Event between (612175) 00QE226 and star GA0920:00050090 with event index number of 2808719
Geocentric closest approach at 2025/08/31 07:56:22 UTC
J2000 position of star is 00:30:22.7 +02:02:48
Equinox of date position of star is 00:31:31.5 +02:10:12
Stellar brightness G=14.0,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 119 degrees from the moon.
Moon is 51% illuminated.
TNO apparent brightness V=22.9
[RECON map]
TNO is 44.7 AU from the Sun
and 43.9 AU from the Earth.
The TNO is moving 21.4
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 259 seconds.
The 1-sigma cross-track error in the shadow position is
3507 km.
The sky-plane scale is
31805.9 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=310.5 km assuming a 5% albedo -- 14.5 sec chord
Diameter=126.7 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 612175, (2025/08/31 07:56UT) Object RA Dec mag sep mel Fomalhaut 22:59:03.7 -29:29:08 1.2 38.65 83 Algenib 00:14:33.6 +15:19:34 2.8 13.80 121 44 Psc 00:26:43.2 +02:04:53 5.8 1.25 118 PPM 143521 00:28:39.4 +02:57:21 8.0 1.08 118 PPM 143589 00:33:10.0 +02:36:05 9.7 0.55 119 PPM 143564 00:31:34.6 +02:00:51 10.4 0.18 119 612175 00:31:41.8 +02:11:18 14.0 119 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
3.5 sigma about the mid-time.
The median site spacing is 19.2 km
RECON observability=1.0 and success probability=8.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 07:56:17 | -30.8 | Dark | Down | 35.5 | 143.3 | Up | 07:41:17 - 08:11:17 | 4508 |
| Victoria | 07:56:32 | -32.8 | Dark | Down | 36.0 | 139.0 | Up | 07:41:32 - 08:11:32 | 4479 |
| Peachland | 07:56:18 | -31.7 | Dark | Down | 36.5 | 143.6 | Up | 07:41:18 - 08:11:18 | 4446 |
| Kelowna | 07:56:18 | -31.6 | Dark | Down | 36.5 | 144.0 | Up | 07:41:18 - 08:11:18 | 4443 |
| Summerland | 07:56:19 | -31.9 | Dark | Down | 36.6 | 143.6 | Up | 07:41:19 - 08:11:19 | 4435 |
| Penticton | 07:56:19 | -32.0 | Dark | Down | 36.7 | 143.7 | Up | 07:41:19 - 08:11:19 | 4429 |
| Oliver | 07:56:20 | -32.3 | Dark | Down | 37.0 | 143.6 | Up | 07:41:20 - 08:11:20 | 4410 |
| Anarchist Mountain Observatory | 07:56:20 | -32.5 | Dark | Down | 37.2 | 143.7 | Up | 07:41:20 - 08:11:20 | 4396 |
| Tonasket | 07:56:21 | -32.8 | Dark | Down | 37.5 | 143.5 | Up | 07:41:21 - 08:11:21 | 4381 |
| Okanogan | 07:56:22 | -33.1 | Dark | Down | 37.7 | 143.2 | Up | 07:41:22 - 08:11:22 | 4367 |
| Brewster | 07:56:24 | -33.4 | Dark | Down | 37.8 | 142.8 | Up | 07:41:24 - 08:11:24 | 4358 |
| Manson/Chelan | 07:56:25 | -33.6 | Dark | Down | 37.8 | 142.3 | Up | 07:41:25 - 08:11:25 | 4357 |
