Event between (32532) Thereus and star GA0820:04008870 with event index number of 2195928
Geocentric closest approach at 2023/03/16 09:36:40 UTC
J2000 position of star is 10:35:42.4 -07:11:25
Equinox of date position of star is 10:36:51.0 -07:18:31
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 117 degrees from the moon.
Moon is 35% illuminated.
TNO apparent brightness V=19.9
[RECON map]
TNO is 11.7 AU from the Sun
and 10.7 AU from the Earth.
The TNO is moving 21.9
km/sec on the sky relative to the star, or,
10.1 arcsec/hr.
The 1-sigma error in the time of the event is 25 seconds.
The 1-sigma cross-track error in the shadow position is
458 km.
The sky-plane scale is
7786.2 km/arcsec.
The TNO has an absolute magnitude Hv=9.2
Diameter=86.3 km assuming a 5% albedo -- 3.9 sec chord
Diameter=35.2 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
Star training set for 32532, (2023/03/16 09:37UT) Object RA Dec mag sep mel Regulus 10:09:36.3 +11:51:10 1.3 20.33 133 Alphard 09:28:43.7 -08:45:37 2.0 16.93 129 PPM 193503 10:32:08.5 -07:45:26 6.2 1.25 117 PPM 193641 10:39:42.3 -07:18:10 7.9 0.70 116 PPM 193592 10:37:25.1 -07:27:09 9.6 0.20 117 32532 10:36:52.4 -07:18:40 16.7 116 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 8.0 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 09:36:45 | -31.4 | Dark | Down | 15.5 | 235.4 | Really Low | 09:34:10 - 09:39:20 | 6221 |
| Dunrhomin | 09:35:54 | -39.2 | Dark | Down | 21.6 | 239.2 | Low | 09:33:19 - 09:38:29 | 5929 |
| CU-SBO | 09:35:53 | -39.4 | Dark | Down | 21.8 | 239.2 | Low | 09:33:18 - 09:38:28 | 5917 |
| Kelowna | 09:37:03 | -38.2 | Dark | Down | 23.4 | 223.6 | Low | 09:34:28 - 09:39:38 | 5903 |
| Kamloops | 09:37:08 | -37.8 | Dark | Down | 23.2 | 222.5 | Low | 09:34:33 - 09:39:43 | 5902 |
| Peachland | 09:37:03 | -38.4 | Dark | Down | 23.6 | 223.3 | Low | 09:34:28 - 09:39:38 | 5893 |
| Penticton | 09:37:02 | -38.5 | Dark | Down | 23.7 | 223.6 | Low | 09:34:27 - 09:39:37 | 5893 |
| Summerland | 09:37:02 | -38.5 | Dark | Down | 23.7 | 223.4 | Low | 09:34:27 - 09:39:37 | 5892 |
| Anarchist Mountain Observatory | 09:37:00 | -38.9 | Dark | Down | 24.0 | 223.9 | Low | 09:34:25 - 09:39:35 | 5885 |
| Oliver | 09:37:01 | -38.8 | Dark | Down | 23.9 | 223.7 | Low | 09:34:26 - 09:39:36 | 5884 |
| Tonasket | 09:36:58 | -39.2 | Dark | Down | 24.2 | 223.9 | Low | 09:34:23 - 09:39:33 | 5874 |
| Okanogan | 09:36:58 | -39.6 | Dark | Down | 24.5 | 223.9 | Low | 09:34:23 - 09:39:33 | 5861 |
