Event between (523700) 14GM54 and star GA1040:17633015 with event index number of 2089984
Geocentric closest approach at 2026/08/17 06:51:55 UTC
J2000 position of star is 20:28:39.1 +14:09:17
Equinox of date position of star is 20:29:43.2 +14:13:55
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon.
Moon is 23% illuminated.
TNO apparent brightness V=21.9
[RECON map]
TNO is 29.3 AU from the Sun
and 28.4 AU from the Earth.
The TNO is moving 25.9
km/sec on the sky relative to the star, or,
4.5 arcsec/hr.
The 1-sigma error in the time of the event is 94 seconds.
The 1-sigma cross-track error in the shadow position is
2061 km.
The sky-plane scale is
20612.3 km/arcsec.
The TNO has an absolute magnitude Hv=7.2
Diameter=229.1 km assuming a 5% albedo -- 8.6 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E+6:4II
Star training set for 523700, (2026/08/17 06:52UT) Object RA Dec mag sep mel Deneb 20:42:20.4 +45:22:36 1.3 31.24 114 Tarazed 19:47:31.5 +10:40:48 2.7 10.94 100 4Zet Del 20:36:33.2 +14:46:03 4.7 1.69 112 PPM 138338 20:27:16.4 +13:59:59 7.9 0.68 110 PPM 138412 20:29:37.4 +14:33:02 9.6 0.31 110 PPM 138437 20:30:32.3 +14:19:50 11.5 0.18 111 523700 20:29:53.8 +14:14:41 16.6 111 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 30.1 km
RECON observability=1.0 and success probability=18.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 06:50:35 | -23.9 | Dark | Down | 53.5 | 181.3 | Up | 06:42:17 - 06:58:53 | 3193 |
| Victoria | 06:50:46 | -25.2 | Dark | Down | 55.6 | 176.2 | Up | 06:42:28 - 06:59:04 | 3150 |
| Peachland | 06:50:36 | -24.9 | Dark | Down | 54.4 | 182.3 | Up | 06:42:18 - 06:58:54 | 3099 |
| Kelowna | 06:50:35 | -24.8 | Dark | Down | 54.3 | 182.8 | Up | 06:42:17 - 06:58:53 | 3096 |
| Summerland | 06:50:36 | -25.0 | Dark | Down | 54.5 | 182.5 | Up | 06:42:18 - 06:58:54 | 3085 |
| Penticton | 06:50:36 | -25.1 | Dark | Down | 54.6 | 182.7 | Up | 06:42:18 - 06:58:54 | 3075 |
| Oliver | 06:50:36 | -25.5 | Dark | Down | 54.9 | 182.7 | Up | 06:42:18 - 06:58:54 | 3047 |
| Anarchist Mountain Observatory | 06:50:36 | -25.7 | Dark | Down | 55.1 | 183.0 | Up | 06:42:18 - 06:58:54 | 3027 |
| Okanogan | 06:50:38 | -26.2 | Dark | Down | 55.8 | 182.7 | Up | 06:42:20 - 06:58:56 | 2985 |
| Brewster | 06:50:39 | -26.4 | Dark | Down | 56.0 | 182.4 | Up | 06:42:21 - 06:58:57 | 2972 |
| Manson/Chelan | 06:50:40 | -26.5 | Dark | Down | 56.3 | 181.8 | Up | 06:42:22 - 06:58:58 | 2970 |
| Wenatchee | 06:50:42 | -26.9 | Dark | Down | 56.7 | 181.5 | Up | 06:42:24 - 06:59:00 | 2939 |
| Ellensburg | 06:50:43 | -27.3 | Dark | Down | 57.2 | 181.1 | Up | 06:42:25 - 06:59:01 | 2916 |
| Yakima | 06:50:44 | -27.7 | Dark | Down | 57.6 | 181.1 | Up | 06:42:26 - 06:59:02 | 2884 |
| Toppenish/White Swan | 06:50:44 | -27.9 | Dark | Down | 57.8 | 181.4 | Up | 06:42:26 - 06:59:02 | 2860 |
| The Dalles | 06:50:47 | -28.4 | Dark | Down | 58.6 | 180.0 | Up | 06:42:29 - 06:59:05 | 2831 |
| Sleaford | 06:50:01 | -24.4 | Dark | Down | 50.2 | 203.2 | Up | 06:41:43 - 06:58:19 | 2798 |
| Maupin | 06:50:48 | -28.9 | Dark | Down | 59.0 | 180.2 | Up | 06:42:30 - 06:59:06 | 2793 |
| PNWRO | 06:50:40 | -28.6 | Dark | Down | 58.1 | 184.2 | Up | 06:42:22 - 06:58:58 | 2769 |
| Sisters | 06:50:51 | -29.5 | Dark | Down | 59.9 | 179.3 | Up | 06:42:33 - 06:59:09 | 2743 |