| Wenatchee | 07:56:28 | -34.1 | Dark | Down | 38.1 | 141.9 | Up | 07:41:28 - 08:11:28 | 4336 |
| Ellensburg | 07:56:29 | -34.5 | Dark | Down | 38.4 | 141.5 | Up | 07:41:29 - 08:11:29 | 4319 |
| Yakima | 07:56:30 | -34.9 | Dark | Down | 38.7 | 141.2 | Up | 07:41:30 - 08:11:30 | 4297 |
| Toppenish/White Swan | 07:56:31 | -35.1 | Dark | Down | 38.9 | 141.3 | Up | 07:41:31 - 08:11:31 | 4279 |
| Goldendale | 07:56:34 | -35.7 | Dark | Down | 39.2 | 140.6 | Up | 07:41:34 - 08:11:34 | 4260 |
| The Dalles | 07:56:36 | -35.9 | Dark | Down | 39.2 | 140.0 | Up | 07:41:36 - 08:11:36 | 4258 |
| Maupin | 07:56:37 | -36.3 | Dark | Down | 39.6 | 139.9 | Up | 07:41:37 - 08:11:37 | 4230 |
| PNWRO | 07:56:28 | -35.5 | Dark | Down | 39.8 | 142.9 | Up | 07:41:28 - 08:11:28 | 4216 |
| Sleaford | 07:55:34 | -28.4 | Dark | Down | 38.4 | 160.9 | Up | 07:40:34 - 08:10:34 | 4196 |
| Sisters | 07:56:41 | -37.2 | Dark | Down | 40.0 | 138.9 | Up | 07:41:41 - 08:11:41 | 4194 |
| Bend | 07:56:41 | -37.4 | Dark | Down | 40.3 | 139.1 | Up | 07:41:41 - 08:11:41 | 4172 |
| Oregon Observatory | 07:56:42 | -37.6 | Dark | Down | 40.4 | 138.8 | Up | 07:41:42 - 08:11:42 | 4165 |
| North Lake | 07:56:42 | -38.2 | Dark | Down | 41.1 | 139.1 | Up | 07:41:42 - 08:11:42 | 4111 |
| Chiloquin | 07:56:47 | -38.9 | Dark | Down | 41.2 | 137.6 | Up | 07:41:47 - 08:11:47 | 4098 |
| Klamath Falls | 07:56:48 | -39.2 | Dark | Down | 41.5 | 137.5 | Up | 07:41:48 - 08:11:48 | 4074 |
| Lakeview | 07:56:44 | -39.3 | Dark | Down | 42.2 | 139.2 | Up | 07:41:44 - 08:11:44 | 4029 |
| Fall River/Burney | 07:56:51 | -40.4 | Dark | Down | 42.5 | 137.3 | Up | 07:41:51 - 08:11:51 | 3988 |
| Cedarville | 07:56:46 | -40.0 | Dark | Down | 42.8 | 139.0 | Up | 07:41:46 - 08:11:46 | 3982 |
| Susanville | 07:56:50 | -41.1 | Dark | Down | 43.4 | 137.7 | Up | 07:41:50 - 08:11:50 | 3924 |
| Greenville | 07:56:52 | -41.3 | Dark | Down | 43.4 | 137.2 | Up | 07:41:52 - 08:11:52 | 3915 |
| Gimple | 07:56:52 | -41.3 | Dark | Down | 43.5 | 137.3 | Up | 07:41:52 - 08:11:52 | 3913 |
| Quincy | 07:56:53 | -41.5 | Dark | Down | 43.6 | 137.1 | Up | 07:41:53 - 08:11:53 | 3902 |
| Portola | 07:56:52 | -41.7 | Dark | Down | 43.9 | 137.6 | Up | 07:41:52 - 08:11:52 | 3879 |
| Reno | 07:56:50 | -41.9 | Dark | Down | 44.5 | 138.2 | Up | 07:41:50 - 08:11:50 | 3841 |
| Carson City | 07:56:52 | -42.3 | Dark | Down | 44.7 | 138.0 | Up | 07:41:52 - 08:11:52 | 3816 |
| Gardnerville | 07:56:52 | -42.6 | Dark | Down | 44.9 | 137.9 | Up | 07:41:52 - 08:11:52 | 3798 |
