Event between (24952) 97QJ4 and star GA1240:00669929 with event index number of 1477867
Geocentric closest approach at 2025/09/26 11:42:38 UTC
J2000 position of star is 03:18:14.9 +34:32:31
Equinox of date position of star is 03:19:44.8 +34:37:39
Stellar brightness G=12.8,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 169 degrees from the moon.
Moon is 19% illuminated.
Apparent brightness V=22.6
[RECON map]
Object is 30.6 AU from the Sun
and 30.0 AU from the Earth.
Apparent velocity is 14.2
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 210 seconds.
The 1-sigma cross-track error in the shadow position is
1790 km.
The sky-plane scale is
21776.4 km/arcsec.
The object has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 13.1 sec chord
Diameter=75.0 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is 3:2E
Star training set for 24952, (2025/09/26 11:41UT) Object RA Dec mag sep mel Aldebaran 04:37:24.0 +16:33:33 0.8 25.05 162 Algol 03:09:51.2 +41:03:10 2.1 6.72 162 PPM 068330 03:20:20.9 +34:18:54 5.9 0.33 169 PPM 068274 03:17:39.2 +34:46:55 7.2 0.48 169 PPM 068330 03:20:20.9 +34:18:54 5.9 0.33 169 PPM 068296 03:18:54.2 +34:37:34 10.7 0.20 169 24952 03:19:52.1 +34:38:04 12.8 169 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
4.3 sigma about the mid-time.
The median site spacing is 30.2 km
RECON observability=0.9 and success probability=29.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 11:41:20 | -12.3 | AT | Down | 64.8 | 235.9 | Up | 11:26:20 - 11:56:20 | 488 |
| Kamloops | 11:42:17 | -21.2 | Dark | Down | 71.9 | 211.0 | Up | 11:27:17 - 11:57:17 | -39 |
| Kelowna | 11:42:10 | -21.0 | Dark | Down | 72.3 | 214.5 | Up | 11:27:10 - 11:57:10 | -98 |
| Peachland | 11:42:11 | -21.2 | Dark | Down | 72.5 | 214.0 | Up | 11:27:11 - 11:57:11 | -116 |
| Summerland | 11:42:11 | -21.2 | Dark | Down | 72.6 | 214.5 | Up | 11:27:11 - 11:57:11 | -129 |
| Penticton | 11:42:10 | -21.2 | Dark | Down | 72.6 | 214.8 | Up | 11:27:10 - 11:57:10 | -133 |
| Oliver | 11:42:09 | -21.3 | Dark | Down | 72.9 | 215.5 | Up | 11:27:09 - 11:57:09 | -168 |
| Anarchist Mountain Observatory | 11:42:08 | -21.3 | Dark | Down | 73.0 | 216.3 | Up | 11:27:08 - 11:57:08 | -180 |
| Okanogan | 11:42:07 | -21.7 | Dark | Down | 73.6 | 217.0 | Up | 11:27:07 - 11:57:07 | -250 |
| Brewster | 11:42:07 | -21.9 | Dark | Down | 73.9 | 217.0 | Up | 11:27:07 - 11:57:07 | -282 |
| Manson/Chelan | 11:42:08 | -22.2 | Dark | Down | 74.2 | 216.5 | Up | 11:27:08 - 11:57:08 | -313 |
| Victoria | 11:42:25 | -23.9 | Dark | Down | 74.8 | 206.4 | Up | 11:27:25 - 11:57:25 | -326 |
| Wenatchee | 11:42:07 | -22.5 | Dark | Down | 74.6 | 217.1 | Up | 11:27:07 - 11:57:07 | -365 |
| Ellensburg | 11:42:07 | -22.8 | Dark | Down | 75.1 | 217.4 | Up | 11:27:07 - 11:57:07 | -412 |
| Yakima | 11:42:06 | -23.0 | Dark | Down | 75.4 | 218.3 | Up | 11:27:06 - 11:57:06 | -454 |
| PNWRO | 11:41:56 | -22.2 | Dark | Down | 75.1 | 224.2 | Up | 11:26:56 - 11:56:56 | -470 |
| Toppenish/White Swan | 11:42:05 | -23.0 | Dark | Down | 75.5 | 219.3 | Up | 11:27:05 - 11:57:05 | -471 |
| The Dalles | 11:42:07 | -23.8 | Dark | Down | 76.4 | 219.0 | Up | 11:27:07 - 11:57:07 | -571 |
| Dunrhomin | 11:40:30 | -14.5 | AT | Down | 68.7 | 262.7 | Up | 11:25:30 - 11:55:30 | -594 |
| Maupin | 11:42:05 | -23.9 | Dark | Down | 76.7 | 220.4 | Up | 11:27:05 - 11:57:05 | -611 |
