Event between (91205) 98US43 and star GA1040:01689504 with event index number of 1487668
Geocentric closest approach at 2025/11/23 04:59:33 UTC
J2000 position of star is 06:16:57.0 +15:06:07
Equinox of date position of star is 06:18:16.2 +15:05:32
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon.
Moon is 8% illuminated.
Apparent brightness V=24.1
[RECON map]
Object is 38.5 AU from the Sun
and 37.7 AU from the Earth.
Apparent velocity is 20.8
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 493 seconds.
The 1-sigma cross-track error in the shadow position is
3326 km.
The sky-plane scale is
27331.4 km/arcsec.
The object has an absolute magnitude Hv=8.2
Diameter=151.4 km assuming a 5% albedo -- 6.5 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is 3:2E
Star training set for 91205, (2025/11/23 04:51UT) Object RA Dec mag sep mel Betelgeuse 05:56:34.5 +07:24:35 0.4 9.36 159 Alhena 06:39:12.4 +16:22:30 1.9 5.16 167 PPM 122243 06:19:34.0 +14:22:16 6.2 0.77 166 PPM 122143 06:15:57.2 +15:16:58 8.3 0.63 167 PPM 122248 06:19:52.6 +15:08:48 8.9 0.35 167 91205 06:18:25.9 +15:05:27 16.5 167 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
1.8 sigma about the mid-time.
The median site spacing is 23.4 km
RECON observability=0.7 and success probability=1.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 05:02:20 | -45.7 | Dark | Down | 20.1 | 90.5 | Low | 04:47:20 - 05:17:20 | 10369 |
| Kelowna | 05:02:23 | -46.6 | Dark | Down | 20.7 | 90.9 | Low | 04:47:23 - 05:17:23 | 10298 |
| Peachland | 05:02:23 | -46.4 | Dark | Down | 20.5 | 90.6 | Low | 04:47:23 - 05:17:23 | 10297 |
| Victoria | 05:02:31 | -44.8 | Dark | Down | 18.1 | 87.5 | Really Low | 04:47:31 - 05:17:31 | 10289 |
| Summerland | 05:02:24 | -46.6 | Dark | Down | 20.6 | 90.6 | Low | 04:47:24 - 05:17:24 | 10286 |
| Penticton | 05:02:25 | -46.7 | Dark | Down | 20.6 | 90.7 | Low | 04:47:25 - 05:17:25 | 10279 |
| Oliver | 05:02:26 | -46.8 | Dark | Down | 20.6 | 90.6 | Low | 04:47:26 - 05:17:26 | 10255 |
| Anarchist Mountain Observatory | 05:02:25 | -47.0 | Dark | Down | 20.8 | 90.7 | Low | 04:47:25 - 05:17:25 | 10241 |
| Okanogan | 05:02:29 | -47.2 | Dark | Down | 20.6 | 90.3 | Low | 04:47:29 - 05:17:29 | 10201 |
| Brewster | 05:02:31 | -47.2 | Dark | Down | 20.5 | 90.0 | Low | 04:47:31 - 05:17:31 | 10187 |
| Sleaford | 05:01:59 | -52.0 | Dark | Down | 28.8 | 102.8 | Low | 04:46:59 - 05:16:59 | 10183 |
| Manson/Chelan | 05:02:32 | -47.1 | Dark | Down | 20.3 | 89.7 | Low | 04:47:32 - 05:17:32 | 10180 |
| Wenatchee | 05:02:33 | -47.2 | Dark | Down | 20.1 | 89.4 | Low | 04:47:33 - 05:17:33 | 10151 |
| Ellensburg | 05:02:36 | -47.2 | Dark | Down | 20.0 | 89.1 | Really Low | 04:47:36 - 05:17:36 | 10127 |
| Yakima | 05:02:38 | -47.4 | Dark | Down | 20.0 | 88.9 | Really Low | 04:47:38 - 05:17:38 | 10099 |
| Toppenish/White Swan | 05:02:38 | -47.5 | Dark | Down | 20.1 | 89.0 | Low | 04:47:38 - 05:17:38 | 10081 |
| The Dalles | 05:02:42 | -47.3 | Dark | Down | 19.5 | 88.1 | Really Low | 04:47:42 - 05:17:42 | 10042 |
| PNWRO | 05:02:39 | -48.6 | Dark | Down | 21.1 | 89.9 | Low | 04:47:39 - 05:17:39 | 10023 |
| Maupin | 05:02:43 | -47.6 | Dark | Down | 19.6 | 88.0 | Really Low | 04:47:43 - 05:17:43 | 10010 |
| Sisters | 05:02:48 | -47.6 | Dark | Down | 19.2 | 87.4 | Really Low | 04:47:48 - 05:17:48 | 9958 |