| Yerington | 07:56:50 | -42.5 | Dark | Down | 45.2 | 138.6 | Up | 07:41:50 - 08:11:50 | 3782 |
| Hawthorne | 07:56:50 | -43.0 | Dark | Down | 45.8 | 138.9 | Up | 07:41:50 - 08:11:50 | 3733 |
| Lee Vining | 07:56:53 | -43.5 | Dark | Down | 46.0 | 138.0 | Up | 07:41:53 - 08:11:53 | 3711 |
| Tonopah | 07:56:47 | -43.4 | Dark | Down | 46.9 | 140.4 | Up | 07:41:47 - 08:11:47 | 3655 |
| Bishop | 07:56:53 | -44.1 | Dark | Down | 46.8 | 138.4 | Up | 07:41:53 - 08:11:53 | 3645 |
| Beatty | 07:56:48 | -44.5 | Dark | Down | 48.0 | 140.1 | Up | 07:41:48 - 08:11:48 | 3557 |
| Indian Springs | 07:56:46 | -44.8 | Dark | Down | 48.8 | 141.3 | Up | 07:41:46 - 08:11:46 | 3497 |
| Henderson | 07:56:45 | -45.3 | Dark | Down | 49.6 | 141.8 | Up | 07:41:45 - 08:11:45 | 3434 |
| Wildwood | 07:57:03 | -47.4 | Dark | Down | 49.1 | 135.8 | Up | 07:42:03 - 08:12:03 | 3414 |
| Dunrhomin | 07:56:00 | -39.6 | Dark | Down | 49.7 | 158.0 | Up | 07:41:00 - 08:11:00 | 3407 |
| CU-SBO | 07:56:01 | -39.9 | Dark | Down | 49.9 | 157.8 | Up | 07:41:01 - 08:11:01 | 3392 |
| Laughlin/Bullhead City | 07:56:46 | -46.1 | Dark | Down | 50.5 | 141.7 | Up | 07:41:46 - 08:11:46 | 3355 |
| Patrick | 07:56:43 | -45.8 | Dark | Down | 50.6 | 142.9 | Up | 07:41:43 - 08:11:43 | 3349 |
| Kingman/Dolan Springs | 07:56:44 | -46.0 | Dark | Down | 50.7 | 142.5 | Up | 07:41:44 - 08:11:44 | 3339 |
| Mohave Valley | 07:56:47 | -46.4 | Dark | Down | 50.7 | 141.6 | Up | 07:41:47 - 08:11:47 | 3334 |
| Idyllwild | 07:56:58 | -47.7 | Dark | Down | 50.5 | 137.8 | Up | 07:41:58 - 08:11:58 | 3323 |
| Lake Havasu City | 07:56:47 | -46.8 | Dark | Down | 51.1 | 141.6 | Up | 07:41:47 - 08:11:47 | 3295 |
| Parker | 07:56:48 | -47.1 | Dark | Down | 51.4 | 141.4 | Up | 07:41:48 - 08:11:48 | 3268 |
| Calipatria | 07:56:55 | -48.2 | Dark | Down | 51.6 | 138.9 | Up | 07:41:55 - 08:11:55 | 3233 |
| Yuma | 07:56:53 | -48.6 | Dark | Down | 52.4 | 139.7 | Up | 07:41:53 - 08:11:53 | 3168 |
| George/Scottsdale | 07:56:40 | -47.2 | Dark | Down | 53.0 | 144.4 | Up | 07:41:40 - 08:11:40 | 3148 |
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 612175, (2025/08/31 07:56UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 38.65 83 Algenib 00:13:14.2 +15:11:01 2.8 13.80 121 44 Psc 00:25:24.2 +01:56:22 5.8 1.25 118 PPM 143521 00:27:20.3 +02:48:50 8.0 1.08 118 PPM 143589 00:31:50.9 +02:27:36 9.7 0.55 119 PPM 143564 00:30:15.5 +01:52:21 10.4 0.18 119 612175 00:30:22.7 +02:02:48 14.0 119 Positions are for J2000
Event circumstances last updated at 2022/05/04 22:56:14 UT
Marc W. Buie, Southwest Research Institute