Event between (576257) 12JD68 and star GA0960:05508454 with event index number of 2528579
Geocentric closest approach at 2025/05/31 10:06:21 UTC
J2000 position of star is 17:50:50.6 +06:22:26
Equinox of date position of star is 17:51:54.6 +06:22:09
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 129 degrees from the moon.
Moon is 23% illuminated.
TNO apparent brightness V=22.7
[RECON map]
TNO is 28.0 AU from the Sun
and 27.2 AU from the Earth.
The TNO is moving 22.1
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 190 seconds.
The 1-sigma cross-track error in the shadow position is
1278 km.
The sky-plane scale is
19694.3 km/arcsec.
The TNO has an absolute magnitude Hv=8.2
Diameter=138.0 km assuming a 5% albedo -- 6.2 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, (2025/05/31 10:06UT) Object RA Dec mag sep mel Vega 18:37:47.9 +38:48:30 0.0 34.04 112 60Bet Oph 17:44:43.7 +04:33:30 2.8 2.57 128 PPM 164771 17:54:28.5 +06:05:53 5.8 0.65 130 PPM 164724 17:53:15.0 +06:43:31 8.0 0.46 129 PPM 164660 17:51:08.5 +06:12:02 9.9 0.29 129 PPM 164691 17:52:02.2 +06:27:00 10.7 0.08 129 576257 17:52:05.0 +06:22:07 15.1 129 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
4.7 sigma about the mid-time.
The median site spacing is 19.5 km
RECON observability=0.8 and success probability=0.2%
| 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 | 10:06:26 | -12.1 | AT | Down | 44.6 | 199.4 | Up | 09:51:26 - 10:21:26 | 6588 |
| Kelowna | 10:06:25 | -12.5 | AT | Down | 45.0 | 199.3 | Up | 09:51:25 - 10:21:25 | 6557 |
| Peachland | 10:06:26 | -12.7 | AT | Down | 45.2 | 198.9 | Up | 09:51:26 - 10:21:26 | 6543 |
| Summerland | 10:06:25 | -12.8 | AT | Down | 45.3 | 199.1 | Up | 09:51:25 - 10:21:25 | 6534 |
| Penticton | 10:06:25 | -12.8 | AT | Down | 45.4 | 199.3 | Up | 09:51:25 - 10:21:25 | 6531 |
| Oliver | 10:06:24 | -13.1 | AT | Down | 45.7 | 199.4 | Up | 09:51:24 - 10:21:24 | 6505 |
| Anarchist Mountain Observatory | 10:06:24 | -13.2 | AT | Down | 45.8 | 199.7 | Up | 09:51:24 - 10:21:24 | 6496 |
| Tonasket | 10:06:23 | -13.5 | AT | Down | 46.1 | 199.7 | Up | 09:51:23 - 10:21:23 | 6471 |
| Okanogan | 10:06:23 | -13.9 | AT | Down | 46.5 | 199.6 | Up | 09:51:23 - 10:21:23 | 6443 |
| Brewster | 10:06:23 | -14.2 | AT | Down | 46.8 | 199.4 | Up | 09:51:23 - 10:21:23 | 6419 |
| Manson/Chelan | 10:06:24 | -14.5 | AT | Down | 47.1 | 199.0 | Up | 09:51:24 - 10:21:24 | 6396 |
| Victoria | 10:06:35 | -14.9 | AT | Down | 47.1 | 194.2 | Up | 09:51:35 - 10:21:35 | 6384 |
| Wenatchee | 10:06:24 | -14.9 | AT | Down | 47.5 | 198.9 | Up | 09:51:24 - 10:21:24 | 6356 |
| Ellensburg | 10:06:24 | -15.4 | AT | Down | 48.0 | 198.8 | Up | 09:51:24 - 10:21:24 | 6320 |
