Event between (90482) Orcus and star GA0740:04593093 with event index number of 2409035
Geocentric closest approach at 2026/11/18 12:39:14 UTC
J2000 position of star is 10:47:09.9 -14:02:37
Equinox of date position of star is 10:48:22.6 -14:10:23
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon.
Moon is 60% illuminated.
Apparent brightness V=19.2
[RECON map]
Object is 48.0 AU from the Sun
and 48.3 AU from the Earth.
Apparent velocity is 18.1
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 109 seconds.
The 1-sigma cross-track error in the shadow position is
2089 km.
The sky-plane scale is
35052.5 km/arcsec.
The object has an absolute magnitude Hv=2.2
Diameter=2197.9 km assuming a 5% albedo -- 122.5 sec chord
Diameter=897.3 km assuming a 30% albedo -- 50.0 sec chord
Dynamical classification is 3:2E
Star training set for 90482, (2026/11/18 12:39UT) Object RA Dec mag sep mel Regulus 10:09:48.1 +11:50:05 1.3 27.73 172 Alphard 09:28:54.5 -08:46:35 2.0 20.22 156 PPM 223341 10:43:51.0 -14:06:57 6.0 1.13 158 PPM 223462 10:48:48.7 -14:07:18 8.2 0.10 158 90482 10:48:29.8 -14:11:09 16.7 158 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 20.8 km
RECON observability=0.8 and success probability=45.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 12:34:04 | -17.3 | AT | Down | 21.3 | 157.4 | Low | 12:24:27 - 12:43:41 | 1208 |
| Dunrhomin | 12:34:27 | -14.4 | AT | Down | 32.4 | 156.0 | Up | 12:24:50 - 12:44:04 | 605 |
| Nikitin | 12:34:26 | -14.4 | AT | Down | 32.5 | 155.9 | Up | 12:24:49 - 12:44:03 | 592 |
| CU-SBO | 12:34:26 | -14.5 | AT | Down | 32.6 | 155.8 | Up | 12:24:49 - 12:44:03 | 583 |
| Kamloops | 12:33:45 | -26.3 | Dark | Down | 18.0 | 143.0 | Really Low | 12:24:08 - 12:43:22 | 320 |
| Kelowna | 12:33:47 | -25.7 | Dark | Down | 19.0 | 143.7 | Really Low | 12:24:10 - 12:43:24 | 311 |
| Peachland | 12:33:46 | -25.9 | Dark | Down | 19.0 | 143.4 | Really Low | 12:24:09 - 12:43:23 | 287 |
| Penticton | 12:33:47 | -25.8 | Dark | Down | 19.2 | 143.5 | Really Low | 12:24:10 - 12:43:24 | 283 |
| Summerland | 12:33:47 | -25.8 | Dark | Down | 19.1 | 143.5 | Really Low | 12:24:10 - 12:43:24 | 281 |
| Oliver | 12:33:47 | -25.8 | Dark | Down | 19.5 | 143.5 | Really Low | 12:24:10 - 12:43:24 | 258 |
| Anarchist Mountain Observatory | 12:33:48 | -25.6 | Dark | Down | 19.7 | 143.6 | Really Low | 12:24:11 - 12:43:25 | 257 |
| Okanogan | 12:33:48 | -25.8 | Dark | Down | 20.1 | 143.3 | Low | 12:24:11 - 12:43:25 | 199 |
| Brewster | 12:33:48 | -25.9 | Dark | Down | 20.3 | 143.0 | Low | 12:24:11 - 12:43:25 | 168 |
| Manson/Chelan | 12:33:48 | -26.2 | Dark | Down | 20.3 | 142.6 | Low | 12:24:11 - 12:43:25 | 133 |
| Wenatchee | 12:33:48 | -26.3 | Dark | Down | 20.6 | 142.4 | Low | 12:24:11 - 12:43:25 | 89 |
| PNWRO | 12:33:52 | -25.2 | Dark | Down | 22.3 | 143.4 | Low | 12:24:15 - 12:43:29 | 73 |
| Ellensburg | 12:33:48 | -26.4 | Dark | Down | 20.8 | 142.1 | Low | 12:24:11 - 12:43:25 | 47 |
| Yakima | 12:33:49 | -26.4 | Dark | Down | 21.1 | 142.0 | Low | 12:24:12 - 12:43:26 | 17 |
| Toppenish/White Swan | 12:33:49 | -26.3 | Dark | Down | 21.4 | 142.1 | Low | 12:24:12 - 12:43:26 | 11 |
| Victoria | 12:33:43 | -28.3 | Dark | Down | 18.4 | 139.7 | Really Low | 12:24:06 - 12:43:20 | -1 |
