Event between (500835) 13GN137 and star GA0740:05281148 with event index number of 2328621
Geocentric closest approach at 2023/06/16 08:20:26 UTC
J2000 position of star is 14:49:46.7 -14:58:21
Equinox of date position of star is 14:51:04.0 -15:04:05
Stellar brightness G=14.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon.
Moon is 4% illuminated.
Apparent brightness V=23.6
[RECON map]
Object is 42.1 AU from the Sun
and 41.4 AU from the Earth.
Apparent velocity is 17.9
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 286 seconds.
The 1-sigma cross-track error in the shadow position is
2569 km.
The sky-plane scale is
29993.4 km/arcsec.
The object has an absolute magnitude Hv=7.3
Diameter=239.9 km assuming a 5% albedo -- 11.9 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CLASSICAL
Star training set for 500835, (2023/06/16 08:20UT) Object RA Dec mag sep mel Spica 13:26:25.9 -11:16:59 1.0 20.94 140 27Bet Lib 15:18:16.4 -09:28:05 2.6 8.69 162 7Mu Lib 14:50:36.4 -14:14:43 5.8 0.83 160 PPM 229377 14:52:21.5 -15:07:23 7.4 0.31 161 PPM 229358 14:51:43.5 -14:54:25 9.4 0.23 161 500835 14:51:04.5 -15:04:07 14.5 161 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
3.2 sigma about the mid-time.
The median site spacing is 23.8 km
RECON observability=0.4 and success probability=0.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 08:18:41 | -12.8 | AT | Down | 5.0 | 237.7 | Really Low | 08:03:41 - 08:33:41 | 7037 |
| Kamloops | 08:19:08 | -15.9 | AT | Down | 12.9 | 225.8 | Really Low | 08:04:08 - 08:34:08 | 7035 |
| Kelowna | 08:19:02 | -16.7 | AT | Down | 13.0 | 226.7 | Really Low | 08:04:02 - 08:34:02 | 7006 |
| Peachland | 08:19:02 | -16.8 | AT | Down | 13.3 | 226.4 | Really Low | 08:04:02 - 08:34:02 | 7002 |
| Summerland | 08:19:00 | -16.9 | AT | Down | 13.3 | 226.5 | Really Low | 08:04:00 - 08:34:00 | 6997 |
| Penticton | 08:19:01 | -17.0 | AT | Down | 13.3 | 226.7 | Really Low | 08:04:01 - 08:34:01 | 6994 |
| Oliver | 08:19:00 | -17.3 | AT | Down | 13.6 | 226.7 | Really Low | 08:04:00 - 08:34:00 | 6981 |
| Anarchist Mountain Observatory | 08:18:57 | -17.5 | AT | Down | 13.6 | 226.9 | Really Low | 08:03:57 - 08:33:57 | 6975 |
| Victoria | 08:19:07 | -18.1 | Dark | Down | 15.8 | 223.5 | Really Low | 08:04:07 - 08:34:07 | 6954 |
| Okanogan | 08:18:57 | -18.2 | Dark | Down | 14.1 | 226.8 | Really Low | 08:03:57 - 08:33:57 | 6950 |
| Brewster | 08:18:57 | -18.4 | Dark | Down | 14.4 | 226.7 | Really Low | 08:03:57 - 08:33:57 | 6939 |
| Manson/Chelan | 08:18:55 | -18.7 | Dark | Down | 14.7 | 226.4 | Really Low | 08:03:55 - 08:33:55 | 6931 |
| Wenatchee | 08:18:55 | -19.1 | Dark | Down | 15.2 | 226.4 | Really Low | 08:03:55 - 08:33:55 | 6912 |
| Ellensburg | 08:18:55 | -19.6 | Dark | Down | 15.5 | 226.3 | Really Low | 08:03:55 - 08:33:55 | 6895 |
| Yakima | 08:18:51 | -20.0 | Dark | Down | 15.8 | 226.3 | Really Low | 08:03:51 - 08:33:51 | 6878 |
| Toppenish/White Swan | 08:18:51 | -20.2 | Dark | Down | 15.9 | 226.5 | Really Low | 08:03:51 - 08:33:51 | 6869 |
| PNWRO | 08:18:45 | -20.5 | Dark | Down | 15.4 | 227.8 | Really Low | 08:03:45 - 08:33:45 | 6852 |
| The Dalles | 08:18:51 | -21.0 | Dark | Down | 16.8 | 226.0 | Really Low | 08:03:51 - 08:33:51 | 6835 |
| Maupin | 08:18:49 | -21.4 | Dark | Down | 17.1 | 226.2 | Really Low | 08:03:49 - 08:33:49 | 6816 |
| Sisters | 08:18:47 | -22.3 | Dark | Down | 18.0 | 225.9 | Really Low | 08:03:47 - 08:33:47 | 6777 |
