11 - 10:01:11 | -4389 |
| Beatty | 09:46:14 | -61.0 | Dark | Down | 39.9 | 279.2 | Up | 09:31:14 - 10:01:14 | -4396 |
| Bishop | 09:46:19 | -61.9 | Dark | Down | 41.3 | 278.0 | Up | 09:31:19 - 10:01:19 | -4409 |
| Henderson | 09:46:08 | -60.1 | Dark | Down | 38.4 | 280.8 | Up | 09:31:08 - 10:01:08 | -4415 |
| Patrick | 09:46:03 | -59.5 | Dark | Down | 37.4 | 281.8 | Up | 09:31:03 - 10:01:03 | -4434 |
| Kingman/Dolan Springs | 09:46:03 | -59.8 | Dark | Down | 37.5 | 281.8 | Up | 09:31:03 - 10:01:03 | -4462 |
| Laughlin/Bullhead City | 09:46:04 | -60.2 | Dark | Down | 37.9 | 281.6 | Up | 09:31:04 - 10:01:04 | -4484 |
| Mohave Valley | 09:46:04 | -60.3 | Dark | Down | 37.9 | 281.8 | Up | 09:31:04 - 10:01:04 | -4510 |
| George/Scottsdale | 09:45:55 | -58.6 | Dark | Down | 35.4 | 283.8 | Up | 09:30:55 - 10:00:55 | -4519 |
| Lake Havasu City | 09:46:02 | -60.2 | Dark | Down | 37.6 | 282.2 | Up | 09:31:02 - 10:01:02 | -4539 |
| Parker | 09:46:01 | -60.3 | Dark | Down | 37.5 | 282.5 | Up | 09:31:01 - 10:01:01 | -4572 |
| Idyllwild | 09:46:05 | -62.3 | Dark | Down | 39.3 | 281.8 | Up | 09:31:05 - 10:01:05 | -4701 |
| Calipatria | 09:46:02 | -61.7 | Dark | Down | 38.3 | 282.8 | Up | 09:31:02 - 10:01:02 | -4717 |
| Yuma | 09:45:58 | -61.1 | Dark | Down | 37.4 | 283.5 | Up | 09:30:58 - 10:00:58 | -4725 |
| Wildwood | 09:46:11 | -63.6 | Dark | Down | 40.9 | 280.7 | Up | 09:31:11 - 10:01:11 | -4735 |
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 98UR43, (2023/01/21 09:50UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 21.59 147 Alnath 05:26:17.5 +28:36:23 1.6 7.78 148 PPM 095117 05:56:33.8 +28:56:32 6.5 1.14 155 PPM 095222 06:00:37.0 +29:00:18 7.9 0.26 156 PPM 095236 06:01:18.2 +28:48:18 10.1 0.17 156 98UR43 06:01:45.4 +28:56:36 15.3 156 Positions are for J2000
Event circumstances last updated at 2022/04/02 01:16:49 UT
Marc W. Buie, Southwest Research Institute