Event between (503858) 98HQ151 and star GA0760:21189859 with event index number of 2452069
Geocentric closest approach at 2022/06/08 07:31:26 UTC
J2000 position of star is 19:08:20.7 -12:05:02
Equinox of date position of star is 19:09:35.0 -12:02:50
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 110 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=24.1
[RECON map]
TNO is 33.3 AU from the Sun
and 32.4 AU from the Earth.
The TNO is moving 20.3
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 789 seconds.
The 1-sigma cross-track error in the shadow position is
4319 km.
The sky-plane scale is
23488.2 km/arcsec.
The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 5.2 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is 3:2E
Star training set for 503858, (2022/06/08 07:31UT) Object RA Dec mag sep mel Antares 16:30:47.2 -26:28:47 0.9 39.95 74 Nunki 18:56:39.3 -26:16:01 2.0 14.54 107 PPM 235666 19:14:30.7 -12:14:35 5.2 1.22 111 PPM 235496 19:07:40.1 -11:51:50 7.6 0.51 109 PPM 235521 19:08:45.4 -12:07:03 9.4 0.22 110 503858 19:09:35.8 -12:02:49 16.3 110 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
1.1 sigma about the mid-time.
The median site spacing is 19.3 km
RECON observability=0.9 and success probability=7.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 07:32:54 | -14.8 | AT | Up | 22.8 | 155.4 | Low | 07:17:54 - 07:47:54 | 2571 |
| Kamloops | 07:33:39 | -16.2 | AT | Up | 19.3 | 141.0 | Really Low | 07:18:39 - 07:48:39 | 2356 |
| Kelowna | 07:33:38 | -17.1 | AT | Up | 20.3 | 141.7 | Low | 07:18:38 - 07:48:38 | 2320 |
| Peachland | 07:33:39 | -17.2 | AT | Up | 20.3 | 141.4 | Low | 07:18:39 - 07:48:39 | 2310 |
| Summerland | 07:33:39 | -17.4 | AT | Up | 20.4 | 141.5 | Low | 07:18:39 - 07:48:39 | 2302 |
| Penticton | 07:33:39 | -17.4 | AT | Up | 20.5 | 141.5 | Low | 07:18:39 - 07:48:39 | 2300 |
| Oliver | 07:33:40 | -17.8 | AT | Up | 20.8 | 141.5 | Low | 07:18:40 - 07:48:40 | 2279 |
| Anarchist Mountain Observatory | 07:33:39 | -18.0 | AT | Up | 21.0 | 141.6 | Low | 07:18:39 - 07:48:39 | 2272 |
| Tonasket | 07:33:41 | -18.3 | Dark | Up | 21.2 | 141.5 | Low | 07:18:41 - 07:48:41 | 2252 |
| Okanogan | 07:33:42 | -18.6 | Dark | Up | 21.4 | 141.2 | Low | 07:18:42 - 07:48:42 | 2230 |
| Brewster | 07:33:43 | -18.8 | Dark | Up | 21.6 | 141.0 | Low | 07:18:43 - 07:48:43 | 2211 |
| Manson/Chelan | 07:33:44 | -19.0 | Dark | Up | 21.6 | 140.6 | Low | 07:18:44 - 07:48:44 | 2195 |
| Victoria | 07:33:52 | -18.1 | Dark | Up | 19.7 | 137.7 | Really Low | 07:18:52 - 07:48:52 | 2194 |
| Wenatchee | 07:33:46 | -19.5 | Dark | Up | 21.9 | 140.3 | Low | 07:18:46 - 07:48:46 | 2163 |
| Ellensburg | 07:33:48 | -19.9 | Dark | Up | 22.1 | 140.0 | Low | 07:18:48 - 07:48:48 | 2135 |
| Yakima | 07:33:48 | -20.3 | Dark | Up | 22.4 | 139.9 | Low | 07:18:48 - 07:48:48 | 2109 |
| Toppenish/White Swan | 07:33:49 | -20.5 | Dark | Up | 22.6 | 140.0 | Low | 07:18:49 - 07:48:49 | 2098 |
| PNWRO | 07:33:45 | -21.0 | Dark | Up | 23.6 | 141.3 | Low | 07:18:45 - 07:48:45 | 2092 |
| Goldendale | 07:33:51 | -21.0 | Dark | Up | 22.9 | 139.5 | Low | 07:18:51 - 07:48:51 | 2057 |
| The Dalles | 07:33:53 | -21.2 | Dark | Up | 22.9 | 139.1 | Low | 07:18:53 - 07:48:53 | 2038 |
| Maupin | 07:33:54 | -21.6 | Dark | Up | 23.2 | 139.0 | Low | 07:18:54 - 07:48:54 | 2012 |
| Sisters | 07:33:57 | -22.5 | Dark | Up | 23.7 | 138.3 | Low | 07:18:57 - 07:48:57 | 1948 |
| Bend | 07:33:56 | -22.7 | Dark | Up | 24.0 | 138.5 | Low | 07:18:56 - 07:48:56 | 1936 |
| Oregon Observatory | 07:33:57 | -22.9 | Dark | Up | 24.0 | 138.3 | Low | 07:18:57 - 07:48:57 | 1922 |
| North Lake | 07:33:57 | -23.6 | Dark | Up | 24.8 | 138.7 | Low | 07:18:57 - 07:48:57 | 1886 |
