Event between (576257) 12JD68 and star GA0960:05430072 with event index number of 2528593
Geocentric closest approach at 2025/06/28 05:17:34 UTC
J2000 position of star is 17:47:45.7 +06:26:25
Equinox of date position of star is 17:48:49.7 +06:26:02
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 125 degrees from the moon.
Moon is 10% illuminated.
TNO apparent brightness V=22.7
[RECON map]
TNO is 28.0 AU from the Sun
and 27.1 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 182 seconds.
The 1-sigma cross-track error in the shadow position is
1138 km.
The sky-plane scale is
19675.7 km/arcsec.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.1 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 576257, (2025/06/28 05:18UT) Object RA Dec mag sep mel Vega 18:37:48.1 +38:48:30 0.0 34.20 112 60Bet Oph 17:44:44.0 +04:33:30 2.8 2.16 124 PPM 164771 17:54:28.8 +06:05:53 5.8 1.40 126 PPM 164562 17:47:51.2 +06:06:46 7.8 0.43 124 PPM 164595 17:49:07.3 +06:23:42 9.0 0.05 125 576257 17:49:00.3 +06:25:59 16.6 125 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 22.4 km
RECON observability=0.5 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) |
| Clarence Fulton | 05:18:43 | -8.2 | NT | Up | 39.5 | 139.9 | Up | 05:03:43 - 05:33:43 | 7344 |
| Kelowna | 05:18:43 | -8.5 | NT | Up | 39.8 | 139.5 | Up | 05:03:43 - 05:33:43 | 7316 |
| Peachland | 05:18:43 | -8.5 | NT | Up | 39.7 | 139.1 | Up | 05:03:43 - 05:33:43 | 7311 |
| Summerland | 05:18:43 | -8.6 | NT | Up | 39.9 | 139.1 | Up | 05:03:43 - 05:33:43 | 7299 |
| Penticton | 05:18:43 | -8.7 | NT | Up | 40.0 | 139.2 | Up | 05:03:43 - 05:33:43 | 7293 |
| Oliver | 05:18:43 | -9.0 | NT | Up | 40.2 | 139.0 | Up | 05:03:43 - 05:33:43 | 7266 |
| Anarchist Mountain Observatory | 05:18:43 | -9.2 | NT | Up | 40.5 | 139.1 | Up | 05:03:43 - 05:33:43 | 7251 |
| Victoria | 05:19:06 | -8.0 | NT | Up | 39.0 | 134.3 | Up | 05:04:06 - 05:34:06 | 7243 |
| Tonasket | 05:18:56 | -9.4 | NT | Up | 40.7 | 139.0 | Up | 05:03:56 - 05:33:56 | 7223 |
| Okanogan | 05:18:56 | -9.7 | NT | Up | 40.9 | 138.6 | Up | 05:03:56 - 05:33:56 | 7198 |
| Brewster | 05:18:57 | -9.8 | NT | Up | 41.0 | 138.2 | Up | 05:03:57 - 05:33:57 | 7178 |
| Manson/Chelan | 05:18:59 | -9.8 | NT | Up | 41.0 | 137.6 | Up | 05:03:59 - 05:33:59 | 7165 |
| Wenatchee | 05:19:00 | -10.1 | NT | Up | 41.2 | 137.2 | Up | 05:04:00 - 05:34:00 | 7129 |
| Ellensburg | 05:19:02 | -10.3 | NT | Up | 41.4 | 136.7 | Up | 05:04:02 - 05:34:02 | 7098 |
| Yakima | 05:19:03 | -10.7 | NT | Up | 41.7 | 136.4 | Up | 05:04:03 - 05:34:03 | 7065 |