| Nikitin | 11:40:29 | -14.5 | AT | Down | 68.7 | 263.2 | Up | 11:25:29 - 11:55:29 | -612 |
| CU-SBO | 11:40:29 | -14.6 | AT | Down | 68.8 | 263.3 | Up | 11:25:29 - 11:55:29 | -622 |
| Sisters | 11:42:06 | -24.6 | Dark | Down | 77.6 | 221.4 | Up | 11:27:06 - 11:57:06 | -714 |
| Bend | 11:42:04 | -24.5 | Dark | Down | 77.7 | 222.9 | Up | 11:27:04 - 11:57:04 | -732 |
| Oregon Observatory | 11:42:03 | -24.7 | Dark | Down | 77.9 | 223.1 | Up | 11:27:03 - 11:57:03 | -753 |
| Chiloquin | 11:42:02 | -25.5 | Dark | Down | 79.0 | 226.2 | Up | 11:27:02 - 11:57:02 | -900 |
| Klamath Falls | 11:42:02 | -25.6 | Dark | Down | 79.2 | 227.8 | Up | 11:27:02 - 11:57:02 | -933 |
| Cedarville | 11:41:51 | -24.8 | Dark | Down | 78.7 | 235.4 | Up | 11:26:51 - 11:56:51 | -962 |
| Fall River/Burney | 11:41:56 | -25.8 | Dark | Down | 79.7 | 233.9 | Up | 11:26:56 - 11:56:56 | -1046 |
| Gimple | 11:41:51 | -25.8 | Dark | Down | 79.9 | 239.6 | Up | 11:26:51 - 11:56:51 | -1125 |
| Greenville | 11:41:52 | -25.8 | Dark | Down | 80.0 | 239.4 | Up | 11:26:52 - 11:56:52 | -1127 |
| Portola | 11:41:48 | -25.6 | Dark | Down | 79.8 | 242.3 | Up | 11:26:48 - 11:56:48 | -1148 |
| Quincy | 11:41:51 | -25.9 | Dark | Down | 80.1 | 240.4 | Up | 11:26:51 - 11:56:51 | -1148 |
| Reno | 11:41:44 | -25.3 | Dark | Down | 79.5 | 245.2 | Up | 11:26:44 - 11:56:44 | -1157 |
| Carson City | 11:41:43 | -25.4 | Dark | Down | 79.6 | 247.0 | Up | 11:26:43 - 11:56:43 | -1194 |
| Yerington | 11:41:38 | -25.0 | Dark | Down | 79.3 | 249.3 | Up | 11:26:38 - 11:56:38 | -1195 |
| Gardnerville | 11:41:42 | -25.4 | Dark | Down | 79.7 | 248.3 | Up | 11:26:42 - 11:56:42 | -1218 |
| Hawthorne | 11:41:34 | -24.8 | Dark | Down | 79.0 | 252.6 | Up | 11:26:34 - 11:56:34 | -1228 |
| Lee Vining | 11:41:35 | -25.3 | Dark | Down | 79.6 | 254.6 | Up | 11:26:35 - 11:56:35 | -1301 |
| Beatty | 11:41:19 | -23.9 | Dark | Down | 78.0 | 263.0 | Up | 11:26:19 - 11:56:19 | -1337 |
| Bishop | 11:41:30 | -25.0 | Dark | Down | 79.2 | 258.8 | Up | 11:26:30 - 11:56:30 | -1341 |
| Patrick | 11:40:58 | -22.2 | Dark | Down | 75.8 | 271.5 | Up | 11:25:58 - 11:55:58 | -1393 |
| Laughlin/Bullhead City | 11:41:02 | -22.8 | Dark | Down | 76.3 | 272.2 | Up | 11:26:02 - 11:56:02 | -1443 |
| George/Scottsdale | 11:40:43 | -21.0 | Dark | Down | 74.0 | 278.4 | Up | 11:25:43 - 11:55:43 | -1494 |
| Lake Havasu City | 11:40:59 | -22.8 | Dark | Down | 76.1 | 275.0 | Up | 11:25:59 - 11:55:59 | -1503 |
| Idyllwild | 11:41:10 | -24.8 | Dark | Down | 77.9 | 277.9 | Up | 11:26:10 - 11:56:10 | -1663 |
| Calipatria | 11:41:02 | -24.1 | Dark | Down | 76.9 | 280.6 | Up | 11:26:02 - 11:56:02 | -1685 |
| Wildwood | 11:41:22 | -26.2 | Dark | Down | 79.5 | 276.0 | Up | 11:26:22 - 11:56:22 | -1687 |
| Yuma | 11:40:55 | -23.5 | Dark | Down | 76.1 | 282.2 | Up | 11:25:55 - 11:55:55 | -1698 |
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 24952, (2025/09/26 11:41UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 25.05 162 Algol 03:08:10.1 +40:57:20 2.1 6.72 162 PPM 068330 03:18:43.9 +34:13:22 5.9 0.33 169 PPM 068274 03:16:02.0 +34:41:18 7.2 0.48 169 PPM 068330 03:18:43.9 +34:13:22 5.9 0.33 169 PPM 068296 03:17:17.0 +34:32:00 10.7 0.20 169 24952 03:18:14.9 +34:32:31 12.8 169 Positions are for J2000
Event circumstances last updated at 2023/10/24 02:42:43 UT
Marc W. Buie, Southwest Research Institute