Event between 04HX78 and star GA0780:10946460 with event index number of 2011898
Geocentric closest approach at 2026/05/21 09:01:27 UTC
J2000 position of star is 18:24:28.2 -11:07:40
Equinox of date position of star is 18:25:47.9 -11:06:47
Stellar brightness G=14.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon.
Moon is 28% illuminated.
Apparent brightness V=23.3
[RECON map]
Object is 33.9 AU from the Sun
and 33.1 AU from the Earth.
Apparent velocity is 18.8
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 541 seconds.
The 1-sigma cross-track error in the shadow position is
3178 km.
The sky-plane scale is
24010.7 km/arcsec.
The object has an absolute magnitude Hv=7.9
Diameter=159.2 km assuming a 5% albedo -- 8.5 sec chord
Diameter=65.0 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
Star training set for 04HX78, (2026/05/21 09:01UT) Object RA Dec mag sep mel Antares 16:31:01.8 -26:29:17 0.9 31.12 126 Nunki 18:56:54.0 -26:15:41 2.0 16.82 159 PPM 234462 18:24:40.8 -11:59:58 6.3 0.94 149 PPM 234491 18:25:57.2 -10:23:56 8.1 0.71 149 PPM 234486 18:25:42.6 -11:13:34 9.1 0.13 149 04HX78 18:25:56.2 -11:06:42 14.4 149 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
1.7 sigma about the mid-time.
The median site spacing is 16.8 km
RECON observability=1.0 and success probability=3.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 09:02:55 | -12.9 | AT | Down | 26.5 | 172.0 | Low | 08:47:55 - 09:17:55 | 6962 |
| Kamloops | 09:03:45 | -17.6 | AT | Down | 25.4 | 156.5 | Low | 08:48:45 - 09:18:45 | 6638 |
| Kelowna | 09:03:42 | -18.3 | Dark | Down | 26.4 | 157.3 | Low | 08:48:42 - 09:18:42 | 6606 |
| Peachland | 09:03:44 | -18.4 | Dark | Down | 26.4 | 157.0 | Low | 08:48:44 - 09:18:44 | 6594 |
| Summerland | 09:03:44 | -18.5 | Dark | Down | 26.6 | 157.0 | Low | 08:48:44 - 09:18:44 | 6586 |
| Penticton | 09:03:44 | -18.6 | Dark | Down | 26.7 | 157.1 | Low | 08:48:44 - 09:18:44 | 6585 |
| Oliver | 09:03:44 | -18.9 | Dark | Down | 27.0 | 157.1 | Low | 08:48:44 - 09:18:44 | 6563 |
| Anarchist Mountain Observatory | 09:03:44 | -19.0 | Dark | Down | 27.2 | 157.2 | Low | 08:48:44 - 09:18:44 | 6557 |
| Okanogan | 09:03:45 | -19.7 | Dark | Down | 27.7 | 156.9 | Low | 08:48:45 - 09:18:45 | 6512 |
| Brewster | 09:03:47 | -20.0 | Dark | Down | 27.9 | 156.6 | Low | 08:48:47 - 09:18:47 | 6491 |
| Manson/Chelan | 09:03:48 | -20.3 | Dark | Down | 28.0 | 156.2 | Low | 08:48:48 - 09:18:48 | 6471 |
| Victoria | 09:03:58 | -20.2 | Dark | Down | 26.5 | 152.9 | Low | 08:48:58 - 09:18:58 | 6448 |
| Wenatchee | 09:03:48 | -20.8 | Dark | Down | 28.4 | 155.9 | Low | 08:48:48 - 09:18:48 | 6437 |
| Ellensburg | 09:03:50 | -21.2 | Dark | Down | 28.7 | 155.6 | Low | 08:48:50 - 09:18:50 | 6406 |
| Yakima | 09:03:49 | -21.6 | Dark | Down | 29.1 | 155.5 | Low | 08:48:49 - 09:18:49 | 6379 |
| PNWRO | 09:03:44 | -21.8 | Dark | Down | 30.1 | 157.1 | Up | 08:48:44 - 09:18:44 | 6374 |
| Toppenish/White Swan | 09:03:49 | -21.8 | Dark | Down | 29.3 | 155.6 | Low | 08:48:49 - 09:18:49 | 6369 |
| The Dalles | 09:03:52 | -22.7 | Dark | Down | 29.8 | 154.6 | Low | 08:48:52 - 09:18:52 | 6301 |
| Maupin | 09:03:53 | -23.0 | Dark | Down | 30.2 | 154.6 | Up | 08:48:53 - 09:18:53 | 6275 |
| Dunrhomin | 09:02:51 | -22.8 | Dark | Down | 38.3 | 171.8 | Up | 08:47:51 - 09:17:51 | 6256 |