| Toppenish/White Swan | 05:19:03 | -10.9 | NT | Up | 42.0 | 136.5 | Up | 05:04:03 - 05:34:03 | 7046 |
| Pasco | 05:18:59 | -11.5 | NT | Up | 42.7 | 137.9 | Up | 05:03:59 - 05:33:59 | 7025 |
| Goldendale | 05:19:05 | -11.2 | NT | Up | 42.2 | 135.6 | Up | 05:04:05 - 05:34:05 | 7005 |
| PNWRO | 05:18:59 | -11.8 | NT | Up | 42.9 | 138.0 | Up | 05:03:59 - 05:33:59 | 7003 |
| The Dalles | 05:19:06 | -11.2 | NT | Up | 42.2 | 135.1 | Up | 05:04:06 - 05:34:06 | 6990 |
| Maupin | 05:19:07 | -11.5 | NT | Up | 42.5 | 134.9 | Up | 05:04:07 - 05:34:07 | 6954 |
| Sisters | 05:19:11 | -12.0 | AT | Up | 42.9 | 133.8 | Up | 05:04:11 - 05:34:11 | 6886 |
| Redmond | 05:19:09 | -12.2 | AT | Up | 43.1 | 134.2 | Up | 05:04:09 - 05:34:09 | 6881 |
| Bend | 05:19:11 | -12.3 | AT | Up | 43.2 | 133.9 | Up | 05:04:11 - 05:34:11 | 6864 |
| Oregon Observatory | 05:19:11 | -12.4 | AT | Up | 43.2 | 133.7 | Up | 05:04:11 - 05:34:11 | 6851 |
| La Pine/Gilchrist | 05:19:11 | -12.5 | AT | Up | 43.3 | 133.5 | Up | 05:04:11 - 05:34:11 | 6834 |
| North Lake | 05:19:11 | -13.1 | AT | Up | 44.0 | 133.9 | Up | 05:04:11 - 05:34:11 | 6792 |
| Chiloquin | 05:19:15 | -13.2 | AT | Up | 43.9 | 132.3 | Up | 05:04:15 - 05:34:15 | 6743 |
| Paisley | 05:19:11 | -13.7 | AT | Up | 44.5 | 133.9 | Up | 05:04:11 - 05:34:11 | 6741 |
| Klamath Falls | 05:19:15 | -13.5 | AT | Up | 44.2 | 132.1 | Up | 05:04:15 - 05:34:15 | 6713 |
| Lakeview | 05:19:11 | -14.2 | AT | Up | 45.0 | 133.8 | Up | 05:04:11 - 05:34:11 | 6696 |
| Cedarville | 05:19:12 | -14.8 | AT | Up | 45.5 | 133.5 | Up | 05:04:12 - 05:34:12 | 6638 |
| Fall River/Burney | 05:19:16 | -14.6 | AT | Up | 45.2 | 131.7 | Up | 05:04:16 - 05:34:16 | 6607 |
| Susanville | 05:19:15 | -15.5 | AT | Up | 46.0 | 132.1 | Up | 05:04:15 - 05:34:15 | 6545 |
| Greenville | 05:19:17 | -15.5 | AT | Up | 46.1 | 131.6 | Up | 05:04:17 - 05:34:17 | 6523 |
| Gimple | 05:19:16 | -15.6 | AT | Up | 46.1 | 131.7 | Up | 05:04:16 - 05:34:16 | 6522 |
| Quincy | 05:19:17 | -15.7 | AT | Up | 46.2 | 131.4 | Up | 05:04:17 - 05:34:17 | 6505 |
| Portola | 05:19:15 | -16.0 | AT | Up | 46.5 | 131.9 | Up | 05:04:15 - 05:34:15 | 6489 |
| Reno | 05:19:14 | -16.5 | AT | Up | 47.1 | 132.4 | Up | 05:04:14 - 05:34:14 | 6459 |
| Carson City | 05:19:15 | -16.8 | AT | Up | 47.3 | 132.2 | Up | 05:04:15 - 05:34:15 | 6427 |
| Gardnerville | 05:19:15 | -17.0 | AT | Up | 47.5 | 132.0 | Up | 05:04:15 - 05:34:15 | 6404 |
| Yerington | 05:19:13 | -17.3 | AT | Up | 47.8 | 132.8 | Up | 05:04:13 - 05:34:13 | 6403 |