| Brewster | 09:36:58 | -39.9 | Dark | Down | 24.8 | 223.8 | Low | 09:34:23 - 09:39:33 | 5848 |
| Manson/Chelan | 09:36:58 | -40.2 | Dark | Down | 25.2 | 223.5 | Low | 09:34:23 - 09:39:33 | 5833 |
| Wenatchee | 09:36:56 | -40.6 | Dark | Down | 25.6 | 223.5 | Low | 09:34:21 - 09:39:31 | 5814 |
| PNWRO | 09:36:48 | -41.4 | Dark | Down | 25.9 | 225.3 | Low | 09:34:13 - 09:39:23 | 5808 |
| Ellensburg | 09:36:56 | -41.1 | Dark | Down | 26.0 | 223.4 | Low | 09:34:21 - 09:39:31 | 5796 |
| Yakima | 09:36:54 | -41.4 | Dark | Down | 26.3 | 223.5 | Low | 09:34:19 - 09:39:29 | 5783 |
| Toppenish/White Swan | 09:36:53 | -41.6 | Dark | Down | 26.4 | 223.7 | Low | 09:34:18 - 09:39:28 | 5781 |
| Victoria | 09:37:08 | -40.6 | Dark | Down | 26.1 | 220.1 | Low | 09:34:33 - 09:39:43 | 5765 |
| Goldendale | 09:36:52 | -42.2 | Dark | Down | 27.0 | 223.5 | Low | 09:34:17 - 09:39:27 | 5751 |
| The Dalles | 09:36:52 | -42.5 | Dark | Down | 27.3 | 223.2 | Low | 09:34:17 - 09:39:27 | 5734 |
| Maupin | 09:36:50 | -42.8 | Dark | Down | 27.6 | 223.5 | Low | 09:34:15 - 09:39:25 | 5723 |
| Sisters | 09:36:48 | -43.8 | Dark | Down | 28.5 | 223.3 | Low | 09:34:13 - 09:39:23 | 5679 |
| Bend | 09:36:47 | -43.9 | Dark | Down | 28.5 | 223.6 | Low | 09:34:12 - 09:39:22 | 5678 |
| Oregon Observatory | 09:36:47 | -44.1 | Dark | Down | 28.7 | 223.6 | Low | 09:34:12 - 09:39:22 | 5668 |
| North Lake | 09:36:43 | -44.5 | Dark | Down | 28.9 | 224.3 | Low | 09:34:08 - 09:39:18 | 5659 |
| Lakeview | 09:36:38 | -45.2 | Dark | Down | 29.4 | 225.3 | Low | 09:34:03 - 09:39:13 | 5635 |
| Cedarville | 09:36:35 | -45.7 | Dark | Down | 29.7 | 225.7 | Low | 09:34:00 - 09:39:10 | 5614 |
| Chiloquin | 09:36:44 | -45.4 | Dark | Down | 29.9 | 223.7 | Low | 09:34:09 - 09:39:19 | 5606 |
| Klamath Falls | 09:36:42 | -45.7 | Dark | Down | 30.1 | 223.9 | Up | 09:34:07 - 09:39:17 | 5595 |
| Fall River/Burney | 09:36:37 | -46.6 | Dark | Down | 30.7 | 224.7 | Up | 09:34:02 - 09:39:12 | 5558 |
| Susanville | 09:36:32 | -46.8 | Dark | Down | 30.8 | 225.7 | Up | 09:33:57 - 09:39:07 | 5554 |
| Tonopah | 09:36:14 | -47.2 | Dark | Down | 30.4 | 229.9 | Up | 09:33:39 - 09:38:49 | 5552 |
| Reno | 09:36:27 | -47.2 | Dark | Down | 30.9 | 226.8 | Up | 09:33:52 - 09:39:02 | 5542 |
| Yerington | 09:36:23 | -47.4 | Dark | Down | 30.9 | 227.7 | Up | 09:33:48 - 09:38:58 | 5537 |
| Gimple | 09:36:32 | -47.1 | Dark | Down | 31.1 | 225.6 | Up | 09:33:57 - 09:39:07 | 5536 |
| Portola | 09:36:29 | -47.2 | Dark | Down | 31.1 | 226.1 | Up | 09:33:54 - 09:39:04 | 5534 |
