Event between (505476) 13UL15 and star GA0980:00157071 with event index number of 2397494
Geocentric closest approach at 2025/11/01 10:54:10 UTC
J2000 position of star is 01:49:53.8 +09:32:54
Equinox of date position of star is 01:51:03.4 +09:39:23
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 46 degrees from the moon.
Moon is 78% illuminated.
TNO apparent brightness V=23.2
[RECON map]
TNO is 44.0 AU from the Sun
and 43.0 AU from the Earth.
The TNO is moving 24.9
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 246 seconds.
The 1-sigma cross-track error in the shadow position is
2984 km.
The sky-plane scale is
31218.3 km/arcsec.
The TNO has an absolute magnitude Hv=6.8
Diameter=288.4 km assuming a 5% albedo -- 10.8 sec chord
Diameter=117.7 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 505476, (2025/11/01 10:54UT) Object RA Dec mag sep mel Aldebaran 04:37:24.4 +16:33:33 0.8 40.96 87 6Bet Ari 01:56:04.3 +20:56:00 2.6 11.32 51 110Omi Psc 01:46:45.7 +09:17:12 4.3 1.18 45 PPM 145099 01:55:34.5 +10:04:35 8.4 1.13 47 PPM 145007 01:50:37.4 +09:48:43 9.8 0.21 46 505476 01:51:15.9 +09:40:32 16.3 46 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
3.7 sigma about the mid-time.
The median site spacing is 27.4 km
RECON observability=1.0 and success probability=4.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:50:45 | -29.2 | Dark | Down | 19.6 | 260.2 | Really Low | 10:35:45 - 11:05:45 | -6082 |
| Kamloops | 10:51:01 | -38.1 | Dark | Down | 28.6 | 248.4 | Low | 10:36:01 - 11:06:01 | -6203 |
| Kelowna | 10:50:58 | -37.9 | Dark | Down | 28.4 | 249.6 | Low | 10:35:58 - 11:05:58 | -6286 |
| Peachland | 10:50:59 | -38.2 | Dark | Down | 28.6 | 249.4 | Low | 10:35:59 - 11:05:59 | -6296 |
| Summerland | 10:50:59 | -38.2 | Dark | Down | 28.6 | 249.6 | Low | 10:35:59 - 11:05:59 | -6311 |
| Penticton | 10:50:59 | -38.1 | Dark | Down | 28.5 | 249.7 | Low | 10:35:59 - 11:05:59 | -6318 |
| Oliver | 10:50:58 | -38.3 | Dark | Down | 28.7 | 249.9 | Low | 10:35:58 - 11:05:58 | -6353 |
| Anarchist Mountain Observatory | 10:50:57 | -38.3 | Dark | Down | 28.6 | 250.2 | Low | 10:35:57 - 11:05:57 | -6370 |
| Victoria | 10:51:03 | -40.8 | Dark | Down | 31.2 | 246.8 | Up | 10:36:03 - 11:06:03 | -6398 |
| Tonasket | 10:50:57 | -38.4 | Dark | Down | 28.7 | 250.3 | Low | 10:35:57 - 11:05:57 | -6401 |
| Okanogan | 10:50:57 | -38.7 | Dark | Down | 29.0 | 250.3 | Low | 10:35:57 - 11:05:57 | -6433 |
| Brewster | 10:50:56 | -38.9 | Dark | Down | 29.2 | 250.3 | Low | 10:35:56 - 11:05:56 | -6459 |
| Manson/Chelan | 10:50:57 | -39.2 | Dark | Down | 29.5 | 250.1 | Low | 10:35:57 - 11:05:57 | -6479 |
| Wenatchee | 10:50:56 | -39.5 | Dark | Down | 29.7 | 250.2 | Low | 10:35:56 - 11:05:56 | -6525 |
