Event between (603108) 14WB509 and star GA1160:00507619 with event index number of 2721827
Geocentric closest approach at 2025/10/26 11:46:11 UTC
J2000 position of star is 03:27:03.0 +27:50:36
Equinox of date position of star is 03:28:25.9 +27:55:18
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon.
Moon is 21% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 35.0 AU from the Sun
and 34.1 AU from the Earth.
The TNO is moving 22.3
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 107 seconds.
The 1-sigma cross-track error in the shadow position is
1533 km.
The sky-plane scale is
24747.6 km/arcsec.
The TNO has an absolute magnitude Hv=6.7
Diameter=274.2 km assuming a 5% albedo -- 12.4 sec chord
Diameter=111.9 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is SCATNEAR
Star training set for 603108, (2025/10/26 11:47UT) Object RA Dec mag sep mel Aldebaran 04:37:24.3 +16:33:33 0.8 19.52 159 44Zet Per 03:55:45.7 +31:57:29 2.8 7.12 155 PPM 092402 03:21:54.5 +29:08:25 4.5 1.90 148 PPM 092507 03:28:09.7 +28:48:12 7.3 0.88 149 PPM 092519 03:29:12.0 +27:50:24 9.8 0.16 149 603108 03:28:36.8 +27:55:55 16.4 149 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 29.1 km
RECON observability=1.0 and success probability=0.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 11:43:29 | -19.8 | Dark | Down | 43.9 | 259.6 | Up | 11:34:06 - 11:52:52 | 7378 |
| Kamloops | 11:43:59 | -28.8 | Dark | Down | 52.8 | 247.0 | Up | 11:34:36 - 11:53:22 | 7014 |
| Kelowna | 11:43:55 | -28.5 | Dark | Down | 52.6 | 249.0 | Up | 11:34:32 - 11:53:18 | 6943 |
| Peachland | 11:43:56 | -28.7 | Dark | Down | 52.8 | 248.8 | Up | 11:34:33 - 11:53:19 | 6928 |
| Summerland | 11:43:55 | -28.7 | Dark | Down | 52.8 | 249.1 | Up | 11:34:32 - 11:53:18 | 6914 |
| Penticton | 11:43:55 | -28.6 | Dark | Down | 52.8 | 249.3 | Up | 11:34:32 - 11:53:18 | 6909 |
| Oliver | 11:43:54 | -28.7 | Dark | Down | 52.9 | 249.7 | Up | 11:34:31 - 11:53:17 | 6873 |
| Anarchist Mountain Observatory | 11:43:53 | -28.6 | Dark | Down | 52.9 | 250.1 | Up | 11:34:30 - 11:53:16 | 6858 |
| Tonasket | 11:43:53 | -28.7 | Dark | Down | 53.0 | 250.4 | Up | 11:34:30 - 11:53:16 | 6825 |
| Okanogan | 11:43:53 | -28.9 | Dark | Down | 53.2 | 250.7 | Up | 11:34:30 - 11:53:16 | 6789 |
| Victoria | 11:44:04 | -31.3 | Dark | Down | 55.5 | 246.4 | Up | 11:34:41 - 11:53:27 | 6760 |
| Brewster | 11:43:53 | -29.1 | Dark | Down | 53.4 | 250.8 | Up | 11:34:30 - 11:53:16 | 6759 |
