Event between (531076) 12DA99 and star GA0820:04368052 with event index number of 1600734
Geocentric closest approach at 2023/04/17 10:31:21 UTC
J2000 position of star is 13:28:23.4 -07:17:58
Equinox of date position of star is 13:29:36.3 -07:25:09
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 148 degrees from the moon.
Moon is 10% illuminated.
Apparent brightness V=22.9
[RECON map]
Object is 41.4 AU from the Sun
and 40.4 AU from the Earth.
Apparent velocity is 25.0
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is
2770 km.
The sky-plane scale is
29268.6 km/arcsec.
The object has an absolute magnitude Hv=6.8
Diameter=260.6 km assuming a 5% albedo -- 10.4 sec chord
Diameter=106.4 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 531076, (2023/04/17 10:30UT) Object RA Dec mag sep mel Spica 13:26:25.4 -11:16:56 1.0 3.94 147 72 Vir 13:31:38.8 -06:35:23 6.5 0.97 148 PPM 196531 13:28:54.3 -06:56:09 8.3 0.51 148 PPM 196539 13:29:14.1 -07:08:50 9.0 0.29 148 531076 13:29:36.5 -07:25:11 15.7 148 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 14.0 km
RECON observability=1.0 and success probability=7.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:30:38 | -13.3 | AT | Down | 14.5 | 237.0 | Really Low | 10:18:13 - 10:43:03 | -1634 |
| Kamloops | 10:30:59 | -20.7 | Dark | Down | 22.3 | 224.2 | Low | 10:18:34 - 10:43:24 | -1835 |
| Kelowna | 10:30:55 | -21.0 | Dark | Down | 22.5 | 225.3 | Low | 10:18:30 - 10:43:20 | -1854 |
| Peachland | 10:30:55 | -21.2 | Dark | Down | 22.7 | 225.0 | Low | 10:18:30 - 10:43:20 | -1862 |
| Summerland | 10:30:55 | -21.3 | Dark | Down | 22.7 | 225.2 | Low | 10:18:30 - 10:43:20 | -1867 |
| Penticton | 10:30:54 | -21.3 | Dark | Down | 22.7 | 225.3 | Low | 10:18:29 - 10:43:19 | -1868 |
| Oliver | 10:30:53 | -21.6 | Dark | Down | 23.0 | 225.4 | Low | 10:18:28 - 10:43:18 | -1882 |
| Anarchist Mountain Observatory | 10:30:53 | -21.6 | Dark | Down | 23.0 | 225.6 | Low | 10:18:28 - 10:43:18 | -1886 |
| Okanogan | 10:30:51 | -22.2 | Dark | Down | 23.6 | 225.6 | Low | 10:18:26 - 10:43:16 | -1916 |
| Brewster | 10:30:50 | -22.5 | Dark | Down | 23.9 | 225.5 | Low | 10:18:25 - 10:43:15 | -1930 |
| Manson/Chelan | 10:30:51 | -22.8 | Dark | Down | 24.2 | 225.2 | Low | 10:18:26 - 10:43:16 | -1944 |
| Victoria | 10:31:00 | -23.7 | Dark | Down | 25.2 | 221.9 | Low | 10:18:35 - 10:43:25 | -1966 |
| Wenatchee | 10:30:50 | -23.2 | Dark | Down | 24.6 | 225.2 | Low | 10:18:25 - 10:43:15 | -1967 |
| Ellensburg | 10:30:49 | -23.6 | Dark | Down | 25.0 | 225.1 | Low | 10:18:24 - 10:43:14 | -1988 |
| Yakima | 10:30:48 | -24.0 | Dark | Down | 25.3 | 225.2 | Low | 10:18:23 - 10:43:13 | -2007 |
| PNWRO | 10:30:43 | -23.6 | Dark | Down | 24.9 | 227.0 | Low | 10:18:18 - 10:43:08 | -2008 |
| Toppenish/White Swan | 10:30:48 | -24.1 | Dark | Down | 25.4 | 225.5 | Low | 10:18:23 - 10:43:13 | -2014 |
| The Dalles | 10:30:46 | -25.0 | Dark | Down | 26.3 | 225.0 | Low | 10:18:21 - 10:43:11 | -2062 |
| Maupin | 10:30:46 | -25.3 | Dark | Down | 26.5 | 225.2 | Low | 10:18:21 - 10:43:11 | -2080 |
| Dunrhomin | 10:29:55 | -19.9 | Dark | Down | 20.3 | 240.7 | Low | 10:17:30 - 10:42:20 | -2127 |
| Sisters | 10:30:44 | -26.2 | Dark | Down | 27.4 | 225.1 | Low | 10:18:19 - 10:43:09 | -2129 |