| Greenville | 09:36:32 | -47.2 | Dark | Down | 31.1 | 225.5 | Up | 09:33:57 - 09:39:07 | 5534 |
| Hawthorne | 09:36:20 | -47.5 | Dark | Down | 31.0 | 228.4 | Up | 09:33:45 - 09:38:55 | 5532 |
| Indian Springs | 09:36:05 | -47.6 | Dark | Down | 30.5 | 231.9 | Up | 09:33:30 - 09:38:40 | 5527 |
| Carson City | 09:36:26 | -47.5 | Dark | Down | 31.2 | 227.0 | Up | 09:33:51 - 09:39:01 | 5527 |
| Quincy | 09:36:31 | -47.3 | Dark | Down | 31.3 | 225.6 | Up | 09:33:56 - 09:39:06 | 5525 |
| Patrick | 09:35:56 | -47.5 | Dark | Down | 30.0 | 234.0 | Up | 09:33:21 - 09:38:31 | 5522 |
| Henderson | 09:36:01 | -47.7 | Dark | Down | 30.3 | 232.8 | Up | 09:33:26 - 09:38:36 | 5521 |
| Gardnerville | 09:36:24 | -47.7 | Dark | Down | 31.3 | 227.2 | Up | 09:33:49 - 09:38:59 | 5518 |
| Beatty | 09:36:09 | -47.9 | Dark | Down | 30.9 | 230.8 | Up | 09:33:34 - 09:38:44 | 5512 |
| Kingman/Dolan Springs | 09:35:55 | -47.8 | Dark | Down | 30.3 | 233.9 | Up | 09:33:20 - 09:38:30 | 5506 |
| George/Scottsdale | 09:35:44 | -47.6 | Dark | Down | 29.6 | 236.4 | Low | 09:33:09 - 09:38:19 | 5493 |
| Lee Vining | 09:36:19 | -48.2 | Dark | Down | 31.6 | 228.2 | Up | 09:33:44 - 09:38:54 | 5493 |
| Laughlin/Bullhead City | 09:35:57 | -48.1 | Dark | Down | 30.6 | 233.5 | Up | 09:33:22 - 09:38:32 | 5490 |
| Bishop | 09:36:15 | -48.4 | Dark | Down | 31.6 | 229.1 | Up | 09:33:40 - 09:38:50 | 5486 |
| Mohave Valley | 09:35:56 | -48.3 | Dark | Down | 30.8 | 233.6 | Up | 09:33:21 - 09:38:31 | 5477 |
| Lake Havasu City | 09:35:54 | -48.5 | Dark | Down | 30.9 | 234.0 | Up | 09:33:19 - 09:38:29 | 5465 |
| Parker | 09:35:53 | -48.7 | Dark | Down | 31.0 | 234.2 | Up | 09:33:18 - 09:38:28 | 5448 |
| Yuma | 09:35:48 | -49.9 | Dark | Down | 32.1 | 234.6 | Up | 09:33:13 - 09:38:23 | 5364 |
| Calipatria | 09:35:52 | -50.1 | Dark | Down | 32.5 | 233.7 | Up | 09:33:17 - 09:38:27 | 5361 |
| Idyllwild | 09:35:58 | -50.3 | Dark | Down | 32.9 | 232.3 | Up | 09:33:23 - 09:38:33 | 5359 |
| Wildwood | 09:36:04 | -51.1 | Dark | Down | 33.9 | 230.5 | Up | 09:33:29 - 09:38:39 | 5320 |
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 32532, (2023/03/16 09:37UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 20.33 133 Alphard 09:27:35.2 -08:39:30 2.0 16.93 129 PPM 193503 10:30:58.7 -07:38:15 6.2 1.25 117 PPM 193641 10:38:32.3 -07:10:54 7.9 0.70 116 PPM 193592 10:36:15.2 -07:19:55 9.6 0.20 117 32532 10:35:42.4 -07:11:25 16.7 117 Positions are for J2000
Event circumstances last updated at 2022/09/29 04:14:09 UT
Marc W. Buie, Southwest Research Institute