Event between (32532) Thereus and star GA0800:04231377 with event index number of 2196053
Geocentric closest approach at 2026/04/28 06:44:30 UTC
J2000 position of star is 12:27:10.0 -08:36:08
Equinox of date position of star is 12:28:25.3 -08:44:12
Stellar brightness G=12.7,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 11 degrees from the moon.
Moon is 89% illuminated.
Apparent brightness V=19.5
[RECON map]
Object is 10.6 AU from the Sun
and 9.7 AU from the Earth.
Apparent velocity is 18.4
km/sec on the sky relative to the star, or,
9.4 arcsec/hr.
The 1-sigma error in the time of the event is 29 seconds.
The 1-sigma cross-track error in the shadow position is
479 km.
The sky-plane scale is
7036.1 km/arcsec.
The object has an absolute magnitude Hv=9.2
Diameter=86.3 km assuming a 5% albedo -- 4.7 sec chord
Diameter=35.2 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
Star training set for 32532, (2026/04/28 06:46UT) Object RA Dec mag sep mel Spica 13:26:35.0 -11:17:52 1.0 14.52 25 4Gam Crv 12:17:09.9 -17:41:17 2.6 9.36 17 21 Vir 12:35:08.4 -09:35:49 5.6 1.84 13 PPM 195519 12:29:16.8 -08:49:25 7.0 0.20 12 PPM 195492 12:28:12.5 -08:46:47 9.3 0.08 11 32532 12:28:31.5 -08:44:52 12.7 12 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 10.8 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 | 06:46:14 | -23.7 | Dark | Up | 25.6 | 207.7 | Low | 06:43:17 - 06:49:11 | 4461 |
| Dunrhomin | 06:45:29 | -35.5 | Dark | Up | 35.7 | 211.8 | Up | 06:42:32 - 06:48:26 | 4106 |
| Nikitin | 06:45:29 | -35.7 | Dark | Up | 35.9 | 211.9 | Up | 06:42:32 - 06:48:26 | 4097 |
| CU-SBO | 06:45:30 | -35.7 | Dark | Up | 35.9 | 211.8 | Up | 06:42:33 - 06:48:27 | 4091 |
| Kelowna | 06:46:48 | -24.2 | Dark | Up | 30.7 | 193.5 | Up | 06:43:51 - 06:49:45 | 3898 |
| Kamloops | 06:46:55 | -23.3 | Dark | Up | 30.0 | 192.4 | Low | 06:43:58 - 06:49:52 | 3893 |
| Penticton | 06:46:47 | -24.5 | Dark | Up | 31.0 | 193.4 | Up | 06:43:50 - 06:49:44 | 3882 |
| Peachland | 06:46:48 | -24.3 | Dark | Up | 30.8 | 193.2 | Up | 06:43:51 - 06:49:45 | 3882 |
| Summerland | 06:46:47 | -24.4 | Dark | Up | 30.9 | 193.3 | Up | 06:43:50 - 06:49:44 | 3880 |
| Anarchist Mountain Observatory | 06:46:45 | -25.0 | Dark | Up | 31.5 | 193.7 | Up | 06:43:48 - 06:49:42 | 3871 |
| Oliver | 06:46:46 | -24.8 | Dark | Up | 31.3 | 193.5 | Up | 06:43:49 - 06:49:43 | 3869 |
| Okanogan | 06:46:44 | -25.6 | Dark | Up | 32.1 | 193.5 | Up | 06:43:47 - 06:49:41 | 3836 |
| Brewster | 06:46:44 | -25.8 | Dark | Up | 32.4 | 193.3 | Up | 06:43:47 - 06:49:41 | 3817 |
| Manson/Chelan | 06:46:45 | -25.9 | Dark | Up | 32.7 | 193.0 | Up | 06:43:48 - 06:49:42 | 3793 |
| PNWRO | 06:46:35 | -28.0 | Dark | Up | 34.3 | 194.7 | Up | 06:43:38 - 06:49:32 | 3768 |
| Wenatchee | 06:46:44 | -26.3 | Dark | Up | 33.2 | 192.8 | Up | 06:43:47 - 06:49:41 | 3766 |
| Ellensburg | 06:46:43 | -26.7 | Dark | Up | 33.6 | 192.6 | Up | 06:43:46 - 06:49:40 | 3740 |
| Yakima | 06:46:43 | -27.1 | Dark | Up | 34.0 | 192.7 | Up | 06:43:46 - 06:49:40 | 3722 |
| Toppenish/White Swan | 06:46:41 | -27.3 | Dark | Up | 34.2 | 192.9 | Up | 06:43:44 - 06:49:38 | 3720 |
| Victoria | 06:46:57 | -24.6 | Dark | Up | 32.5 | 189.1 | Up | 06:44:00 - 06:49:54 | 3683 |