| Ellensburg | 10:50:56 | -39.8 | Dark | Down | 30.0 | 250.2 | Up | 10:35:56 - 11:05:56 | -6566 |
| Yakima | 10:50:56 | -40.0 | Dark | Down | 30.2 | 250.4 | Up | 10:35:56 - 11:05:56 | -6606 |
| Toppenish/White Swan | 10:50:56 | -40.0 | Dark | Down | 30.1 | 250.7 | Up | 10:35:56 - 11:05:56 | -6629 |
| Pasco | 10:50:53 | -39.2 | Dark | Down | 29.4 | 251.8 | Low | 10:35:53 - 11:05:53 | -6647 |
| PNWRO | 10:50:52 | -39.2 | Dark | Down | 29.3 | 252.1 | Low | 10:35:52 - 11:05:52 | -6673 |
| Goldendale | 10:50:55 | -40.5 | Dark | Down | 30.6 | 250.6 | Up | 10:35:55 - 11:05:55 | -6683 |
| The Dalles | 10:50:55 | -40.8 | Dark | Down | 30.9 | 250.4 | Up | 10:35:55 - 11:05:55 | -6704 |
| Maupin | 10:50:55 | -40.9 | Dark | Down | 31.0 | 250.7 | Up | 10:35:55 - 11:05:55 | -6747 |
| Sisters | 10:50:55 | -41.6 | Dark | Down | 31.6 | 250.8 | Up | 10:35:55 - 11:05:55 | -6834 |
| Redmond | 10:50:53 | -41.3 | Dark | Down | 31.3 | 251.2 | Up | 10:35:53 - 11:05:53 | -6838 |
| Bend | 10:50:53 | -41.5 | Dark | Down | 31.5 | 251.2 | Up | 10:35:53 - 11:05:53 | -6859 |
| Oregon Observatory | 10:50:54 | -41.6 | Dark | Down | 31.7 | 251.2 | Up | 10:35:54 - 11:05:54 | -6877 |
| La Pine/Gilchrist | 10:50:53 | -41.8 | Dark | Down | 31.8 | 251.2 | Up | 10:35:53 - 11:05:53 | -6897 |
| North Lake | 10:50:52 | -41.5 | Dark | Down | 31.5 | 252.0 | Up | 10:35:52 - 11:05:52 | -6945 |
| Paisley | 10:50:52 | -41.5 | Dark | Down | 31.4 | 252.6 | Up | 10:35:52 - 11:05:52 | -7004 |
| Chiloquin | 10:50:53 | -42.4 | Dark | Down | 32.4 | 251.6 | Up | 10:35:53 - 11:05:53 | -7010 |
| Klamath Falls | 10:50:53 | -42.5 | Dark | Down | 32.4 | 251.9 | Up | 10:35:53 - 11:05:53 | -7046 |
| Lakeview | 10:50:50 | -41.5 | Dark | Down | 31.4 | 253.1 | Up | 10:35:50 - 11:05:50 | -7058 |
| Cedarville | 10:50:49 | -41.6 | Dark | Down | 31.5 | 253.6 | Up | 10:35:49 - 11:05:49 | -7127 |
| Fall River/Burney | 10:50:51 | -42.7 | Dark | Down | 32.5 | 252.9 | Up | 10:35:51 - 11:05:51 | -7171 |
| Susanville | 10:50:48 | -42.4 | Dark | Down | 32.2 | 253.9 | Up | 10:35:48 - 11:05:48 | -7241 |
| Greenville | 10:50:49 | -42.7 | Dark | Down | 32.4 | 253.8 | Up | 10:35:49 - 11:05:49 | -7269 |
| Gimple | 10:50:49 | -42.6 | Dark | Down | 32.4 | 253.9 | Up | 10:35:49 - 11:05:49 | -7269 |
| Dunrhomin | 10:50:24 | -31.0 | Dark | Down | 20.7 | 265.0 | Low | 10:35:24 - 11:05:24 | -7278 |
| Quincy | 10:50:49 | -42.7 | Dark | Down | 32.5 | 253.9 | Up | 10:35:49 - 11:05:49 | -7290 |
| Portola | 10:50:47 | -42.4 | Dark | Down | 32.2 | 254.4 | Up | 10:35:47 - 11:05:47 | -7306 |
| Reno | 10:50:46 | -42.0 | Dark | Down | 31.8 | 255.0 | Up | 10:35:46 - 11:05:46 | -7337 |