| Dunrhomin | 05:18:23 | -21.9 | Dark | Down | 53.3 | 152.8 | Up | 05:03:23 - 05:33:23 | 6391 |
| Hawthorne | 05:19:12 | -17.9 | AT | Up | 48.5 | 133.0 | Up | 05:04:12 - 05:34:12 | 6356 |
| Lee Vining | 05:19:15 | -18.1 | Dark | Up | 48.6 | 132.0 | Up | 05:04:15 - 05:34:15 | 6310 |
| Tonopah | 05:19:08 | -18.9 | Dark | Up | 49.6 | 134.4 | Up | 05:04:08 - 05:34:08 | 6300 |
| Bishop | 05:19:13 | -18.9 | Dark | Up | 49.4 | 132.3 | Up | 05:04:13 - 05:34:13 | 6247 |
| Beatty | 05:19:09 | -20.1 | Dark | Up | 50.6 | 134.0 | Up | 05:04:09 - 05:34:09 | 6188 |
| Indian Springs | 05:19:05 | -20.9 | Dark | Up | 51.5 | 135.1 | Up | 05:04:05 - 05:34:05 | 6147 |
| Henderson | 05:19:04 | -21.6 | Dark | Up | 52.2 | 135.5 | Up | 05:04:04 - 05:34:04 | 6091 |
| CPSLO | 05:19:25 | -19.4 | Dark | Up | 49.3 | 127.8 | Up | 05:04:25 - 05:34:25 | 6079 |
| Patrick | 05:19:01 | -22.6 | Dark | Down | 53.3 | 136.4 | Up | 05:04:01 - 05:34:01 | 6021 |
| Laughlin/Bullhead City | 05:19:04 | -22.5 | Dark | Down | 53.1 | 135.2 | Up | 05:04:04 - 05:34:04 | 6004 |
| Kingman/Dolan Springs | 05:19:02 | -22.7 | Dark | Down | 53.4 | 135.9 | Up | 05:04:02 - 05:34:02 | 6002 |
| Mohave Valley | 05:19:04 | -22.7 | Dark | Down | 53.3 | 135.0 | Up | 05:04:04 - 05:34:04 | 5978 |
| Wildwood | 05:19:20 | -21.4 | Dark | Up | 51.4 | 129.1 | Up | 05:04:20 - 05:34:20 | 5943 |
| Lake Havasu City | 05:19:04 | -23.2 | Dark | Down | 53.7 | 134.9 | Up | 05:04:04 - 05:34:04 | 5938 |
| Parker | 05:19:04 | -23.5 | Dark | Down | 54.0 | 134.6 | Up | 05:04:04 - 05:34:04 | 5904 |
| Idyllwild | 05:19:14 | -22.6 | Dark | Up | 52.8 | 131.1 | Up | 05:04:14 - 05:34:14 | 5890 |
| Blythe | 05:19:06 | -23.8 | Dark | Down | 54.2 | 133.7 | Up | 05:04:06 - 05:34:06 | 5857 |
| George/Scottsdale | 05:18:56 | -25.0 | Dark | Down | 55.7 | 137.6 | Up | 05:03:56 - 05:33:56 | 5840 |
| Calipatria | 05:19:10 | -23.7 | Dark | Down | 54.0 | 132.0 | Up | 05:04:10 - 05:34:10 | 5819 |
| Yuma | 05:19:08 | -24.5 | Dark | Down | 54.8 | 132.7 | Up | 05:04:08 - 05:34:08 | 5768 |
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 576257, (2025/06/28 05:18UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 34.20 112 60Bet Oph 17:43:28.3 +04:34:06 2.8 2.16 124 PPM 164771 17:53:14.0 +06:06:07 5.8 1.40 126 PPM 164562 17:46:36.5 +06:07:14 7.8 0.43 124 PPM 164595 17:47:52.8 +06:24:08 9.0 0.05 125 576257 17:47:45.7 +06:26:25 16.6 125 Positions are for J2000
Event circumstances last updated at 2021/11/11 00:11:24 UT
Marc W. Buie, Southwest Research Institute