Event between (143707) 03UY117 and star GA1120:00550260 with event index number of 2468542
Geocentric closest approach at 2025/11/28 08:50:07 UTC
J2000 position of star is 04:04:25.3 +23:41:10
Equinox of date position of star is 04:05:51.7 +23:45:02
Stellar brightness G=12.5,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 86 degrees from the moon.
Moon is 51% illuminated.
Apparent brightness V=21.4
[RECON map]
Object is 35.7 AU from the Sun
and 34.7 AU from the Earth.
Apparent velocity is 24.5
km/sec on the sky relative to the star, or,
3.5 arcsec/hr.
The 1-sigma error in the time of the event is 63 seconds.
The 1-sigma cross-track error in the shadow position is
1299 km.
The sky-plane scale is
25157.7 km/arcsec.
The object has an absolute magnitude Hv=5.9
Diameter=378.5 km assuming a 5% albedo -- 15.9 sec chord
Diameter=154.5 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is 5:2EEE
Star training set for 143707, (2025/11/28 08:50UT) Object RA Dec mag sep mel Aldebaran 04:37:24.6 +16:33:34 0.8 10.30 92 44Zet Per 03:55:46.0 +31:57:30 2.8 8.51 86 36 Tau 04:05:55.0 +24:10:31 6.1 0.42 87 PPM 093207 04:05:44.0 +23:28:34 8.5 0.28 86 PPM 093197 04:05:17.8 +23:41:26 9.7 0.17 86 PPM 093206 04:05:40.5 +23:48:09 11.2 0.08 86 143707 04:05:58.3 +23:45:20 12.5 87 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 25.5 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 | 08:48:14 | -51.9 | Dark | Down | 52.3 | 233.7 | Up | 08:42:27 - 08:54:01 | 7504 |
| Kamloops | 08:48:52 | -58.5 | Dark | Down | 59.5 | 214.5 | Up | 08:43:05 - 08:54:39 | 7395 |
| Kelowna | 08:48:49 | -58.9 | Dark | Down | 59.9 | 216.7 | Up | 08:43:02 - 08:54:36 | 7307 |
| Peachland | 08:48:49 | -59.1 | Dark | Down | 60.1 | 216.4 | Up | 08:43:02 - 08:54:36 | 7298 |
| Summerland | 08:48:49 | -59.2 | Dark | Down | 60.1 | 216.7 | Up | 08:43:02 - 08:54:36 | 7282 |
| Penticton | 08:48:49 | -59.2 | Dark | Down | 60.2 | 216.9 | Up | 08:43:02 - 08:54:36 | 7274 |
| Oliver | 08:48:49 | -59.5 | Dark | Down | 60.4 | 217.3 | Up | 08:43:02 - 08:54:36 | 7238 |
| Anarchist Mountain Observatory | 08:48:48 | -59.6 | Dark | Down | 60.5 | 217.8 | Up | 08:43:01 - 08:54:35 | 7220 |
| Victoria | 08:49:01 | -61.2 | Dark | Down | 62.4 | 211.3 | Up | 08:43:14 - 08:54:48 | 7198 |
| Okanogan | 08:48:49 | -60.3 | Dark | Down | 61.1 | 218.1 | Up | 08:43:02 - 08:54:36 | 7155 |
| Brewster | 08:48:50 | -60.6 | Dark | Down | 61.4 | 218.1 | Up | 08:43:03 - 08:54:37 | 7128 |
| Manson/Chelan | 08:48:51 | -60.9 | Dark | Down | 61.7 | 217.7 | Up | 08:43:04 - 08:54:38 | 7109 |
| Wenatchee | 08:48:51 | -61.3 | Dark | Down | 62.2 | 218.0 | Up | 08:43:04 - 08:54:38 | 7061 |
| Ellensburg | 08:48:51 | -61.8 | Dark | Down | 62.6 | 218.1 | Up | 08:43:04 - 08:54:38 | 7020 |
| Yakima | 08:48:52 | -62.1 | Dark | Down | 62.9 | 218.5 | Up | 08:43:05 - 08:54:39 | 6978 |
| Toppenish/White Swan | 08:48:51 | -62.2 | Dark | Down | 63.0 | 219.1 | Up | 08:43:04 - 08:54:38 | 6954 |
| PNWRO | 08:48:47 | -62.0 | Dark | Down | 62.6 | 222.2 | Up | 08:43:00 - 08:54:34 | 6906 |
| The Dalles | 08:48:54 | -63.2 | Dark | Down | 63.9 | 218.7 | Up | 08:43:07 - 08:54:41 | 6879 |
| Maupin | 08:48:53 | -63.5 | Dark | Down | 64.2 | 219.4 | Up | 08:43:06 - 08:54:40 | 6834 |
| Sisters | 08:48:54 | -64.4 | Dark | Down | 65.1 | 219.7 | Up | 08:43:07 - 08:54:41 | 6746 |
