Event between (552678) 10JG210 and star GA0820:15200045 with event index number of 2223444
Geocentric closest approach at 2026/04/17 09:52:49 UTC
J2000 position of star is 18:52:53.9 -07:51:02
Equinox of date position of star is 18:54:08.2 -07:49:16
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=21.2
[RECON map]
TNO is 17.7 AU from the Sun
and 17.4 AU from the Earth.
The TNO is moving 4.3
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 451 seconds.
The 1-sigma cross-track error in the shadow position is
2350 km.
The sky-plane scale is
12629.0 km/arcsec.
The TNO has an absolute magnitude Hv=8.5
Diameter=114.3 km assuming a 5% albedo -- 27.4 sec chord
Diameter=46.7 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is CENTAURR
Star training set for 552678, (2026/04/17 09:51UT) Object RA Dec mag sep mel Antares 16:31:01.4 -26:29:17 0.9 38.78 137 Nunki 18:56:53.6 -26:15:42 2.0 18.45 104 Eta Sct 18:58:28.1 -05:48:36 4.8 2.25 100 PPM 202241 18:53:33.2 -07:13:31 8.4 0.62 101 PPM 202259 18:54:32.2 -07:49:12 9.4 0.05 101 552678 18:54:19.5 -07:49:00 16.7 101 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
2.0 sigma about the mid-time.
The median site spacing is 9.7 km
RECON observability=1.0 and success probability=1.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Wildwood | 10:07:03 | -35.3 | Dark | Down | 30.6 | 126.2 | Up | 09:52:03 - 10:22:03 | 8140 |
| Quincy | 10:08:45 | -31.7 | Dark | Down | 25.8 | 127.1 | Low | 09:53:45 - 10:23:45 | 8078 |
| Greenville | 10:08:45 | -31.6 | Dark | Down | 25.7 | 127.2 | Low | 09:53:45 - 10:23:45 | 8070 |
| Gimple | 10:08:50 | -31.5 | Dark | Down | 25.8 | 127.3 | Low | 09:53:50 - 10:23:50 | 8066 |
| Fall River/Burney | 10:08:59 | -31.0 | Dark | Down | 24.9 | 127.2 | Low | 09:53:59 - 10:23:59 | 8059 |
| Portola | 10:08:41 | -31.6 | Dark | Down | 26.2 | 127.5 | Low | 09:53:41 - 10:23:41 | 8056 |
| Gardnerville | 10:08:34 | -32.0 | Dark | Down | 27.2 | 127.7 | Low | 09:53:34 - 10:23:34 | 8047 |
| Lee Vining | 10:08:10 | -32.5 | Dark | Down | 28.1 | 127.8 | Low | 09:53:10 - 10:23:10 | 8046 |
| Carson City | 10:08:31 | -31.8 | Dark | Down | 27.0 | 127.8 | Low | 09:53:31 - 10:23:31 | 8041 |
| Klamath Falls | 10:09:20 | -30.2 | Dark | Down | 24.0 | 127.4 | Low | 09:54:20 - 10:24:20 | 8031 |
| Idyllwild | 10:07:01 | -34.5 | Dark | Down | 32.0 | 127.7 | Up | 09:52:01 - 10:22:01 | 8029 |
| Reno | 10:08:41 | -31.5 | Dark | Down | 26.8 | 127.9 | Low | 09:53:41 - 10:23:41 | 8029 |
| Bishop | 10:08:07 | -32.6 | Dark | Down | 28.9 | 128.1 | Low | 09:53:07 - 10:23:07 | 8022 |
| Chiloquin | 10:09:20 | -30.0 | Dark | Down | 23.8 | 127.4 | Low | 09:54:20 - 10:24:20 | 8021 |
| Yerington | 10:08:38 | -31.7 | Dark | Down | 27.5 | 128.3 | Low | 09:53:38 - 10:23:38 | 8011 |
| Hawthorne | 10:08:24 | -31.8 | Dark | Down | 28.1 | 128.5 | Low | 09:53:24 - 10:23:24 | 7996 |
| Cedarville | 10:09:20 | -30.1 | Dark | Down | 25.4 | 128.5 | Low | 09:54:20 - 10:24:20 | 7972 |
| Calipatria | 10:06:56 | -34.3 | Dark | Down | 33.2 | 128.4 | Up | 09:51:56 - 10:21:56 | 7966 |
| Oregon Observatory | 10:09:45 | -28.7 | Dark | Down | 23.3 | 128.3 | Low | 09:54:45 - 10:24:45 | 7942 |
| Beatty | 10:08:06 | -32.1 | Dark | Down | 30.2 | 129.4 | Up | 09:53:06 - 10:23:06 | 7935 |