| Pasco | 10:06:18 | -15.5 | AT | Down | 48.4 | 201.1 | Up | 09:51:18 - 10:21:18 | 6289 |
| Yakima | 10:06:23 | -15.7 | AT | Down | 48.4 | 198.9 | Up | 09:51:23 - 10:21:23 | 6288 |
| PNWRO | 10:06:17 | -15.6 | AT | Down | 48.5 | 201.5 | Up | 09:51:17 - 10:21:17 | 6275 |
| Toppenish/White Swan | 10:06:23 | -15.8 | AT | Down | 48.5 | 199.2 | Up | 09:51:23 - 10:21:23 | 6274 |
| Goldendale | 10:06:23 | -16.5 | AT | Down | 49.2 | 198.8 | Up | 09:51:23 - 10:21:23 | 6222 |
| The Dalles | 10:06:24 | -16.8 | AT | Down | 49.5 | 198.3 | Up | 09:51:24 - 10:21:24 | 6197 |
| Maupin | 10:06:22 | -17.1 | AT | Down | 49.8 | 198.6 | Up | 09:51:22 - 10:21:22 | 6166 |
| Dunrhomin | 10:05:20 | -14.1 | AT | Down | 48.1 | 223.6 | Up | 09:50:20 - 10:20:20 | 6103 |
| Redmond | 10:06:21 | -17.9 | AT | Down | 50.7 | 198.8 | Up | 09:51:21 - 10:21:21 | 6091 |
| Sisters | 10:06:23 | -18.1 | Dark | Down | 50.8 | 198.2 | Up | 09:51:23 - 10:21:23 | 6085 |
| Bend | 10:06:22 | -18.2 | Dark | Down | 50.9 | 198.7 | Up | 09:51:22 - 10:21:22 | 6071 |
| Oregon Observatory | 10:06:22 | -18.4 | Dark | Down | 51.1 | 198.6 | Up | 09:51:22 - 10:21:22 | 6054 |
| La Pine/Gilchrist | 10:06:22 | -18.6 | Dark | Down | 51.3 | 198.5 | Up | 09:51:22 - 10:21:22 | 6036 |
| North Lake | 10:06:19 | -18.7 | Dark | Down | 51.6 | 199.6 | Up | 09:51:19 - 10:21:19 | 6013 |
| Paisley | 10:06:17 | -19.1 | Dark | Down | 52.0 | 200.4 | Up | 09:51:17 - 10:21:17 | 5974 |
| Chiloquin | 10:06:21 | -19.7 | Dark | Down | 52.5 | 198.4 | Up | 09:51:21 - 10:21:21 | 5937 |
| Lakeview | 10:06:15 | -19.4 | Dark | Down | 52.5 | 201.0 | Up | 09:51:15 - 10:21:15 | 5936 |
| Klamath Falls | 10:06:20 | -19.9 | Dark | Down | 52.8 | 198.7 | Up | 09:51:20 - 10:21:20 | 5909 |
| Cedarville | 10:06:14 | -19.9 | Dark | Down | 53.0 | 201.5 | Up | 09:51:14 - 10:21:14 | 5885 |
| Fall River/Burney | 10:06:17 | -20.8 | Dark | Down | 53.8 | 199.8 | Up | 09:51:17 - 10:21:17 | 5818 |
| Susanville | 10:06:13 | -21.1 | Dark | Down | 54.2 | 201.3 | Up | 09:51:13 - 10:21:13 | 5779 |
| Gimple | 10:06:14 | -21.4 | Dark | Down | 54.5 | 201.1 | Up | 09:51:14 - 10:21:14 | 5751 |
| Greenville | 10:06:15 | -21.4 | Dark | Down | 54.5 | 201.0 | Up | 09:51:15 - 10:21:15 | 5749 |
| Quincy | 10:06:13 | -21.6 | Dark | Down | 54.7 | 201.1 | Up | 09:51:13 - 10:21:13 | 5732 |
| Portola | 10:06:12 | -21.5 | Dark | Down | 54.7 | 201.9 | Up | 09:51:12 - 10:21:12 | 5732 |
| Reno | 10:06:09 | -21.5 | Dark | Down | 54.8 | 203.1 | Up | 09:51:09 - 10:21:09 | 5723 |
| Carson City | 10:06:08 | -21.8 | Dark | Down | 55.1 | 203.3 | Up | 09:51:08 - 10:21:08 | 5692 |