| Bend | 05:02:48 | -47.8 | Dark | Down | 19.4 | 87.5 | Really Low | 04:47:48 - 05:17:48 | 9935 |
| Oregon Observatory | 05:02:49 | -47.8 | Dark | Down | 19.3 | 87.4 | Really Low | 04:47:49 - 05:17:49 | 9925 |
| Chiloquin | 05:02:55 | -48.0 | Dark | Down | 19.0 | 86.6 | Really Low | 04:47:55 - 05:17:55 | 9837 |
| Klamath Falls | 05:02:56 | -48.1 | Dark | Down | 19.0 | 86.6 | Really Low | 04:47:56 - 05:17:56 | 9809 |
| Cedarville | 05:02:58 | -49.5 | Dark | Down | 20.2 | 87.4 | Low | 04:47:58 - 05:17:58 | 9720 |
| Fall River/Burney | 05:03:00 | -48.8 | Dark | Down | 19.2 | 86.4 | Really Low | 04:48:00 - 05:18:00 | 9711 |
| Greenville | 05:03:04 | -49.4 | Dark | Down | 19.5 | 86.4 | Really Low | 04:48:04 - 05:18:04 | 9630 |
| Gimple | 05:03:03 | -49.4 | Dark | Down | 19.6 | 86.5 | Really Low | 04:48:03 - 05:18:03 | 9628 |
| Quincy | 05:03:04 | -49.4 | Dark | Down | 19.5 | 86.3 | Really Low | 04:48:04 - 05:18:04 | 9614 |
| Portola | 05:03:05 | -49.8 | Dark | Down | 19.9 | 86.6 | Really Low | 04:48:05 - 05:18:05 | 9593 |
| Reno | 05:03:04 | -50.4 | Dark | Down | 20.4 | 86.9 | Low | 04:48:04 - 05:18:04 | 9556 |
| Carson City | 05:03:07 | -50.5 | Dark | Down | 20.4 | 86.8 | Low | 04:48:07 - 05:18:07 | 9527 |
| Gardnerville | 05:03:07 | -50.6 | Dark | Down | 20.4 | 86.7 | Low | 04:48:07 - 05:18:07 | 9506 |
| Yerington | 05:03:07 | -51.0 | Dark | Down | 20.8 | 87.1 | Low | 04:48:07 - 05:18:07 | 9496 |
| Hawthorne | 05:03:07 | -51.6 | Dark | Down | 21.2 | 87.3 | Low | 04:48:07 - 05:18:07 | 9446 |
| Lee Vining | 05:03:10 | -51.4 | Dark | Down | 20.8 | 86.7 | Low | 04:48:10 - 05:18:10 | 9412 |
| Bishop | 05:03:11 | -52.1 | Dark | Down | 21.4 | 86.9 | Low | 04:48:11 - 05:18:11 | 9345 |
| Beatty | 05:03:11 | -53.5 | Dark | Down | 22.7 | 87.7 | Low | 04:48:11 - 05:18:11 | 9266 |
| Dunrhomin | 05:02:43 | -60.2 | Dark | Down | 31.5 | 96.8 | Up | 04:47:43 - 05:17:43 | 9266 |
| Nikitin | 05:02:43 | -60.3 | Dark | Down | 31.5 | 96.7 | Up | 04:47:43 - 05:17:43 | 9251 |
| CU-SBO | 05:02:44 | -60.3 | Dark | Down | 31.4 | 96.6 | Up | 04:47:44 - 05:17:44 | 9247 |
| Wildwood | 05:03:23 | -52.7 | Dark | Down | 21.0 | 85.6 | Low | 04:48:23 - 05:18:23 | 9073 |
| Patrick | 05:03:14 | -56.1 | Dark | Down | 24.9 | 88.8 | Low | 04:48:14 - 05:18:14 | 9067 |
| Laughlin/Bullhead City | 05:03:15 | -55.7 | Dark | Down | 24.4 | 88.2 | Low | 04:48:15 - 05:18:15 | 9063 |
| Lake Havasu City | 05:03:17 | -56.0 | Dark | Down | 24.6 | 88.1 | Low | 04:48:17 - 05:18:17 | 8998 |
| Idyllwild | 05:03:23 | -54.3 | Dark | Down | 22.6 | 86.5 | Low | 04:48:23 - 05:18:23 | 8994 |
| Calipatria | 05:03:23 | -55.4 | Dark | Down | 23.5 | 86.8 | Low | 04:48:23 - 05:18:23 | 8909 |
| George/Scottsdale | 05:03:15 | -58.2 | Dark | Down | 26.6 | 89.1 | Low | 04:48:15 - 05:18:15 | 8867 |
| Yuma | 05:03:23 | -56.2 | Dark | Down | 24.2 | 87.1 | Low | 04:48:23 - 05:18:23 | 8848 |
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 91205, (2025/11/23 04:51UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 9.36 159 Alhena 06:37:42.8 +16:23:56 1.9 5.16 167 PPM 122243 06:18:05.6 +14:22:58 6.2 0.77 166 PPM 122143 06:14:28.1 +15:17:32 8.3 0.63 167 PPM 122248 06:18:23.7 +15:09:31 8.9 0.35 167 91205 06:16:57.0 +15:06:07 16.5 167 Positions are for J2000
Event circumstances last updated at 2023/01/24 02:36:57 UT
Marc W. Buie, Southwest Research Institute