| Bend | 08:48:54 | -64.6 | Dark | Down | 65.2 | 220.5 | Up | 08:43:07 - 08:54:41 | 6719 |
| Oregon Observatory | 08:48:55 | -64.8 | Dark | Down | 65.4 | 220.5 | Up | 08:43:08 - 08:54:42 | 6702 |
| Chiloquin | 08:48:56 | -66.0 | Dark | Down | 66.6 | 221.6 | Up | 08:43:09 - 08:54:43 | 6566 |
| Klamath Falls | 08:48:56 | -66.3 | Dark | Down | 66.8 | 222.3 | Up | 08:43:09 - 08:54:43 | 6529 |
| Cedarville | 08:48:51 | -66.2 | Dark | Down | 66.4 | 226.5 | Up | 08:43:04 - 08:54:38 | 6442 |
| Fall River/Burney | 08:48:55 | -67.1 | Dark | Down | 67.4 | 225.0 | Up | 08:43:08 - 08:54:42 | 6400 |
| Greenville | 08:48:53 | -67.6 | Dark | Down | 67.8 | 227.4 | Up | 08:43:06 - 08:54:40 | 6299 |
| Gimple | 08:48:53 | -67.6 | Dark | Down | 67.8 | 227.6 | Up | 08:43:06 - 08:54:40 | 6298 |
| Quincy | 08:48:53 | -67.8 | Dark | Down | 68.0 | 227.8 | Up | 08:43:06 - 08:54:40 | 6277 |
| Dunrhomin | 08:48:03 | -58.4 | Dark | Down | 57.6 | 249.5 | Up | 08:42:16 - 08:53:50 | 6267 |
| Portola | 08:48:52 | -67.7 | Dark | Down | 67.8 | 228.9 | Up | 08:43:05 - 08:54:39 | 6260 |
| Nikitin | 08:48:02 | -58.5 | Dark | Down | 57.6 | 249.7 | Up | 08:42:15 - 08:53:49 | 6247 |
| CU-SBO | 08:48:03 | -58.6 | Dark | Down | 57.7 | 249.7 | Up | 08:42:16 - 08:53:50 | 6240 |
| Reno | 08:48:49 | -67.6 | Dark | Down | 67.6 | 230.6 | Up | 08:43:02 - 08:54:36 | 6227 |
| Carson City | 08:48:49 | -67.8 | Dark | Down | 67.8 | 231.3 | Up | 08:43:02 - 08:54:36 | 6188 |
| Yerington | 08:48:48 | -67.7 | Dark | Down | 67.5 | 232.8 | Up | 08:43:01 - 08:54:35 | 6162 |
| Gardnerville | 08:48:49 | -68.0 | Dark | Down | 67.9 | 231.9 | Up | 08:43:02 - 08:54:36 | 6161 |
| Hawthorne | 08:48:46 | -67.7 | Dark | Down | 67.5 | 234.6 | Up | 08:42:59 - 08:54:33 | 6108 |
| Lee Vining | 08:48:47 | -68.4 | Dark | Down | 68.1 | 234.9 | Up | 08:43:00 - 08:54:34 | 6051 |
| Bishop | 08:48:45 | -68.4 | Dark | Down | 68.0 | 237.4 | Up | 08:42:58 - 08:54:32 | 5981 |
| Beatty | 08:48:40 | -67.7 | Dark | Down | 67.1 | 240.9 | Up | 08:42:53 - 08:54:27 | 5921 |
| Patrick | 08:48:29 | -66.7 | Dark | Down | 65.6 | 247.9 | Up | 08:42:42 - 08:54:16 | 5745 |
| Laughlin/Bullhead City | 08:48:32 | -67.3 | Dark | Down | 66.3 | 247.6 | Up | 08:42:45 - 08:54:19 | 5721 |
| Lake Havasu City | 08:48:31 | -67.5 | Dark | Down | 66.3 | 249.3 | Up | 08:42:44 - 08:54:18 | 5646 |
| Wildwood | 08:48:46 | -70.6 | Dark | Down | 69.7 | 244.4 | Up | 08:42:59 - 08:54:33 | 5625 |
| Idyllwild | 08:48:39 | -69.6 | Dark | Down | 68.4 | 248.0 | Up | 08:42:52 - 08:54:26 | 5574 |
| George/Scottsdale | 08:48:22 | -66.1 | Dark | Down | 64.7 | 253.7 | Up | 08:42:35 - 08:54:09 | 5553 |
| Calipatria | 08:48:35 | -69.0 | Dark | Down | 67.7 | 250.9 | Up | 08:42:48 - 08:54:22 | 5500 |
| Yuma | 08:48:32 | -68.6 | Dark | Down | 67.2 | 252.9 | Up | 08:42:45 - 08:54:19 | 5449 |
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 143707, (2025/11/28 08:50UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 10.30 92 44Zet Per 03:54:07.9 +31:53:01 2.8 8.51 86 36 Tau 04:04:21.7 +24:06:21 6.1 0.42 87 PPM 093207 04:04:11.1 +23:24:24 8.5 0.28 86 PPM 093197 04:03:44.8 +23:37:15 9.7 0.17 86 PPM 093206 04:04:07.5 +23:43:59 11.2 0.08 86 143707 04:04:25.3 +23:41:10 12.5 86 Positions are for J2000
Event circumstances last updated at 2024/01/29 04:26:54 UT
Marc W. Buie, Southwest Research Institute