| Bend | 08:18:46 | -22.5 | Dark | Down | 18.0 | 226.2 | Really Low | 08:03:46 - 08:33:46 | 6766 |
| Oregon Observatory | 08:18:44 | -22.7 | Dark | Down | 18.2 | 226.1 | Really Low | 08:03:44 - 08:33:44 | 6758 |
| Chiloquin | 08:18:40 | -24.0 | Dark | Down | 19.3 | 226.1 | Really Low | 08:03:40 - 08:33:40 | 6694 |
| Klamath Falls | 08:18:39 | -24.4 | Dark | Down | 19.5 | 226.2 | Really Low | 08:03:39 - 08:33:39 | 6677 |
| Cedarville | 08:18:30 | -25.0 | Dark | Down | 19.1 | 227.7 | Really Low | 08:03:30 - 08:33:30 | 6643 |
| Fall River/Burney | 08:18:33 | -25.5 | Dark | Down | 20.1 | 226.8 | Low | 08:03:33 - 08:33:33 | 6618 |
| Greenville | 08:18:29 | -26.4 | Dark | Down | 20.5 | 227.4 | Low | 08:03:29 - 08:33:29 | 6570 |
| Gimple | 08:18:29 | -26.4 | Dark | Down | 20.5 | 227.5 | Low | 08:03:29 - 08:33:29 | 6570 |
| Quincy | 08:18:27 | -26.6 | Dark | Down | 20.7 | 227.5 | Low | 08:03:27 - 08:33:27 | 6559 |
| Portola | 08:18:27 | -26.7 | Dark | Down | 20.5 | 227.9 | Low | 08:03:27 - 08:33:27 | 6553 |
| Reno | 08:18:23 | -27.0 | Dark | Down | 20.3 | 228.5 | Low | 08:03:23 - 08:33:23 | 6538 |
| Carson City | 08:18:21 | -27.3 | Dark | Down | 20.5 | 228.6 | Low | 08:03:21 - 08:33:21 | 6519 |
| Dunrhomin | 08:17:43 | -24.0 | Dark | Down | 10.9 | 239.5 | Really Low | 08:02:43 - 08:32:43 | 6517 |
| Yerington | 08:18:19 | -27.5 | Dark | Down | 20.3 | 229.2 | Low | 08:03:19 - 08:33:19 | 6508 |
| Nikitin | 08:17:42 | -24.1 | Dark | Down | 11.0 | 239.5 | Really Low | 08:02:42 - 08:32:42 | 6507 |
| Gardnerville | 08:18:20 | -27.6 | Dark | Down | 20.6 | 228.7 | Low | 08:03:20 - 08:33:20 | 6505 |
| CU-SBO | 08:17:42 | -24.2 | Dark | Down | 11.1 | 239.5 | Really Low | 08:02:42 - 08:32:42 | 6504 |
| Hawthorne | 08:18:16 | -27.9 | Dark | Down | 20.3 | 229.8 | Low | 08:03:16 - 08:33:16 | 6482 |
| Lee Vining | 08:18:15 | -28.5 | Dark | Down | 20.9 | 229.5 | Low | 08:03:15 - 08:33:15 | 6450 |
| Bishop | 08:18:10 | -29.0 | Dark | Down | 20.9 | 230.3 | Low | 08:03:10 - 08:33:10 | 6415 |
| Beatty | 08:18:02 | -29.3 | Dark | Down | 20.2 | 231.7 | Low | 08:03:02 - 08:33:02 | 6385 |
| Patrick | 08:17:48 | -30.4 | Dark | Down | 19.2 | 234.3 | Really Low | 08:02:48 - 08:32:48 | 6288 |
| Laughlin/Bullhead City | 08:17:48 | -30.8 | Dark | Down | 19.9 | 233.8 | Really Low | 08:02:48 - 08:32:48 | 6275 |
| Lake Havasu City | 08:17:46 | -31.4 | Dark | Down | 20.1 | 234.2 | Low | 08:02:46 - 08:32:46 | 6232 |
| Wildwood | 08:17:59 | -32.3 | Dark | Down | 23.1 | 231.1 | Low | 08:02:59 - 08:32:59 | 6216 |
| Idyllwild | 08:17:50 | -32.5 | Dark | Down | 22.1 | 232.6 | Low | 08:02:50 - 08:32:50 | 6191 |
| George/Scottsdale | 08:17:35 | -31.7 | Dark | Down | 18.9 | 236.2 | Really Low | 08:02:35 - 08:32:35 | 6173 |
| Calipatria | 08:17:45 | -32.9 | Dark | Down | 21.7 | 233.7 | Low | 08:02:45 - 08:32:45 | 6148 |
| Yuma | 08:17:40 | -33.2 | Dark | Down | 21.4 | 234.5 | Low | 08:02:40 - 08:32:40 | 6117 |
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 500835, (2023/06/16 08:20UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 20.94 140 27Bet Lib 15:17:00.3 -09:22:59 2.6 8.69 162 7Mu Lib 14:49:18.9 -14:08:56 5.8 0.83 160 PPM 229377 14:51:03.6 -15:01:39 7.4 0.31 161 PPM 229358 14:50:25.7 -14:48:40 9.4 0.23 161 500835 14:49:46.7 -14:58:21 14.5 161 Positions are for J2000
Event circumstances last updated at 2023/04/19 02:38:19 UT
Marc W. Buie, Southwest Research Institute