Event between (530930) 11WG157 and star GA1340:02077462 with event index number of 2444019
Geocentric closest approach at 2026/03/01 02:44:59 UTC
J2000 position of star is 04:25:22.8 +44:04:42
Equinox of date position of star is 04:26:57.8 +44:07:40
Stellar brightness G=14.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon.
Moon is 93% illuminated.
TNO apparent brightness V=22.4
[RECON map]
TNO is 30.6 AU from the Sun
and 30.5 AU from the Earth.
The TNO is moving 11.7
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 201 seconds.
The 1-sigma cross-track error in the shadow position is
2348 km.
The sky-plane scale is
22155.7 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=211.8 km assuming a 5% albedo -- 18.2 sec chord
Diameter=86.5 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is 1:1
Star training set for 530930, (2026/03/01 02:47UT) Object RA Dec mag sep mel Aldebaran 04:37:25.5 +16:33:36 0.8 27.66 61 Mirphak 03:26:12.3 +49:57:08 1.8 11.88 70 PPM 046963 04:19:57.3 +42:12:11 6.1 2.35 62 PPM 047072 04:28:09.3 +44:48:37 8.1 0.69 60 PPM 047047 04:26:26.6 +44:15:28 10.0 0.19 60 530930 04:27:14.3 +44:08:11 14.6 60 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
4.5 sigma about the mid-time.
The median site spacing is 44.8 km
RECON observability=0.2 and success probability=7.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 02:44:56 | -19.6 | Dark | Up | 69.9 | 257.7 | Up | 02:29:56 - 02:59:56 | -3346 |
| Dunrhomin | 02:46:50 | -22.8 | Dark | Up | 68.2 | 289.7 | Up | 02:31:50 - 03:01:50 | -3488 |
| CU-SBO | 02:46:51 | -22.7 | Dark | Up | 68.2 | 290.3 | Up | 02:31:51 - 03:01:51 | -3501 |
| George/Scottsdale | 02:47:42 | -18.3 | Dark | Up | 69.6 | 307.3 | Up | 02:32:42 - 03:02:42 | -4206 |
| Kelowna | 02:44:57 | -11.4 | NT | Up | 78.7 | 244.9 | Up | 02:29:57 - 02:59:57 | -4291 |
| Penticton | 02:45:00 | -11.4 | NT | Up | 78.8 | 246.2 | Up | 02:30:00 - 03:00:00 | -4309 |
| Anarchist Mountain Observatory | 02:45:08 | -11.5 | NT | Up | 78.9 | 249.1 | Up | 02:30:08 - 03:00:08 | -4313 |
| Summerland | 02:44:59 | -11.3 | NT | Up | 78.9 | 245.6 | Up | 02:29:59 - 02:59:59 | -4314 |
| Peachland | 02:44:59 | -11.2 | NT | Up | 78.9 | 244.7 | Up | 02:29:59 - 02:59:59 | -4315 |
| Oliver | 02:45:05 | -11.4 | NT | Up | 79.0 | 247.9 | Up | 02:30:05 - 03:00:05 | -4321 |
| Kamloops | 02:44:48 | -10.8 | NT | Up | 78.8 | 239.1 | Up | 02:29:48 - 02:59:48 | -4323 |
| Patrick | 02:47:22 | -16.5 | AT | Up | 72.0 | 305.1 | Up | 02:32:22 - 03:02:22 | -4329 |
| Tonasket | 02:45:11 | -11.5 | NT | Up | 79.0 | 250.5 | Up | 02:30:11 - 03:00:11 | -4329 |
| Okanogan | 02:45:12 | -11.4 | NT | Up | 79.2 | 251.9 | Up | 02:30:12 - 03:00:12 | -4351 |
| Kingman/Dolan Springs | 02:47:27 | -16.4 | AT | Up | 72.0 | 305.8 | Up | 02:32:27 - 03:02:27 | -4352 |
| Brewster | 02:45:12 | -11.3 | NT | Up | 79.5 | 252.9 | Up | 02:30:12 - 03:00:12 | -4375 |
| PNWRO | 02:45:34 | -12.0 | AT | Up | 79.2 | 265.2 | Up | 02:30:34 - 03:00:34 | -4383 |
| Lake Havasu City | 02:47:32 | -16.2 | AT | Up | 71.8 | 307.7 | Up | 02:32:32 - 03:02:32 | -4397 |
| Laughlin/Bullhead City | 02:47:24 | -16.0 | AT | Up | 72.4 | 306.3 | Up | 02:32:24 - 03:02:24 | -4397 |
| Henderson | 02:47:16 | -15.6 | AT | Up | 73.2 | 304.5 | Up | 02:32:16 - 03:02:16 | -4404 |
| Mohave Valley | 02:47:25 | -16.0 | AT | Up | 72.2 | 307.0 | Up | 02:32:25 - 03:02:25 | -4406 |
| Parker | 02:47:36 | -16.3 | AT | Up | 71.5 | 308.5 | Up | 02:32:36 - 03:02:36 | -4406 |
| Manson/Chelan | 02:45:13 | -11.0 | NT | Up | 79.7 | 253.3 | Up | 02:30:13 - 03:00:13 | -4408 |
| Wenatchee | 02:45:19 | -10.9 | NT | Up | 80.0 | 255.6 | Up | 02:30:19 - 03:00:19 | -4436 |