| Sisters | 10:09:56 | -28.4 | Dark | Down | 23.0 | 128.4 | Low | 09:54:56 - 10:24:56 | 7930 |
| Bend | 10:09:50 | -28.5 | Dark | Down | 23.3 | 128.5 | Low | 09:54:50 - 10:24:50 | 7927 |
| Yuma | 10:06:59 | -34.0 | Dark | Down | 34.0 | 129.0 | Up | 09:51:59 - 10:21:59 | 7916 |
| Maupin | 10:10:13 | -27.4 | Dark | Down | 22.7 | 129.2 | Low | 09:55:13 - 10:25:13 | 7865 |
| The Dalles | 10:10:22 | -27.1 | Dark | Down | 22.4 | 129.3 | Low | 09:55:22 - 10:25:22 | 7851 |
| Lake Havasu City | 10:07:28 | -32.5 | Dark | Down | 33.2 | 130.3 | Up | 09:52:28 - 10:22:28 | 7847 |
| Laughlin/Bullhead City | 10:07:42 | -32.2 | Dark | Down | 32.6 | 130.5 | Up | 09:52:42 - 10:22:42 | 7845 |
| Victoria | 10:10:52 | -25.5 | Dark | Down | 19.5 | 128.2 | Really Low | 09:55:52 - 10:25:52 | 7820 |
| Patrick | 10:07:57 | -31.6 | Dark | Down | 32.9 | 131.3 | Up | 09:52:57 - 10:22:57 | 7790 |
| Toppenish/White Swan | 10:10:38 | -26.1 | Dark | Down | 22.4 | 130.3 | Low | 09:55:38 - 10:25:38 | 7775 |
| Yakima | 10:10:43 | -26.0 | Dark | Down | 22.2 | 130.2 | Low | 09:55:43 - 10:25:43 | 7773 |
| Ellensburg | 10:10:50 | -25.7 | Dark | Down | 21.9 | 130.4 | Low | 09:55:50 - 10:25:50 | 7754 |
| Wenatchee | 10:10:45 | -25.2 | Dark | Down | 21.8 | 130.7 | Low | 09:55:45 - 10:25:45 | 7723 |
| PNWRO | 10:10:38 | -25.8 | Dark | Down | 23.4 | 131.5 | Low | 09:55:38 - 10:25:38 | 7712 |
| George/Scottsdale | 10:07:38 | -31.5 | Dark | Down | 35.2 | 132.3 | Up | 09:52:38 - 10:22:38 | 7696 |
| Manson/Chelan | 10:11:06 | -24.8 | Dark | Down | 21.6 | 131.1 | Low | 09:56:06 - 10:26:06 | 7692 |
| Brewster | 10:11:04 | -24.4 | Dark | Down | 21.6 | 131.5 | Low | 09:56:04 - 10:26:04 | 7664 |
| Okanogan | 10:11:17 | -24.1 | Dark | Down | 21.6 | 131.8 | Low | 09:56:17 - 10:26:17 | 7641 |
| Oliver | 10:11:34 | -23.4 | Dark | Down | 21.1 | 132.1 | Low | 09:56:34 - 10:26:34 | 7601 |
| Anarchist Mountain Observatory | 10:11:20 | -23.5 | Dark | Down | 21.3 | 132.2 | Low | 09:56:20 - 10:26:20 | 7600 |
| Summerland | 10:11:30 | -23.1 | Dark | Down | 20.7 | 132.1 | Low | 09:56:30 - 10:26:30 | 7586 |
| Penticton | 10:11:35 | -23.1 | Dark | Down | 20.9 | 132.2 | Low | 09:56:35 - 10:26:35 | 7584 |
| Peachland | 10:11:32 | -23.1 | Dark | Down | 20.6 | 132.1 | Low | 09:56:32 - 10:26:32 | 7584 |
| Kamloops | 10:11:41 | -22.5 | Dark | Down | 19.7 | 131.8 | Really Low | 09:56:41 - 10:26:41 | 7567 |
| Kelowna | 10:11:41 | -22.8 | Dark | Down | 20.7 | 132.4 | Low | 09:56:41 - 10:26:41 | 7563 |
| CU-SBO | 10:10:16 | -23.1 | Dark | Down | 34.5 | 142.6 | Up | 09:55:16 - 10:25:16 | 7064 |
| Dunrhomin | 10:10:16 | -22.9 | Dark | Down | 34.4 | 142.8 | Up | 09:55:16 - 10:25:16 | 7050 |
| Sleaford | 10:13:19 | -15.3 | AT | Down | 24.7 | 146.7 | Low | 09:58:19 - 10:28:19 | 6741 |
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 552678, (2026/04/17 09:51UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 38.78 137 Nunki 18:55:15.9 -26:17:49 2.0 18.45 104 Eta Sct 18:57:03.8 -05:50:48 4.8 2.25 100 PPM 202241 18:52:08.0 -07:15:31 8.4 0.62 101 PPM 202259 18:53:06.6 -07:51:15 9.4 0.05 101 552678 18:52:53.9 -07:51:02 16.7 101 Positions are for J2000
Event circumstances last updated at 2022/11/02 01:58:09 UT
Marc W. Buie, Southwest Research Institute