| The Dalles | 12:33:50 | -26.8 | Dark | Down | 21.7 | 141.1 | Low | 12:24:13 - 12:43:27 | -91 |
| Maupin | 12:33:50 | -26.7 | Dark | Down | 22.0 | 141.1 | Low | 12:24:13 - 12:43:27 | -115 |
| Sisters | 12:33:51 | -27.1 | Dark | Down | 22.5 | 140.4 | Low | 12:24:14 - 12:43:28 | -209 |
| Bend | 12:33:52 | -26.9 | Dark | Down | 22.8 | 140.6 | Low | 12:24:15 - 12:43:29 | -211 |
| Oregon Observatory | 12:33:51 | -27.0 | Dark | Down | 22.9 | 140.5 | Low | 12:24:14 - 12:43:28 | -232 |
| George/Scottsdale | 12:34:29 | -18.3 | Dark | Down | 35.5 | 146.7 | Up | 12:24:52 - 12:44:06 | -285 |
| Patrick | 12:34:21 | -20.2 | Dark | Down | 33.2 | 145.2 | Up | 12:24:44 - 12:43:58 | -322 |
| Cedarville | 12:33:57 | -25.9 | Dark | Down | 25.3 | 141.0 | Low | 12:24:20 - 12:43:34 | -325 |
| Chiloquin | 12:33:52 | -27.2 | Dark | Down | 23.7 | 139.7 | Low | 12:24:15 - 12:43:29 | -354 |
| Klamath Falls | 12:33:53 | -27.2 | Dark | Down | 24.0 | 139.7 | Low | 12:24:16 - 12:43:30 | -375 |
| Laughlin/Bullhead City | 12:34:20 | -20.8 | Dark | Down | 33.1 | 144.4 | Up | 12:24:43 - 12:43:57 | -390 |
| Lake Havasu City | 12:34:22 | -20.4 | Dark | Down | 33.7 | 144.4 | Up | 12:24:45 - 12:43:59 | -416 |
| Beatty | 12:34:12 | -22.8 | Dark | Down | 30.6 | 142.8 | Up | 12:24:35 - 12:43:49 | -426 |
| Fall River/Burney | 12:33:56 | -26.8 | Dark | Down | 25.1 | 139.7 | Low | 12:24:19 - 12:43:33 | -437 |
| Hawthorne | 12:34:06 | -24.5 | Dark | Down | 28.4 | 141.5 | Low | 12:24:29 - 12:43:43 | -439 |
| Yerington | 12:34:04 | -24.9 | Dark | Down | 27.8 | 141.2 | Low | 12:24:27 - 12:43:41 | -442 |
| Reno | 12:34:02 | -25.5 | Dark | Down | 27.0 | 140.7 | Low | 12:24:25 - 12:43:39 | -445 |
| Portola | 12:34:00 | -26.0 | Dark | Down | 26.5 | 140.2 | Low | 12:24:23 - 12:43:37 | -468 |
| Carson City | 12:34:02 | -25.5 | Dark | Down | 27.3 | 140.6 | Low | 12:24:25 - 12:43:39 | -470 |
| Gimple | 12:33:59 | -26.4 | Dark | Down | 26.0 | 139.9 | Low | 12:24:22 - 12:43:36 | -470 |
| Greenville | 12:33:59 | -26.4 | Dark | Down | 26.0 | 139.9 | Low | 12:24:22 - 12:43:36 | -475 |
| Gardnerville | 12:34:03 | -25.4 | Dark | Down | 27.5 | 140.6 | Low | 12:24:26 - 12:43:40 | -484 |
| Quincy | 12:33:59 | -26.4 | Dark | Down | 26.2 | 139.8 | Low | 12:24:22 - 12:43:36 | -490 |
| Bishop | 12:34:08 | -24.2 | Dark | Down | 29.4 | 141.4 | Low | 12:24:31 - 12:43:45 | -506 |
| Lee Vining | 12:34:06 | -24.8 | Dark | Down | 28.6 | 140.9 | Low | 12:24:29 - 12:43:43 | -513 |
| Yuma | 12:34:26 | -20.4 | Dark | Down | 35.0 | 143.4 | Up | 12:24:49 - 12:44:03 | -561 |
| Calipatria | 12:34:23 | -21.2 | Dark | Down | 34.2 | 142.6 | Up | 12:24:46 - 12:44:00 | -598 |
| Idyllwild | 12:34:20 | -22.3 | Dark | Down | 33.1 | 141.7 | Up | 12:24:43 - 12:43:57 | -642 |
| Wildwood | 12:34:16 | -23.9 | Dark | Down | 31.9 | 140.0 | Up | 12:24:39 - 12:43:53 | -752 |
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 90482, (2026/11/18 12:39UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 27.73 172 Alphard 09:27:35.2 -08:39:30 2.0 20.22 156 PPM 223341 10:42:31.3 -13:58:28 6.0 1.13 158 PPM 223462 10:47:28.8 -13:58:46 8.2 0.10 158 90482 10:47:09.9 -14:02:37 16.7 158 Positions are for J2000
Event circumstances last updated at 2024/06/20 21:25:51 UT
Marc W. Buie, Southwest Research Institute