| Indian Springs | 02:47:09 | -15.0 | AT | Up | 73.9 | 303.6 | Up | 02:32:09 - 03:02:09 | -4446 |
| Ellensburg | 02:45:21 | -10.8 | NT | Up | 80.2 | 257.6 | Up | 02:30:21 - 03:00:21 | -4467 |
| Toppenish/White Swan | 02:45:29 | -10.9 | NT | Up | 80.2 | 261.4 | Up | 02:30:29 - 03:00:29 | -4479 |
| Yuma | 02:47:48 | -16.1 | AT | Up | 70.8 | 312.0 | Up | 02:32:48 - 03:02:48 | -4482 |
| Yakima | 02:45:26 | -10.8 | NT | Up | 80.3 | 259.9 | Up | 02:30:26 - 03:00:26 | -4483 |
| Tonopah | 02:46:53 | -13.7 | AT | Up | 75.8 | 300.5 | Up | 02:31:53 - 03:01:53 | -4524 |
| Beatty | 02:47:06 | -14.1 | AT | Up | 74.9 | 303.7 | Up | 02:32:06 - 03:02:06 | -4526 |
| Goldendale | 02:45:34 | -10.7 | NT | Up | 80.5 | 264.1 | Up | 02:30:34 - 03:00:34 | -4529 |
| Calipatria | 02:47:39 | -15.3 | AT | Up | 71.6 | 312.1 | Up | 02:32:39 - 03:02:39 | -4547 |
| The Dalles | 02:45:34 | -10.4 | NT | Up | 80.8 | 265.1 | Up | 02:30:34 - 03:00:34 | -4564 |
| Maupin | 02:45:39 | -10.5 | NT | Up | 80.8 | 267.8 | Up | 02:30:39 - 03:00:39 | -4572 |
| Victoria | 02:45:04 | -8.8 | NT | Up | 81.5 | 242.2 | Up | 02:30:04 - 03:00:04 | -4608 |
| Hawthorne | 02:46:46 | -12.5 | AT | Up | 77.0 | 300.3 | Up | 02:31:46 - 03:01:46 | -4624 |
| Lakeview | 02:46:07 | -11.1 | NT | Up | 79.8 | 285.3 | Up | 02:31:07 - 03:01:07 | -4628 |
| Idyllwild | 02:47:34 | -14.3 | AT | Up | 72.8 | 312.2 | Up | 02:32:34 - 03:02:34 | -4629 |
| North Lake | 02:45:56 | -10.7 | NT | Up | 80.4 | 279.5 | Up | 02:30:56 - 03:00:56 | -4631 |
| Bend | 02:45:47 | -10.3 | NT | Up | 80.9 | 274.6 | Up | 02:30:47 - 03:00:47 | -4631 |
| Cedarville | 02:46:13 | -11.2 | NT | Up | 79.5 | 288.7 | Up | 02:31:13 - 03:01:13 | -4639 |
| Sisters | 02:45:46 | -10.2 | NT | Up | 81.1 | 273.0 | Up | 02:30:46 - 03:00:46 | -4642 |
| Bishop | 02:46:55 | -12.7 | AT | Up | 76.2 | 304.1 | Up | 02:31:55 - 03:01:55 | -4646 |
| Oregon Observatory | 02:45:48 | -10.2 | NT | Up | 80.9 | 275.6 | Up | 02:30:48 - 03:00:48 | -4648 |
| Yerington | 02:46:39 | -12.1 | AT | Up | 77.6 | 299.1 | Up | 02:31:39 - 03:01:39 | -4651 |
| Reno | 02:46:36 | -11.6 | NT | Up | 78.4 | 297.6 | Up | 02:31:36 - 03:01:36 | -4684 |
| Lee Vining | 02:46:49 | -12.1 | AT | Up | 77.1 | 303.0 | Up | 02:31:49 - 03:01:49 | -4685 |
| Carson City | 02:46:38 | -11.6 | NT | Up | 78.2 | 299.1 | Up | 02:31:38 - 03:01:38 | -4695 |
| Gardnerville | 02:46:38 | -11.6 | NT | Up | 78.0 | 300.0 | Up | 02:31:38 - 03:01:38 | -4700 |
| Susanville | 02:46:23 | -10.9 | NT | Up | 79.4 | 294.6 | Up | 02:31:23 - 03:01:23 | -4718 |
| Portola | 02:46:30 | -11.1 | NT | Up | 78.9 | 297.2 | Up | 02:31:30 - 03:01:30 | -4726 |
| Chiloquin | 02:45:59 | -10.0 | NT | Up | 81.0 | 283.8 | Up | 02:30:59 - 03:00:59 | -4730 |
| Klamath Falls | 02:46:03 | -10.0 | NT | Up | 80.8 | 285.8 | Up | 02:31:03 - 03:01:03 | -4737 |
| Gimple | 02:46:24 | -10.7 | NT | Up | 79.4 | 296.1 | Up | 02:31:24 - 03:01:24 | -4745 |
| Greenville | 02:46:28 | -10.7 | NT | Up | 79.4 | 296.2 | Up | 02:31:28 - 03:01:28 | -4752 |
| Fall River/Burney | 02:46:16 | -10.3 | NT | Up | 80.1 | 292.1 | Up | 02:31:16 - 03:01:16 | -4753 |
| Quincy | 02:46:26 | -10.7 | NT | Up | 79.3 | 297.2 | Up | 02:31:26 - 03:01:26 | -4759 |
| Wildwood | 02:47:27 | -12.7 | AT | Up | 74.2 | 313.9 | Up | 02:32:27 - 03:02:27 | -4781 |
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 530930, (2026/03/01 02:47UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 27.66 61 Mirphak 03:24:19.4 +49:51:40 1.8 11.88 70 PPM 046963 04:18:08.2 +42:08:27 6.1 2.35 62 PPM 047072 04:26:16.9 +44:45:10 8.1 0.69 60 PPM 047047 04:24:35.0 +44:11:58 10.0 0.19 60 530930 04:25:22.8 +44:04:42 14.6 60 Positions are for J2000
Event circumstances last updated at 2022/04/13 23:14:19 UT
Marc W. Buie, Southwest Research Institute