| Carson City | 10:50:46 | -42.1 | Dark | Down | 31.9 | 255.3 | Up | 10:35:46 - 11:05:46 | -7375 |
| Yerington | 10:50:45 | -41.7 | Dark | Down | 31.4 | 255.8 | Up | 10:35:45 - 11:05:45 | -7399 |
| Gardnerville | 10:50:45 | -42.2 | Dark | Down | 31.9 | 255.4 | Up | 10:35:45 - 11:05:45 | -7402 |
| Hawthorne | 10:50:43 | -41.4 | Dark | Down | 31.1 | 256.5 | Up | 10:35:43 - 11:05:43 | -7451 |
| Tonopah | 10:50:39 | -40.5 | Dark | Down | 30.2 | 257.8 | Up | 10:35:39 - 11:05:39 | -7507 |
| Lee Vining | 10:50:43 | -42.0 | Dark | Down | 31.7 | 256.5 | Up | 10:35:43 - 11:05:43 | -7509 |
| Bishop | 10:50:42 | -41.6 | Dark | Down | 31.2 | 257.4 | Up | 10:35:42 - 11:05:42 | -7576 |
| Beatty | 10:50:38 | -40.4 | Dark | Down | 30.1 | 258.8 | Up | 10:35:38 - 11:05:38 | -7632 |
| Indian Springs | 10:50:36 | -39.7 | Dark | Down | 29.3 | 259.7 | Low | 10:35:36 - 11:05:36 | -7671 |
| Henderson | 10:50:34 | -39.2 | Dark | Down | 28.8 | 260.4 | Low | 10:35:34 - 11:05:34 | -7730 |
| CPSLO | 10:50:45 | -43.9 | Dark | Down | 33.5 | 257.0 | Up | 10:35:45 - 11:05:45 | -7785 |
| Patrick | 10:50:32 | -38.5 | Dark | Down | 28.0 | 261.5 | Low | 10:35:32 - 11:05:32 | -7800 |
| Kingman/Dolan Springs | 10:50:31 | -38.7 | Dark | Down | 28.2 | 261.5 | Low | 10:35:31 - 11:05:31 | -7824 |
| Laughlin/Bullhead City | 10:50:33 | -39.1 | Dark | Down | 28.6 | 261.2 | Low | 10:35:33 - 11:05:33 | -7825 |
| Mohave Valley | 10:50:32 | -39.1 | Dark | Down | 28.7 | 261.3 | Low | 10:35:32 - 11:05:32 | -7855 |
| Lake Havasu City | 10:50:31 | -39.0 | Dark | Down | 28.5 | 261.7 | Low | 10:35:31 - 11:05:31 | -7899 |
| Wildwood | 10:50:39 | -42.5 | Dark | Down | 32.1 | 259.2 | Up | 10:35:39 - 11:05:39 | -7927 |
| Parker | 10:50:31 | -39.0 | Dark | Down | 28.6 | 261.9 | Low | 10:35:31 - 11:05:31 | -7937 |
| Idyllwild | 10:50:35 | -41.1 | Dark | Down | 30.6 | 260.6 | Up | 10:35:35 - 11:05:35 | -7974 |
| George/Scottsdale | 10:50:27 | -37.1 | Dark | Down | 26.6 | 263.6 | Low | 10:35:27 - 11:05:27 | -7987 |
| Blythe | 10:50:31 | -39.3 | Dark | Down | 28.9 | 262.0 | Low | 10:35:31 - 11:05:31 | -7993 |
| Calipatria | 10:50:33 | -40.2 | Dark | Down | 29.7 | 261.7 | Low | 10:35:33 - 11:05:33 | -8044 |
| Yuma | 10:50:31 | -39.5 | Dark | Down | 29.0 | 262.5 | Low | 10:35:31 - 11:05:31 | -8094 |
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 505476, (2025/11/01 10:54UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 40.96 87 6Bet Ari 01:54:38.5 +20:48:26 2.6 11.32 51 110Omi Psc 01:45:23.7 +09:09:29 4.3 1.18 45 PPM 145099 01:54:12.1 +09:57:01 8.4 1.13 47 PPM 145007 01:49:15.2 +09:41:03 9.8 0.21 46 505476 01:49:53.8 +09:32:54 16.3 46 Positions are for J2000
Event circumstances last updated at 2021/11/28 00:21:17 UT
Marc W. Buie, Southwest Research Institute