| Yerington | 10:06:06 | -21.7 | Dark | Down | 55.1 | 204.5 | Up | 09:51:06 - 10:21:06 | 5689 |
| Gardnerville | 10:06:08 | -22.0 | Dark | Down | 55.3 | 203.6 | Up | 09:51:08 - 10:21:08 | 5672 |
| Hawthorne | 10:06:03 | -21.8 | Dark | Down | 55.3 | 205.6 | Up | 09:51:03 - 10:21:03 | 5660 |
| Tonopah | 10:05:57 | -21.6 | Dark | Down | 55.3 | 208.2 | Up | 09:50:57 - 10:20:57 | 5651 |
| Lee Vining | 10:06:04 | -22.5 | Dark | Down | 56.0 | 205.2 | Up | 09:51:04 - 10:21:04 | 5600 |
| Bishop | 10:06:00 | -22.7 | Dark | Down | 56.3 | 206.7 | Up | 09:51:00 - 10:21:00 | 5563 |
| Beatty | 10:05:53 | -22.4 | Dark | Down | 56.1 | 209.7 | Up | 09:50:53 - 10:20:53 | 5559 |
| Indian Springs | 10:05:48 | -22.1 | Dark | Down | 55.9 | 211.7 | Up | 09:50:48 - 10:20:48 | 5555 |
| Henderson | 10:05:46 | -22.2 | Dark | Down | 56.1 | 213.2 | Up | 09:50:46 - 10:20:46 | 5523 |
| Patrick | 10:05:40 | -22.2 | Dark | Down | 56.1 | 215.5 | Up | 09:50:40 - 10:20:40 | 5493 |
| Kingman/Dolan Springs | 10:05:40 | -22.5 | Dark | Down | 56.4 | 215.4 | Up | 09:50:40 - 10:20:40 | 5469 |
| Laughlin/Bullhead City | 10:05:42 | -22.7 | Dark | Down | 56.6 | 214.6 | Up | 09:50:42 - 10:20:42 | 5455 |
| Mohave Valley | 10:05:42 | -22.9 | Dark | Down | 56.9 | 214.8 | Up | 09:50:42 - 10:20:42 | 5430 |
| Lake Havasu City | 10:05:41 | -23.1 | Dark | Down | 57.1 | 215.6 | Up | 09:50:41 - 10:20:41 | 5400 |
| George/Scottsdale | 10:05:29 | -22.5 | Dark | Down | 56.5 | 220.1 | Up | 09:50:29 - 10:20:29 | 5388 |
| Parker | 10:05:39 | -23.4 | Dark | Down | 57.4 | 215.9 | Up | 09:50:39 - 10:20:39 | 5369 |
| CPSLO | 10:06:06 | -25.4 | Dark | Down | 58.9 | 204.2 | Up | 09:51:06 - 10:21:06 | 5326 |
| Blythe | 10:05:40 | -24.0 | Dark | Down | 57.9 | 215.9 | Up | 09:50:40 - 10:20:40 | 5314 |
| Idyllwild | 10:05:48 | -24.9 | Dark | Down | 58.8 | 212.3 | Up | 09:50:48 - 10:20:48 | 5275 |
| Wildwood | 10:05:55 | -25.5 | Dark | Down | 59.3 | 208.8 | Up | 09:50:55 - 10:20:55 | 5264 |
| Calipatria | 10:05:42 | -24.8 | Dark | Down | 58.8 | 214.9 | Up | 09:50:42 - 10:20:42 | 5247 |
| Yuma | 10:05:37 | -24.7 | Dark | Down | 58.7 | 216.7 | Up | 09:50:37 - 10:20:37 | 5229 |
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, (2025/05/31 10:06UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 34.04 112 60Bet Oph 17:43:28.3 +04:34:06 2.8 2.57 128 PPM 164771 17:53:14.0 +06:06:07 5.8 0.65 130 PPM 164724 17:52:00.9 +06:43:47 8.0 0.46 129 PPM 164660 17:49:54.1 +06:12:23 9.9 0.29 129 PPM 164691 17:50:47.9 +06:27:19 10.7 0.08 129 576257 17:50:50.6 +06:22:26 15.1 129 Positions are for J2000
Event circumstances last updated at 2021/11/10 00:05:04 UT
Marc W. Buie, Southwest Research Institute