| Manson/Chelan | 11:43:54 | -29.4 | Dark | Down | 53.7 | 250.7 | Up | 11:34:31 - 11:53:17 | 6732 |
| Wenatchee | 11:43:53 | -29.6 | Dark | Down | 54.0 | 251.2 | Up | 11:34:30 - 11:53:16 | 6681 |
| Ellensburg | 11:43:53 | -29.9 | Dark | Down | 54.3 | 251.5 | Up | 11:34:30 - 11:53:16 | 6636 |
| Yakima | 11:43:53 | -30.0 | Dark | Down | 54.4 | 252.0 | Up | 11:34:30 - 11:53:16 | 6594 |
| Toppenish/White Swan | 11:43:52 | -29.9 | Dark | Down | 54.4 | 252.4 | Up | 11:34:29 - 11:53:15 | 6573 |
| PNWRO | 11:43:47 | -29.0 | Dark | Down | 53.5 | 254.4 | Up | 11:34:24 - 11:53:10 | 6555 |
| Goldendale | 11:43:52 | -30.4 | Dark | Down | 54.8 | 252.8 | Up | 11:34:29 - 11:53:15 | 6510 |
| The Dalles | 11:43:53 | -30.7 | Dark | Down | 55.1 | 252.7 | Up | 11:34:30 - 11:53:16 | 6482 |
| Maupin | 11:43:52 | -30.7 | Dark | Down | 55.2 | 253.4 | Up | 11:34:29 - 11:53:15 | 6440 |
| Sisters | 11:43:52 | -31.2 | Dark | Down | 55.8 | 254.1 | Up | 11:34:29 - 11:53:15 | 6341 |
| Bend | 11:43:51 | -31.1 | Dark | Down | 55.6 | 254.7 | Up | 11:34:28 - 11:53:14 | 6320 |
| Oregon Observatory | 11:43:52 | -31.2 | Dark | Down | 55.8 | 254.8 | Up | 11:34:29 - 11:53:15 | 6300 |
| North Lake | 11:43:49 | -31.0 | Dark | Down | 55.6 | 256.2 | Up | 11:34:26 - 11:53:12 | 6239 |
| Dunrhomin | 11:43:01 | -19.8 | Dark | Down | 44.4 | 271.6 | Up | 11:33:38 - 11:52:24 | 6221 |
| CU-SBO | 11:43:00 | -19.9 | Dark | Down | 44.4 | 271.8 | Up | 11:33:37 - 11:52:23 | 6193 |
| Chiloquin | 11:43:51 | -31.8 | Dark | Down | 56.4 | 256.3 | Up | 11:34:28 - 11:53:14 | 6155 |
| Lakeview | 11:43:45 | -30.8 | Dark | Down | 55.4 | 258.2 | Up | 11:34:22 - 11:53:08 | 6135 |
| Klamath Falls | 11:43:49 | -31.9 | Dark | Down | 56.4 | 256.9 | Up | 11:34:26 - 11:53:12 | 6120 |
| Cedarville | 11:43:45 | -30.8 | Dark | Down | 55.4 | 259.3 | Up | 11:34:22 - 11:53:08 | 6068 |
| Fall River/Burney | 11:43:48 | -31.8 | Dark | Down | 56.4 | 259.0 | Up | 11:34:25 - 11:53:11 | 5999 |
| Susanville | 11:43:44 | -31.4 | Dark | Down | 56.0 | 260.5 | Up | 11:34:21 - 11:53:07 | 5942 |
| Gimple | 11:43:45 | -31.6 | Dark | Down | 56.2 | 260.7 | Up | 11:34:22 - 11:53:08 | 5909 |
| Greenville | 11:43:45 | -31.7 | Dark | Down | 56.2 | 260.7 | Up | 11:34:22 - 11:53:08 | 5908 |
| Quincy | 11:43:45 | -31.7 | Dark | Down | 56.3 | 261.0 | Up | 11:34:22 - 11:53:08 | 5887 |
| Portola | 11:43:43 | -31.4 | Dark | Down | 55.9 | 261.5 | Up | 11:34:20 - 11:53:06 | 5880 |
| Reno | 11:43:40 | -30.9 | Dark | Down | 55.5 | 262.4 | Up | 11:34:17 - 11:53:03 | 5861 |
