Event between (32532) Thereus and star GA0800:04479981 with event index number of 2196157
Geocentric closest approach at 2028/04/18 07:39:54 UTC
J2000 position of star is 14:08:08.4 -09:40:08
Equinox of date position of star is 14:09:26.2 -09:47:00
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon.
Moon is 35% illuminated.
Apparent brightness V=19.0
[RECON map]
Object is 9.8 AU from the Sun
and 8.8 AU from the Earth.
Apparent velocity is 20.7
km/sec on the sky relative to the star, or,
11.6 arcsec/hr.
The 1-sigma error in the time of the event is 36 seconds.
The 1-sigma cross-track error in the shadow position is
498 km.
The sky-plane scale is
6407.3 km/arcsec.
The object has an absolute magnitude Hv=9.2
Diameter=86.3 km assuming a 5% albedo -- 4.2 sec chord
Diameter=35.2 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
Star training set for 32532, (2028/04/18 07:41UT) Object RA Dec mag sep mel Spica 13:26:41.3 -11:18:29 1.0 10.66 113 95 Vir 14:08:12.9 -09:26:50 5.3 0.50 104 PPM 228321 14:08:59.7 -10:27:26 8.1 0.67 103 PPM 197221 14:09:01.7 -09:43:53 9.8 0.17 103 32532 14:09:38.9 -09:48:08 14.7 103 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 11.8 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 | 07:41:54 | -26.3 | Dark | Down | 28.1 | 185.0 | Low | 07:38:24 - 07:45:25 | 5055 |
| Kamloops | 07:42:34 | -28.2 | Dark | Down | 29.1 | 168.9 | Low | 07:39:04 - 07:46:05 | 4492 |
| Kelowna | 07:42:31 | -29.0 | Dark | Down | 30.0 | 169.8 | Low | 07:39:00 - 07:46:01 | 4478 |
| Dunrhomin | 07:41:32 | -37.8 | Dark | Down | 39.9 | 186.6 | Up | 07:38:01 - 07:45:02 | 4475 |
| Nikitin | 07:41:31 | -38.0 | Dark | Down | 40.0 | 186.6 | Up | 07:38:01 - 07:45:02 | 4464 |
| Peachland | 07:42:32 | -29.1 | Dark | Down | 30.0 | 169.5 | Up | 07:39:01 - 07:46:02 | 4462 |
| Penticton | 07:42:31 | -29.3 | Dark | Down | 30.3 | 169.7 | Up | 07:39:01 - 07:46:02 | 4457 |
| CU-SBO | 07:41:31 | -38.1 | Dark | Down | 40.1 | 186.5 | Up | 07:38:01 - 07:45:02 | 4457 |
| Summerland | 07:42:32 | -29.3 | Dark | Down | 30.2 | 169.6 | Up | 07:39:01 - 07:46:02 | 4457 |
| Oliver | 07:42:31 | -29.7 | Dark | Down | 30.6 | 169.7 | Up | 07:39:00 - 07:46:01 | 4437 |
| Anarchist Mountain Observatory | 07:42:30 | -29.9 | Dark | Down | 30.8 | 169.9 | Up | 07:38:59 - 07:46:00 | 4435 |
| Okanogan | 07:42:31 | -30.5 | Dark | Down | 31.4 | 169.5 | Up | 07:39:00 - 07:46:01 | 4389 |
| Brewster | 07:42:31 | -30.8 | Dark | Down | 31.7 | 169.3 | Up | 07:39:00 - 07:46:01 | 4365 |
| Manson/Chelan | 07:42:32 | -30.9 | Dark | Down | 31.8 | 168.8 | Up | 07:39:01 - 07:46:02 | 4339 |
| Wenatchee | 07:42:31 | -31.4 | Dark | Down | 32.3 | 168.6 | Up | 07:39:01 - 07:46:02 | 4305 |
| PNWRO | 07:42:26 | -32.9 | Dark | Down | 33.8 | 170.1 | Up | 07:38:55 - 07:45:56 | 4275 |
| Ellensburg | 07:42:32 | -31.8 | Dark | Down | 32.6 | 168.3 | Up | 07:39:01 - 07:46:02 | 4271 |
| Victoria | 07:42:34 | -30.1 | Dark | Down | 30.7 | 165.2 | Up | 07:39:04 - 07:46:05 | 4258 |
| Yakima | 07:42:32 | -32.2 | Dark | Down | 33.0 | 168.2 | Up | 07:39:02 - 07:46:03 | 4246 |
| Toppenish/White Swan | 07:42:31 | -32.4 | Dark | Down | 33.3 | 168.4 | Up | 07:39:01 - 07:46:02 | 4239 |