| Bend | 06:50:50 | -29.8 | Dark | Down | 60.1 | 179.8 | Up | 06:42:32 - 06:59:08 | 2713 |
| Oregon Observatory | 06:50:51 | -30.0 | Dark | Down | 60.3 | 179.6 | Up | 06:42:33 - 06:59:09 | 2705 |
| Chiloquin | 06:50:55 | -31.1 | Dark | Down | 61.6 | 178.7 | Up | 06:42:37 - 06:59:13 | 2616 |
| Klamath Falls | 06:50:55 | -31.4 | Dark | Down | 61.9 | 178.9 | Up | 06:42:37 - 06:59:13 | 2584 |
| Fall River/Burney | 06:50:57 | -32.6 | Dark | Down | 63.1 | 179.7 | Up | 06:42:39 - 06:59:15 | 2469 |
| Cedarville | 06:50:53 | -32.5 | Dark | Down | 62.6 | 182.2 | Up | 06:42:35 - 06:59:11 | 2455 |
| Greenville | 06:50:57 | -33.6 | Dark | Down | 64.0 | 180.7 | Up | 06:42:39 - 06:59:15 | 2373 |
| Gimple | 06:50:57 | -33.6 | Dark | Down | 64.0 | 180.8 | Up | 06:42:39 - 06:59:15 | 2369 |
| Quincy | 06:50:58 | -33.8 | Dark | Down | 64.2 | 180.7 | Up | 06:42:40 - 06:59:16 | 2356 |
| Portola | 06:50:57 | -34.0 | Dark | Down | 64.3 | 181.7 | Up | 06:42:39 - 06:59:15 | 2323 |
| Reno | 06:50:55 | -34.4 | Dark | Down | 64.6 | 183.2 | Up | 06:42:37 - 06:59:13 | 2271 |
| Carson City | 06:50:56 | -34.8 | Dark | Down | 64.9 | 183.3 | Up | 06:42:38 - 06:59:14 | 2239 |
| Gardnerville | 06:50:57 | -35.0 | Dark | Down | 65.2 | 183.5 | Up | 06:42:39 - 06:59:15 | 2216 |
| Yerington | 06:50:55 | -35.1 | Dark | Down | 65.1 | 184.8 | Up | 06:42:37 - 06:59:13 | 2193 |
| Hawthorne | 06:50:54 | -35.7 | Dark | Down | 65.5 | 186.1 | Up | 06:42:36 - 06:59:12 | 2128 |
| Lee Vining | 06:50:57 | -36.1 | Dark | Down | 66.1 | 185.1 | Up | 06:42:39 - 06:59:15 | 2103 |
| Bishop | 06:50:56 | -36.9 | Dark | Down | 66.7 | 187.0 | Up | 06:42:38 - 06:59:14 | 2016 |
| Beatty | 06:50:52 | -37.7 | Dark | Down | 66.9 | 191.1 | Up | 06:42:34 - 06:59:10 | 1899 |
| Wildwood | 06:51:03 | -39.9 | Dark | Down | 69.9 | 187.6 | Up | 06:42:45 - 06:59:21 | 1736 |
| Dunrhomin | 06:50:13 | -36.3 | Dark | Down | 60.4 | 212.6 | Up | 06:41:55 - 06:58:31 | 1706 |
| CU-SBO | 06:50:14 | -36.5 | Dark | Down | 60.7 | 212.6 | Up | 06:41:56 - 06:58:32 | 1687 |
| Laughlin/Bullhead City | 06:50:49 | -39.9 | Dark | Down | 68.2 | 197.5 | Up | 06:42:31 - 06:59:07 | 1641 |
| Patrick | 06:50:47 | -39.9 | Dark | Down | 67.7 | 199.1 | Up | 06:42:29 - 06:59:05 | 1630 |
| Idyllwild | 06:50:58 | -40.8 | Dark | Down | 70.0 | 193.0 | Up | 06:42:40 - 06:59:16 | 1612 |
| Lake Havasu City | 06:50:50 | -40.6 | Dark | Down | 68.7 | 198.7 | Up | 06:42:32 - 06:59:08 | 1567 |
| Calipatria | 06:50:56 | -41.7 | Dark | Down | 70.3 | 196.7 | Up | 06:42:38 - 06:59:14 | 1499 |
| Yuma | 06:50:54 | -42.3 | Dark | Down | 70.5 | 199.5 | Up | 06:42:36 - 06:59:12 | 1417 |
| George/Scottsdale | 06:50:44 | -41.9 | Dark | Down | 68.7 | 205.7 | Up | 06:42:26 - 06:59:02 | 1381 |
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 523700, (2026/08/17 06:52UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 31.24 114 Tarazed 19:46:15.6 +10:36:48 2.7 10.94 100 4Zet Del 20:35:18.6 +14:40:27 4.7 1.69 112 PPM 138338 20:26:01.6 +13:54:41 7.9 0.68 110 PPM 138412 20:28:22.9 +14:27:39 9.6 0.31 110 PPM 138437 20:29:17.7 +14:14:26 11.5 0.18 111 523700 20:28:39.1 +14:09:17 16.6 111 Positions are for J2000
Event circumstances last updated at 2022/11/04 04:25:40 UT
Marc W. Buie, Southwest Research Institute