| Carson City | 11:43:40 | -31.0 | Dark | Down | 55.5 | 263.0 | Up | 11:34:17 - 11:53:03 | 5823 |
| Yerington | 11:43:38 | -30.5 | Dark | Down | 55.1 | 263.7 | Up | 11:34:15 - 11:53:01 | 5812 |
| Gardnerville | 11:43:39 | -31.0 | Dark | Down | 55.5 | 263.4 | Up | 11:34:16 - 11:53:02 | 5798 |
| Hawthorne | 11:43:36 | -30.2 | Dark | Down | 54.7 | 264.8 | Up | 11:34:13 - 11:52:59 | 5770 |
| Tonopah | 11:43:30 | -29.2 | Dark | Down | 53.6 | 266.4 | Up | 11:34:07 - 11:52:53 | 5744 |
| Lee Vining | 11:43:36 | -30.7 | Dark | Down | 55.1 | 265.2 | Up | 11:34:13 - 11:52:59 | 5702 |
| Bishop | 11:43:33 | -30.2 | Dark | Down | 54.6 | 266.6 | Up | 11:34:10 - 11:52:56 | 5649 |
| Beatty | 11:43:27 | -28.9 | Dark | Down | 53.3 | 268.2 | Up | 11:34:04 - 11:52:50 | 5627 |
| Indian Springs | 11:43:24 | -28.1 | Dark | Down | 52.5 | 269.3 | Up | 11:34:01 - 11:52:47 | 5612 |
| Henderson | 11:43:21 | -27.6 | Dark | Down | 51.9 | 270.4 | Up | 11:33:58 - 11:52:44 | 5567 |
| Patrick | 11:43:17 | -26.8 | Dark | Down | 51.0 | 271.8 | Up | 11:33:54 - 11:52:40 | 5522 |
| Kingman/Dolan Springs | 11:43:17 | -26.9 | Dark | Down | 51.2 | 272.0 | Up | 11:33:54 - 11:52:40 | 5494 |
| Laughlin/Bullhead City | 11:43:19 | -27.4 | Dark | Down | 51.6 | 271.8 | Up | 11:33:56 - 11:52:42 | 5481 |
| Mohave Valley | 11:43:18 | -27.4 | Dark | Down | 51.6 | 272.1 | Up | 11:33:55 - 11:52:41 | 5452 |
| Lake Havasu City | 11:43:17 | -27.2 | Dark | Down | 51.4 | 272.7 | Up | 11:33:54 - 11:52:40 | 5414 |
| George/Scottsdale | 11:43:09 | -25.2 | Dark | Down | 49.3 | 274.9 | Up | 11:33:46 - 11:52:32 | 5382 |
| Parker | 11:43:16 | -27.2 | Dark | Down | 51.3 | 273.2 | Up | 11:33:53 - 11:52:39 | 5377 |
| Wildwood | 11:43:31 | -30.7 | Dark | Down | 54.8 | 271.0 | Up | 11:34:08 - 11:52:54 | 5293 |
| Idyllwild | 11:43:24 | -29.2 | Dark | Down | 53.3 | 272.5 | Up | 11:34:01 - 11:52:47 | 5287 |
| Calipatria | 11:43:19 | -28.3 | Dark | Down | 52.3 | 273.9 | Up | 11:33:56 - 11:52:42 | 5243 |
| Yuma | 11:43:16 | -27.5 | Dark | Down | 51.5 | 274.8 | Up | 11:33:53 - 11:52:39 | 5214 |
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 603108, (2025/10/26 11:47UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 19.52 159 44Zet Per 03:54:07.9 +31:53:01 2.8 7.12 155 PPM 092402 03:20:20.3 +29:02:54 4.5 1.90 148 PPM 092507 03:26:35.5 +28:42:52 7.3 0.88 149 PPM 092519 03:27:38.3 +27:45:06 9.8 0.16 149 603108 03:27:03.0 +27:50:36 16.4 149 Positions are for J2000
Event circumstances last updated at 2022/10/28 03:07:01 UT
Marc W. Buie, Southwest Research Institute