| The Dalles | 07:42:33 | -33.2 | Dark | Down | 33.9 | 167.3 | Up | 07:39:02 - 07:46:03 | 4160 |
| Maupin | 07:42:33 | -33.6 | Dark | Down | 34.3 | 167.4 | Up | 07:39:02 - 07:46:03 | 4138 |
| Sisters | 07:42:33 | -34.4 | Dark | Down | 35.1 | 166.7 | Up | 07:39:02 - 07:46:03 | 4062 |
| Bend | 07:42:32 | -34.7 | Dark | Down | 35.4 | 166.9 | Up | 07:39:01 - 07:46:02 | 4057 |
| Oregon Observatory | 07:42:32 | -34.8 | Dark | Down | 35.5 | 166.8 | Up | 07:39:02 - 07:46:03 | 4041 |
| Cedarville | 07:42:26 | -37.3 | Dark | Down | 38.0 | 167.9 | Up | 07:38:55 - 07:45:56 | 3938 |
| Chiloquin | 07:42:32 | -36.1 | Dark | Down | 36.7 | 166.0 | Up | 07:39:02 - 07:46:03 | 3937 |
| Klamath Falls | 07:42:32 | -36.4 | Dark | Down | 37.1 | 166.1 | Up | 07:39:01 - 07:46:02 | 3917 |
| Fall River/Burney | 07:42:29 | -37.7 | Dark | Down | 38.3 | 166.3 | Up | 07:38:59 - 07:46:00 | 3853 |
| Reno | 07:42:22 | -39.3 | Dark | Down | 40.0 | 168.0 | Up | 07:38:51 - 07:45:52 | 3818 |
| Gimple | 07:42:26 | -38.6 | Dark | Down | 39.3 | 166.8 | Up | 07:38:56 - 07:45:57 | 3813 |
| Greenville | 07:42:27 | -38.6 | Dark | Down | 39.3 | 166.7 | Up | 07:38:56 - 07:45:57 | 3810 |
| Portola | 07:42:25 | -39.0 | Dark | Down | 39.7 | 167.2 | Up | 07:38:54 - 07:45:55 | 3808 |
| Yerington | 07:42:19 | -39.9 | Dark | Down | 40.7 | 168.7 | Up | 07:38:49 - 07:45:50 | 3808 |
| Hawthorne | 07:42:17 | -40.4 | Dark | Down | 41.2 | 169.3 | Up | 07:38:46 - 07:45:47 | 3798 |
| Quincy | 07:42:26 | -38.8 | Dark | Down | 39.5 | 166.6 | Up | 07:38:56 - 07:45:57 | 3796 |
| Carson City | 07:42:22 | -39.6 | Dark | Down | 40.4 | 167.9 | Up | 07:38:51 - 07:45:52 | 3794 |
| Patrick | 07:41:55 | -43.5 | Dark | Down | 44.8 | 175.2 | Up | 07:38:24 - 07:45:25 | 3790 |
| Gardnerville | 07:42:21 | -39.9 | Dark | Down | 40.6 | 168.0 | Up | 07:38:51 - 07:45:52 | 3779 |
| Beatty | 07:42:08 | -42.0 | Dark | Down | 43.1 | 171.5 | Up | 07:38:37 - 07:45:38 | 3767 |
| George/Scottsdale | 07:41:45 | -45.1 | Dark | Down | 46.6 | 177.8 | Up | 07:38:14 - 07:45:15 | 3760 |
| Laughlin/Bullhead City | 07:41:57 | -43.8 | Dark | Down | 45.0 | 174.2 | Up | 07:38:26 - 07:45:27 | 3741 |
| Lee Vining | 07:42:18 | -40.9 | Dark | Down | 41.7 | 168.6 | Up | 07:38:47 - 07:45:48 | 3738 |
| Bishop | 07:42:14 | -41.5 | Dark | Down | 42.4 | 169.4 | Up | 07:38:44 - 07:45:45 | 3727 |
| Lake Havasu City | 07:41:55 | -44.4 | Dark | Down | 45.7 | 174.5 | Up | 07:38:24 - 07:45:25 | 3704 |
| Yuma | 07:41:53 | -46.2 | Dark | Down | 47.4 | 173.8 | Up | 07:38:23 - 07:45:24 | 3559 |
| Calipatria | 07:41:57 | -45.8 | Dark | Down | 46.9 | 172.6 | Up | 07:38:27 - 07:45:28 | 3549 |
| Idyllwild | 07:42:03 | -45.2 | Dark | Down | 46.2 | 171.0 | Up | 07:38:32 - 07:45:33 | 3540 |
| Wildwood | 07:42:11 | -44.8 | Dark | Down | 45.6 | 168.5 | Up | 07:38:40 - 07:45:41 | 3479 |
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, (2028/04/18 07:41UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 10.66 113 95 Vir 14:06:42.6 -09:18:48 5.3 0.50 104 PPM 228321 14:07:29.0 -10:19:25 8.1 0.67 103 PPM 197221 14:07:31.3 -09:35:53 9.8 0.17 103 32532 14:08:08.4 -09:40:08 14.7 103 Positions are for J2000
Event circumstances last updated at 2024/04/24 02:53:15 UT
Marc W. Buie, Southwest Research Institute