| Dunrhomin | 07:33:08 | -26.4 | Dark | Up | 33.7 | 153.5 | Up | 07:18:08 - 07:48:08 | 1858 |
| CU-SBO | 07:33:09 | -26.7 | Dark | Up | 33.9 | 153.3 | Up | 07:18:09 - 07:48:09 | 1840 |
| Chiloquin | 07:34:02 | -24.2 | Dark | Up | 24.8 | 137.6 | Low | 07:19:02 - 07:49:02 | 1827 |
| Lakeview | 07:33:58 | -24.7 | Dark | Up | 25.8 | 138.9 | Low | 07:18:58 - 07:48:58 | 1820 |
| Klamath Falls | 07:34:02 | -24.5 | Dark | Up | 25.1 | 137.5 | Low | 07:19:02 - 07:49:02 | 1804 |
| Cedarville | 07:33:59 | -25.3 | Dark | Up | 26.4 | 138.8 | Low | 07:18:59 - 07:48:59 | 1776 |
| Fall River/Burney | 07:34:03 | -25.7 | Dark | Up | 26.2 | 137.5 | Low | 07:19:03 - 07:49:03 | 1725 |
| Susanville | 07:34:02 | -26.4 | Dark | Up | 27.0 | 138.0 | Low | 07:19:02 - 07:49:02 | 1690 |
| Gimple | 07:34:04 | -26.7 | Dark | Up | 27.1 | 137.7 | Low | 07:19:04 - 07:49:04 | 1667 |
| Greenville | 07:34:04 | -26.7 | Dark | Up | 27.1 | 137.6 | Low | 07:19:04 - 07:49:04 | 1666 |
| Quincy | 07:34:04 | -26.9 | Dark | Up | 27.2 | 137.6 | Low | 07:19:04 - 07:49:04 | 1651 |
| Portola | 07:34:03 | -27.0 | Dark | Up | 27.6 | 138.0 | Low | 07:19:03 - 07:49:03 | 1649 |
| Reno | 07:34:01 | -27.3 | Dark | Up | 28.1 | 138.5 | Low | 07:19:01 - 07:49:01 | 1638 |
| Carson City | 07:34:02 | -27.7 | Dark | Up | 28.4 | 138.4 | Low | 07:19:02 - 07:49:02 | 1612 |
| Yerington | 07:34:00 | -27.9 | Dark | Up | 28.9 | 138.9 | Low | 07:19:00 - 07:49:00 | 1605 |
| Gardnerville | 07:34:02 | -28.0 | Dark | Up | 28.6 | 138.3 | Low | 07:19:02 - 07:49:02 | 1594 |
| Hawthorne | 07:33:59 | -28.5 | Dark | Up | 29.5 | 139.2 | Low | 07:18:59 - 07:48:59 | 1578 |
| Tonopah | 07:33:55 | -29.0 | Dark | Up | 30.5 | 140.4 | Up | 07:18:55 - 07:48:55 | 1562 |
| Lee Vining | 07:34:02 | -29.0 | Dark | Up | 29.7 | 138.6 | Low | 07:19:02 - 07:49:02 | 1529 |
| Bishop | 07:34:00 | -29.6 | Dark | Up | 30.5 | 139.0 | Up | 07:19:00 - 07:49:00 | 1493 |
| Beatty | 07:33:55 | -30.2 | Dark | Up | 31.7 | 140.4 | Up | 07:18:55 - 07:48:55 | 1479 |
| Indian Springs | 07:33:52 | -30.5 | Dark | Up | 32.5 | 141.3 | Up | 07:18:52 - 07:48:52 | 1468 |
| Henderson | 07:33:50 | -31.1 | Dark | Up | 33.2 | 141.8 | Up | 07:18:50 - 07:48:50 | 1436 |
| Patrick | 07:33:47 | -31.7 | Dark | Up | 34.3 | 142.7 | Up | 07:18:47 - 07:48:47 | 1401 |
| Kingman/Dolan Springs | 07:33:48 | -32.0 | Dark | Up | 34.4 | 142.4 | Up | 07:18:48 - 07:48:48 | 1382 |
| Laughlin/Bullhead City | 07:33:50 | -32.0 | Dark | Up | 34.1 | 141.9 | Up | 07:18:50 - 07:48:50 | 1373 |
| Mohave Valley | 07:33:51 | -32.2 | Dark | Up | 34.3 | 141.8 | Up | 07:18:51 - 07:48:51 | 1351 |
| Lake Havasu City | 07:33:50 | -32.7 | Dark | Up | 34.8 | 141.8 | Up | 07:18:50 - 07:48:50 | 1323 |
| Parker | 07:33:51 | -33.0 | Dark | Up | 35.1 | 141.7 | Up | 07:18:51 - 07:48:51 | 1295 |
| George/Scottsdale | 07:33:42 | -33.4 | Dark | Up | 36.6 | 144.0 | Up | 07:18:42 - 07:48:42 | 1292 |
| Wildwood | 07:34:07 | -32.9 | Dark | Up | 32.8 | 137.5 | Up | 07:19:07 - 07:49:07 | 1234 |
| Idyllwild | 07:34:01 | -33.3 | Dark | Up | 34.1 | 139.2 | Up | 07:19:01 - 07:49:01 | 1231 |
| Calipatria | 07:33:57 | -34.0 | Dark | Up | 35.2 | 140.0 | Up | 07:18:57 - 07:48:57 | 1197 |
| Yuma | 07:33:54 | -34.4 | Dark | Up | 36.0 | 140.7 | Up | 07:18:54 - 07:48:54 | 1174 |
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 503858, (2022/06/08 07:31UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 39.95 74 Nunki 18:55:15.9 -26:17:49 2.0 14.54 107 PPM 235666 19:13:15.6 -12:16:58 5.2 1.22 111 PPM 235496 19:06:25.1 -11:54:00 7.6 0.51 109 PPM 235521 19:07:30.2 -12:09:15 9.4 0.22 110 503858 19:08:20.7 -12:05:02 16.3 110 Positions are for J2000
Event circumstances last updated at 2022/03/15 01:03:58 UT
Marc W. Buie, Southwest Research Institute