| Nikitin | 10:29:55 | -20.0 | Dark | Down | 20.4 | 240.7 | Low | 10:17:30 - 10:42:20 | -2136 |
| Bend | 10:30:43 | -26.2 | Dark | Down | 27.5 | 225.4 | Low | 10:18:18 - 10:43:08 | -2137 |
| CU-SBO | 10:29:55 | -20.1 | Dark | Down | 20.5 | 240.6 | Low | 10:17:30 - 10:42:20 | -2141 |
| Oregon Observatory | 10:30:42 | -26.4 | Dark | Down | 27.7 | 225.3 | Low | 10:18:17 - 10:43:07 | -2147 |
| Chiloquin | 10:30:40 | -27.6 | Dark | Down | 28.8 | 225.4 | Low | 10:18:15 - 10:43:05 | -2221 |
| Klamath Falls | 10:30:39 | -27.9 | Dark | Down | 29.0 | 225.6 | Low | 10:18:14 - 10:43:04 | -2238 |
| Cedarville | 10:30:33 | -27.6 | Dark | Down | 28.6 | 227.4 | Low | 10:18:08 - 10:42:58 | -2248 |
| Fall River/Burney | 10:30:34 | -28.6 | Dark | Down | 29.6 | 226.5 | Low | 10:18:09 - 10:42:59 | -2295 |
| Gimple | 10:30:31 | -29.0 | Dark | Down | 30.0 | 227.3 | Low | 10:18:06 - 10:42:56 | -2336 |
| Greenville | 10:30:30 | -29.0 | Dark | Down | 30.0 | 227.3 | Low | 10:18:05 - 10:42:55 | -2337 |
| Portola | 10:30:29 | -29.0 | Dark | Down | 30.0 | 227.8 | Low | 10:18:04 - 10:42:54 | -2347 |
| Quincy | 10:30:31 | -29.2 | Dark | Down | 30.1 | 227.3 | Up | 10:18:06 - 10:42:56 | -2348 |
| Reno | 10:30:27 | -28.9 | Dark | Down | 29.8 | 228.6 | Low | 10:18:02 - 10:42:52 | -2351 |
| Carson City | 10:30:25 | -29.1 | Dark | Down | 30.0 | 228.7 | Low | 10:18:00 - 10:42:50 | -2371 |
| Yerington | 10:30:23 | -28.9 | Dark | Down | 29.8 | 229.4 | Low | 10:17:58 - 10:42:48 | -2372 |
| Gardnerville | 10:30:24 | -29.3 | Dark | Down | 30.1 | 228.9 | Up | 10:17:59 - 10:42:49 | -2385 |
| Hawthorne | 10:30:20 | -29.0 | Dark | Down | 29.7 | 230.1 | Low | 10:17:55 - 10:42:45 | -2390 |
| Lee Vining | 10:30:20 | -29.6 | Dark | Down | 30.4 | 229.9 | Up | 10:17:55 - 10:42:45 | -2431 |
| Bishop | 10:30:17 | -29.7 | Dark | Down | 30.3 | 230.8 | Up | 10:17:52 - 10:42:42 | -2455 |
| Beatty | 10:30:11 | -29.0 | Dark | Down | 29.6 | 232.4 | Low | 10:17:46 - 10:42:36 | -2457 |
| Patrick | 10:30:00 | -28.3 | Dark | Down | 28.6 | 235.5 | Low | 10:17:35 - 10:42:25 | -2505 |
| Laughlin/Bullhead City | 10:30:00 | -28.9 | Dark | Down | 29.3 | 235.1 | Low | 10:17:35 - 10:42:25 | -2531 |
| Lake Havasu City | 10:29:58 | -29.2 | Dark | Down | 29.5 | 235.6 | Low | 10:17:33 - 10:42:23 | -2569 |
| George/Scottsdale | 10:29:50 | -28.1 | Dark | Down | 28.2 | 237.9 | Low | 10:17:25 - 10:42:15 | -2584 |
| Idyllwild | 10:30:02 | -31.2 | Dark | Down | 31.5 | 233.9 | Up | 10:17:37 - 10:42:27 | -2654 |
| Wildwood | 10:30:08 | -32.1 | Dark | Down | 32.5 | 232.1 | Up | 10:17:43 - 10:42:33 | -2663 |
| Calipatria | 10:29:58 | -30.8 | Dark | Down | 31.1 | 235.2 | Up | 10:17:33 - 10:42:23 | -2676 |
| Yuma | 10:29:54 | -30.5 | Dark | Down | 30.7 | 236.2 | Up | 10:17:29 - 10:42:19 | -2691 |
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 531076, (2023/04/17 10:30UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 3.94 147 72 Vir 13:30:25.8 -06:28:13 6.5 0.97 148 PPM 196531 13:27:41.2 -06:48:57 8.3 0.51 148 PPM 196539 13:28:01.0 -07:01:38 9.0 0.29 148 531076 13:28:23.4 -07:17:58 15.7 148 Positions are for J2000
Event circumstances last updated at 2023/03/27 03:04:53 UT
Marc W. Buie, Southwest Research Institute