| The Dalles | 06:46:42 | -27.8 | Dark | Up | 35.1 | 192.1 | Up | 06:43:45 - 06:49:39 | 3651 |
| Maupin | 06:46:40 | -28.2 | Dark | Up | 35.5 | 192.2 | Up | 06:43:43 - 06:49:37 | 3637 |
| Bend | 06:46:38 | -29.2 | Dark | Up | 36.6 | 192.1 | Up | 06:43:41 - 06:49:35 | 3576 |
| Sisters | 06:46:40 | -28.9 | Dark | Up | 36.4 | 191.8 | Up | 06:43:43 - 06:49:37 | 3575 |
| Oregon Observatory | 06:46:38 | -29.4 | Dark | Up | 36.8 | 192.0 | Up | 06:43:41 - 06:49:35 | 3562 |
| Cedarville | 06:46:27 | -31.9 | Dark | Up | 38.9 | 193.9 | Up | 06:43:30 - 06:49:24 | 3506 |
| George/Scottsdale | 06:45:31 | -41.2 | Dark | Up | 44.0 | 206.6 | Up | 06:42:34 - 06:48:28 | 3491 |
| Patrick | 06:45:44 | -39.2 | Dark | Up | 43.1 | 203.4 | Up | 06:42:47 - 06:48:41 | 3487 |
| Chiloquin | 06:46:36 | -30.5 | Dark | Up | 38.1 | 191.7 | Up | 06:43:39 - 06:49:33 | 3479 |
| Klamath Falls | 06:46:35 | -30.8 | Dark | Up | 38.5 | 191.8 | Up | 06:43:38 - 06:49:32 | 3466 |
| Laughlin/Bullhead City | 06:45:47 | -39.3 | Dark | Up | 43.6 | 202.6 | Up | 06:42:50 - 06:48:44 | 3439 |
| Beatty | 06:46:01 | -37.1 | Dark | Up | 42.6 | 199.3 | Up | 06:43:04 - 06:48:58 | 3428 |
| Hawthorne | 06:46:13 | -35.1 | Dark | Up | 41.5 | 196.5 | Up | 06:43:16 - 06:49:10 | 3425 |
| Fall River/Burney | 06:46:30 | -32.0 | Dark | Up | 39.6 | 192.5 | Up | 06:43:33 - 06:49:27 | 3424 |
| Yerington | 06:46:16 | -34.5 | Dark | Up | 41.1 | 195.7 | Up | 06:43:19 - 06:49:13 | 3424 |
| Reno | 06:46:20 | -33.8 | Dark | Up | 40.7 | 194.7 | Up | 06:43:23 - 06:49:17 | 3422 |
| Lake Havasu City | 06:45:43 | -40.0 | Dark | Up | 44.1 | 203.1 | Up | 06:42:46 - 06:48:40 | 3415 |
| Portola | 06:46:24 | -33.4 | Dark | Up | 40.6 | 193.9 | Up | 06:43:27 - 06:49:21 | 3404 |
| Carson City | 06:46:19 | -34.2 | Dark | Up | 41.1 | 194.8 | Up | 06:43:22 - 06:49:16 | 3404 |
| Gimple | 06:46:25 | -33.0 | Dark | Up | 40.4 | 193.3 | Up | 06:43:28 - 06:49:22 | 3402 |
| Greenville | 06:46:26 | -33.0 | Dark | Up | 40.4 | 193.2 | Up | 06:43:29 - 06:49:23 | 3398 |
| Gardnerville | 06:46:18 | -34.4 | Dark | Up | 41.3 | 194.9 | Up | 06:43:21 - 06:49:15 | 3393 |
| Quincy | 06:46:25 | -33.2 | Dark | Up | 40.6 | 193.2 | Up | 06:43:28 - 06:49:22 | 3388 |
| Bishop | 06:46:08 | -36.2 | Dark | Up | 42.5 | 197.0 | Up | 06:43:11 - 06:49:05 | 3374 |
| Lee Vining | 06:46:13 | -35.5 | Dark | Up | 42.1 | 196.0 | Up | 06:43:16 - 06:49:10 | 3372 |
| Yuma | 06:45:38 | -41.6 | Dark | Up | 45.9 | 203.4 | Up | 06:42:41 - 06:48:35 | 3297 |
| Calipatria | 06:45:44 | -41.0 | Dark | Up | 45.8 | 202.1 | Up | 06:42:47 - 06:48:41 | 3277 |
| Idyllwild | 06:45:50 | -40.1 | Dark | Up | 45.6 | 200.3 | Up | 06:42:53 - 06:48:47 | 3254 |
| Wildwood | 06:45:59 | -39.2 | Dark | Up | 45.7 | 197.7 | Up | 06:43:02 - 06:48:56 | 3179 |
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, (2026/04/28 06:46UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 14.52 25 4Gam Crv 12:15:48.1 -17:32:30 2.6 9.36 17 21 Vir 12:33:46.6 -09:27:07 5.6 1.84 13 PPM 195519 12:27:55.2 -08:40:42 7.0 0.20 12 PPM 195492 12:26:50.9 -08:38:03 9.3 0.08 11 32532 12:27:10.0 -08:36:08 12.7 11 Positions are for J2000
Event circumstances last updated at 2024/04/22 04:04:32 UT
Marc W. Buie, Southwest Research Institute