Event between (503858) 98HQ151 and star GA0760:20829789 with event index number of 2452108
Geocentric closest approach at 2022/07/16 04:43:43 UTC
J2000 position of star is 19:04:42.7 -12:07:27
Equinox of date position of star is 19:05:57.0 -12:05:22
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 44 degrees from the moon.
Moon is 91% illuminated.
TNO apparent brightness V=24.0
[RECON map]
TNO is 33.3 AU from the Sun
and 32.3 AU from the Earth.
The TNO is moving 23.7
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 609 seconds.
The 1-sigma cross-track error in the shadow position is
3901 km.
The sky-plane scale is
23421.2 km/arcsec.
The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 4.4 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is 3:2E
Star training set for 503858, (2022/07/16 04:44UT) Object RA Dec mag sep mel Antares 16:30:47.6 -26:28:48 0.9 39.15 78 Nunki 18:56:39.7 -26:16:00 2.0 14.35 45 PPM 235666 19:14:31.1 -12:14:35 5.2 2.09 42 PPM 235474 19:06:53.5 -11:58:07 8.0 0.26 44 PPM 235462 19:06:26.1 -11:56:37 9.4 0.18 44 503858 19:05:58.2 -12:05:20 16.1 44 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
1.5 sigma about the mid-time.
The median site spacing is 26.1 km
RECON observability=0.3 and success probability=2.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 04:44:29 | -10.0 | NT | Down | 21.7 | 151.5 | Low | 04:29:29 - 04:59:29 | 6262 |
| Kamloops | 04:45:08 | -5.3 | CT | Down | 17.7 | 137.4 | Really Low | 04:30:08 - 05:00:08 | 6176 |
| Kelowna | 04:45:08 | -6.3 | NT | Down | 18.6 | 138.1 | Really Low | 04:30:08 - 05:00:08 | 6139 |
| Peachland | 04:45:09 | -6.2 | NT | Down | 18.6 | 137.8 | Really Low | 04:30:09 - 05:00:09 | 6133 |
| Summerland | 04:45:09 | -6.4 | NT | Down | 18.8 | 137.8 | Really Low | 04:30:09 - 05:00:09 | 6126 |
| Penticton | 04:45:09 | -6.5 | NT | Down | 18.9 | 137.9 | Really Low | 04:30:09 - 05:00:09 | 6123 |
| Oliver | 04:45:10 | -6.7 | NT | Down | 19.1 | 137.8 | Really Low | 04:30:10 - 05:00:10 | 6105 |
| Anarchist Mountain Observatory | 04:45:10 | -7.0 | NT | Down | 19.3 | 138.0 | Really Low | 04:30:10 - 05:00:10 | 6097 |
| Tonasket | 04:45:11 | -7.1 | NT | Down | 19.5 | 137.9 | Really Low | 04:30:11 - 05:00:11 | 6081 |
| Okanogan | 04:45:12 | -7.3 | NT | Down | 19.7 | 137.6 | Really Low | 04:30:12 - 05:00:12 | 6063 |
| Victoria | 04:45:21 | -5.3 | CT | Down | 17.9 | 134.2 | Really Low | 04:30:21 - 05:00:21 | 6056 |
| Brewster | 04:45:13 | -7.4 | NT | Down | 19.8 | 137.4 | Really Low | 04:30:13 - 05:00:13 | 6048 |
| Manson/Chelan | 04:45:15 | -7.4 | NT | Down | 19.8 | 137.0 | Really Low | 04:30:15 - 05:00:15 | 6035 |
| Wenatchee | 04:45:16 | -7.6 | NT | Down | 20.1 | 136.7 | Low | 04:30:16 - 05:00:16 | 6009 |
| Ellensburg | 04:45:18 | -7.8 | NT | Down | 20.3 | 136.4 | Low | 04:30:18 - 05:00:18 | 5986 |
| Yakima | 04:45:19 | -8.1 | NT | Down | 20.6 | 136.3 | Low | 04:30:19 - 05:00:19 | 5964 |
| Toppenish/White Swan | 04:45:19 | -8.3 | NT | Down | 20.8 | 136.4 | Low | 04:30:19 - 05:00:19 | 5952 |
| PNWRO | 04:45:17 | -9.3 | NT | Down | 21.8 | 137.7 | Low | 04:30:17 - 05:00:17 | 5937 |
| Goldendale | 04:45:22 | -8.5 | NT | Down | 21.0 | 135.9 | Low | 04:30:22 - 05:00:22 | 5920 |
| The Dalles | 04:45:23 | -8.4 | NT | Down | 21.0 | 135.5 | Low | 04:30:23 - 05:00:23 | 5905 |
| Maupin | 04:45:23 | -8.8 | NT | Down | 21.3 | 135.5 | Low | 04:30:23 - 05:00:23 | 5882 |
| Sisters | 04:45:27 | -9.1 | NT | Down | 21.7 | 134.8 | Low | 04:30:27 - 05:00:27 | 5829 |
| Bend | 04:45:27 | -9.4 | NT | Down | 22.0 | 135.0 | Low | 04:30:27 - 05:00:27 | 5816 |
| Oregon Observatory | 04:45:28 | -9.5 | NT | Down | 22.1 | 134.8 | Low | 04:30:28 - 05:00:28 | 5805 |
| North Lake | 04:45:29 | -10.2 | NT | Down | 22.8 | 135.1 | Low | 04:30:29 - 05:00:29 | 5769 |