| Nikitin | 09:02:51 | -23.0 | Dark | Down | 38.4 | 171.8 | Up | 08:47:51 - 09:17:51 | 6242 |
| CU-SBO | 09:02:51 | -23.1 | Dark | Down | 38.5 | 171.7 | Up | 08:47:51 - 09:17:51 | 6236 |
| Sisters | 09:03:55 | -24.0 | Dark | Down | 30.9 | 153.8 | Up | 08:48:55 - 09:18:55 | 6205 |
| Bend | 09:03:55 | -24.2 | Dark | Down | 31.2 | 154.1 | Up | 08:48:55 - 09:18:55 | 6194 |
| Oregon Observatory | 09:03:56 | -24.4 | Dark | Down | 31.3 | 153.9 | Up | 08:48:56 - 09:18:56 | 6179 |
| Chiloquin | 09:03:59 | -25.7 | Dark | Down | 32.3 | 153.1 | Up | 08:48:59 - 09:18:59 | 6077 |
| Klamath Falls | 09:03:58 | -26.0 | Dark | Down | 32.7 | 153.0 | Up | 08:48:58 - 09:18:58 | 6055 |
| Cedarville | 09:03:52 | -26.4 | Dark | Down | 33.8 | 154.6 | Up | 08:48:52 - 09:18:52 | 6039 |
| Fall River/Burney | 09:03:57 | -27.1 | Dark | Down | 33.8 | 153.1 | Up | 08:48:57 - 09:18:57 | 5977 |
| Gimple | 09:03:56 | -27.8 | Dark | Down | 34.8 | 153.4 | Up | 08:48:56 - 09:18:56 | 5921 |
| Greenville | 09:03:56 | -27.8 | Dark | Down | 34.8 | 153.3 | Up | 08:48:56 - 09:18:56 | 5920 |
| Portola | 09:03:54 | -28.1 | Dark | Down | 35.3 | 153.8 | Up | 08:48:54 - 09:18:54 | 5906 |
| Quincy | 09:03:56 | -28.0 | Dark | Down | 35.0 | 153.3 | Up | 08:48:56 - 09:18:56 | 5905 |
| Reno | 09:03:52 | -28.2 | Dark | Down | 35.7 | 154.4 | Up | 08:48:52 - 09:18:52 | 5900 |
| Carson City | 09:03:53 | -28.5 | Dark | Down | 36.0 | 154.3 | Up | 08:48:53 - 09:18:53 | 5874 |
| Yerington | 09:03:48 | -28.5 | Dark | Down | 36.4 | 155.0 | Up | 08:48:48 - 09:18:48 | 5873 |
| Gardnerville | 09:03:52 | -28.7 | Dark | Down | 36.3 | 154.3 | Up | 08:48:52 - 09:18:52 | 5856 |
| Hawthorne | 09:03:47 | -28.8 | Dark | Down | 37.0 | 155.4 | Up | 08:48:47 - 09:18:47 | 5850 |
| Lee Vining | 09:03:50 | -29.5 | Dark | Down | 37.4 | 154.7 | Up | 08:48:50 - 09:18:50 | 5796 |
| Beatty | 09:03:40 | -29.8 | Dark | Down | 39.1 | 157.1 | Up | 08:48:40 - 09:18:40 | 5767 |
| Bishop | 09:03:47 | -29.9 | Dark | Down | 38.2 | 155.3 | Up | 08:48:47 - 09:18:47 | 5766 |
| Patrick | 09:03:28 | -30.3 | Dark | Down | 41.3 | 160.1 | Up | 08:48:28 - 09:18:28 | 5715 |
| Laughlin/Bullhead City | 09:03:31 | -30.8 | Dark | Down | 41.4 | 159.2 | Up | 08:48:31 - 09:18:31 | 5679 |
| Lake Havasu City | 09:03:29 | -31.3 | Dark | Down | 42.1 | 159.3 | Up | 08:48:29 - 09:18:29 | 5632 |
| George/Scottsdale | 09:03:19 | -31.1 | Dark | Down | 43.5 | 162.1 | Up | 08:48:19 - 09:18:19 | 5625 |
| Idyllwild | 09:03:41 | -32.8 | Dark | Down | 42.0 | 156.1 | Up | 08:48:41 - 09:18:41 | 5516 |
| Wildwood | 09:03:49 | -33.0 | Dark | Down | 41.0 | 153.9 | Up | 08:48:49 - 09:18:49 | 5501 |
| Calipatria | 09:03:36 | -32.9 | Dark | Down | 43.0 | 157.3 | Up | 08:48:36 - 09:18:36 | 5493 |
| Yuma | 09:03:31 | -33.0 | Dark | Down | 43.6 | 158.3 | Up | 08:48:31 - 09:18:31 | 5478 |
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 04HX78, (2026/05/21 09:01UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 31.12 126 Nunki 18:55:15.9 -26:17:49 2.0 16.82 159 PPM 234462 18:23:12.2 -12:00:54 6.3 0.94 149 PPM 234491 18:24:29.6 -10:24:54 8.1 0.71 149 PPM 234486 18:24:14.5 -11:14:32 9.1 0.13 149 04HX78 18:24:28.2 -11:07:40 14.4 149 Positions are for J2000
Event circumstances last updated at 2023/11/19 04:22:36 UT
Marc W. Buie, Southwest Research Institute