| Chiloquin | 04:45:33 | -10.1 | NT | Down | 22.8 | 134.1 | Low | 04:30:33 - 05:00:33 | 5724 |
| Lakeview | 04:45:30 | -11.2 | NT | Down | 23.9 | 135.3 | Low | 04:30:30 - 05:00:30 | 5706 |
| Klamath Falls | 04:45:33 | -10.4 | NT | Down | 23.1 | 134.0 | Low | 04:30:33 - 05:00:33 | 5703 |
| Cedarville | 04:45:31 | -11.8 | NT | Down | 24.4 | 135.3 | Low | 04:30:31 - 05:00:31 | 5666 |
| Fall River/Burney | 04:45:35 | -11.4 | NT | Down | 24.1 | 134.0 | Low | 04:30:35 - 05:00:35 | 5629 |
| Dunrhomin | 04:44:49 | -20.1 | Dark | Up | 32.3 | 149.4 | Up | 04:29:49 - 04:59:49 | 5606 |
| Susanville | 04:45:34 | -12.2 | AT | Down | 25.0 | 134.5 | Low | 04:30:34 - 05:00:34 | 5592 |
| CU-SBO | 04:44:50 | -20.2 | Dark | Up | 32.5 | 149.2 | Up | 04:29:50 - 04:59:50 | 5590 |
| Gimple | 04:45:36 | -12.3 | AT | Down | 25.0 | 134.2 | Low | 04:30:36 - 05:00:36 | 5573 |
| Greenville | 04:45:36 | -12.3 | AT | Down | 25.0 | 134.1 | Low | 04:30:36 - 05:00:36 | 5573 |
| Quincy | 04:45:36 | -12.4 | AT | Down | 25.1 | 134.1 | Low | 04:30:36 - 05:00:36 | 5559 |
| Portola | 04:45:36 | -12.8 | AT | Down | 25.5 | 134.4 | Low | 04:30:36 - 05:00:36 | 5553 |
| Reno | 04:45:34 | -13.3 | AT | Down | 26.0 | 134.9 | Low | 04:30:34 - 05:00:34 | 5538 |
| Carson City | 04:45:35 | -13.6 | AT | Down | 26.3 | 134.8 | Low | 04:30:35 - 05:00:35 | 5514 |
| Yerington | 04:45:33 | -14.1 | AT | Down | 26.8 | 135.3 | Low | 04:30:33 - 05:00:33 | 5504 |
| Gardnerville | 04:45:35 | -13.8 | AT | Down | 26.5 | 134.8 | Low | 04:30:35 - 05:00:35 | 5498 |
| Hawthorne | 04:45:33 | -14.7 | AT | Down | 27.4 | 135.6 | Low | 04:30:33 - 05:00:33 | 5474 |
| Tonopah | 04:45:30 | -15.8 | AT | Down | 28.5 | 136.8 | Low | 04:30:30 - 05:00:30 | 5447 |
| Lee Vining | 04:45:36 | -14.8 | AT | Down | 27.5 | 135.0 | Low | 04:30:36 - 05:00:36 | 5434 |
| Bishop | 04:45:35 | -15.6 | AT | Down | 28.4 | 135.4 | Low | 04:30:35 - 05:00:35 | 5395 |
| Beatty | 04:45:31 | -16.9 | AT | Down | 29.6 | 136.8 | Low | 04:30:31 - 05:00:31 | 5368 |
| Indian Springs | 04:45:29 | -17.7 | AT | Down | 30.4 | 137.6 | Up | 04:30:29 - 05:00:29 | 5348 |
| Henderson | 04:45:27 | -18.5 | Dark | Down | 31.2 | 138.1 | Up | 04:30:27 - 05:00:27 | 5311 |
| Patrick | 04:45:25 | -19.6 | Dark | Down | 32.3 | 138.9 | Up | 04:30:25 - 05:00:25 | 5269 |
| Kingman/Dolan Springs | 04:45:26 | -19.6 | Dark | Down | 32.3 | 138.6 | Up | 04:30:26 - 05:00:26 | 5252 |
| Laughlin/Bullhead City | 04:45:28 | -19.3 | Dark | Down | 32.1 | 138.1 | Up | 04:30:28 - 05:00:28 | 5249 |
| Mohave Valley | 04:45:29 | -19.5 | Dark | Down | 32.3 | 138.0 | Up | 04:30:29 - 05:00:29 | 5229 |
| Lake Havasu City | 04:45:28 | -20.0 | Dark | Down | 32.7 | 138.1 | Up | 04:30:28 - 05:00:28 | 5200 |
| Parker | 04:45:29 | -20.2 | Dark | Down | 33.0 | 137.9 | Up | 04:30:29 - 05:00:29 | 5174 |
| Wildwood | 04:45:42 | -17.8 | AT | Down | 30.6 | 134.0 | Up | 04:30:42 - 05:00:42 | 5158 |
| George/Scottsdale | 04:45:22 | -21.9 | Dark | Down | 34.6 | 140.1 | Up | 04:30:22 - 05:00:22 | 5147 |
| Idyllwild | 04:45:38 | -19.1 | Dark | Down | 31.9 | 135.5 | Up | 04:30:38 - 05:00:38 | 5138 |
| Calipatria | 04:45:34 | -20.3 | Dark | Down | 33.0 | 136.3 | Up | 04:30:34 - 05:00:34 | 5094 |
| Yuma | 04:45:33 | -21.1 | Dark | Down | 33.9 | 137.0 | Up | 04:30:33 - 05:00:33 | 5064 |
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, (2022/07/16 04:44UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 39.15 78 Nunki 18:55:15.9 -26:17:49 2.0 14.35 45 PPM 235666 19:13:15.6 -12:16:58 5.2 2.09 42 PPM 235474 19:05:38.1 -12:00:16 8.0 0.26 44 PPM 235462 19:05:10.6 -11:58:45 9.4 0.18 44 503858 19:04:42.7 -12:07:27 16.1 44 Positions are for J2000
Event circumstances last updated at 2022/03/15 01:06:49 UT
Marc W. Buie, Southwest Research Institute