Event between 12GX17 and star GA0780:04447168 with event index number of 2155000
Geocentric closest approach at 2022/05/04 08:58:47 UTC
J2000 position of star is 13:51:39.4 -10:49:10
Equinox of date position of star is 13:52:50.3 -10:55:42
Stellar brightness G=15.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 127 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=23.2
[RECON map]
TNO is 35.0 AU from the Sun
and 34.1 AU from the Earth.
The TNO is moving 25.2
km/sec on the sky relative to the star, or,
3.7 arcsec/hr.
The 1-sigma error in the time of the event is 233 seconds.
The 1-sigma cross-track error in the shadow position is
3889 km.
The sky-plane scale is
24709.6 km/arcsec.
The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 6.6 sec chord
Diameter=67.8 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
Star training set for 12GX17, (2022/05/04 08:59UT) Object RA Dec mag sep mel Spica 13:26:22.4 -11:16:38 1.0 6.50 121 PPM 196876 13:48:24.4 -09:49:14 6.2 1.56 125 PPM 227966 13:54:05.1 -10:47:32 7.9 0.33 127 PPM 227945 13:53:20.6 -11:02:55 9.5 0.17 127 12GX17 13:52:50.8 -10:55:45 15.2 127 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
3.9 sigma about the mid-time.
The median site spacing is 7.9 km
RECON observability=1.0 and success probability=5.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 08:58:46 | -17.2 | AT | Down | 17.0 | 224.6 | Really Low | 08:43:46 - 09:13:46 | 1562 |
| Kamloops | 08:59:12 | -22.0 | Dark | Down | 23.6 | 211.0 | Low | 08:44:12 - 09:14:12 | 1272 |
| Kelowna | 08:59:08 | -22.6 | Dark | Down | 24.0 | 212.1 | Low | 08:44:08 - 09:14:08 | 1264 |
| Peachland | 08:59:09 | -22.8 | Dark | Down | 24.2 | 211.8 | Low | 08:44:09 - 09:14:09 | 1254 |
| Penticton | 08:59:08 | -22.9 | Dark | Down | 24.3 | 212.1 | Low | 08:44:08 - 09:14:08 | 1251 |
| Summerland | 08:59:08 | -22.9 | Dark | Down | 24.3 | 212.0 | Low | 08:44:08 - 09:14:08 | 1251 |
| Oliver | 08:59:07 | -23.3 | Dark | Down | 24.6 | 212.2 | Low | 08:44:07 - 09:14:07 | 1239 |
| Anarchist Mountain Observatory | 08:59:06 | -23.4 | Dark | Down | 24.7 | 212.4 | Low | 08:44:06 - 09:14:06 | 1238 |
| Tonasket | 08:59:06 | -23.7 | Dark | Down | 25.0 | 212.4 | Low | 08:44:06 - 09:14:06 | 1225 |
| Okanogan | 08:59:05 | -24.1 | Dark | Down | 25.3 | 212.4 | Low | 08:44:05 - 09:14:05 | 1210 |
| Brewster | 08:59:05 | -24.4 | Dark | Down | 25.6 | 212.2 | Low | 08:44:05 - 09:14:05 | 1196 |
| Manson/Chelan | 08:59:05 | -24.6 | Dark | Down | 25.9 | 211.9 | Low | 08:44:05 - 09:14:05 | 1180 |
| Dunrhomin | 08:58:08 | -27.1 | Dark | Down | 24.9 | 228.4 | Low | 08:43:08 - 09:13:08 | 1167 |
| Wenatchee | 08:59:05 | -25.1 | Dark | Down | 26.4 | 211.8 | Low | 08:44:05 - 09:14:05 | 1159 |
| CU-SBO | 08:58:07 | -27.4 | Dark | Down | 25.1 | 228.4 | Low | 08:43:07 - 09:13:07 | 1154 |
| Ellensburg | 08:59:04 | -25.6 | Dark | Down | 26.8 | 211.7 | Low | 08:44:04 - 09:14:04 | 1138 |
| PNWRO | 08:58:58 | -26.2 | Dark | Down | 27.1 | 213.7 | Low | 08:43:58 - 09:13:58 | 1137 |
| Victoria | 08:59:15 | -24.6 | Dark | Down | 26.5 | 208.4 | Low | 08:44:15 - 09:14:15 | 1130 |
| Yakima | 08:59:03 | -26.0 | Dark | Down | 27.2 | 211.8 | Low | 08:44:03 - 09:14:03 | 1122 |
| Toppenish/White Swan | 08:59:02 | -26.1 | Dark | Down | 27.3 | 212.0 | Low | 08:44:02 - 09:14:02 | 1118 |
| Goldendale | 08:59:02 | -26.7 | Dark | Down | 27.9 | 211.8 | Low | 08:44:02 - 09:14:02 | 1086 |
| The Dalles | 08:59:02 | -27.0 | Dark | Down | 28.3 | 211.4 | Low | 08:44:02 - 09:14:02 | 1068 |
| Maupin | 08:59:01 | -27.4 | Dark | Down | 28.6 | 211.7 | Low | 08:44:01 - 09:14:01 | 1053 |
| Sisters | 08:59:00 | -28.4 | Dark | Down | 29.5 | 211.4 | Low | 08:44:00 - 09:14:00 | 1004 |
| Bend | 08:58:59 | -28.5 | Dark | Down | 29.6 | 211.7 | Low | 08:43:59 - 09:13:59 | 1000 |
| Oregon Observatory | 08:58:59 | -28.7 | Dark | Down | 29.8 | 211.7 | Low | 08:43:59 - 09:13:59 | 990 |
| North Lake | 08:58:56 | -29.2 | Dark | Down | 30.1 | 212.4 | Up | 08:43:56 - 09:13:56 | 974 |
| Lakeview | 08:58:52 | -30.1 | Dark | Down | 30.8 | 213.3 | Up | 08:43:52 - 09:13:52 | 940 |
| Chiloquin | 08:58:57 | -30.1 | Dark | Down | 31.1 | 211.6 | Up | 08:43:57 - 09:13:57 | 920 |
| Cedarville | 08:58:50 | -30.7 | Dark | Down | 31.3 | 213.7 | Up | 08:43:50 - 09:13:50 | 913 |
| Klamath Falls | 08:58:56 | -30.4 | Dark | Down | 31.4 | 211.8 | Up | 08:43:56 - 09:13:56 | 906 |
| Fall River/Burney | 08:58:52 | -31.5 | Dark | Down | 32.2 | 212.6 | Up | 08:43:52 - 09:13:52 | 859 |
| Susanville | 08:58:49 | -31.9 | Dark | Down | 32.4 | 213.6 | Up | 08:43:49 - 09:13:49 | 847 |
| Gimple | 08:58:48 | -32.2 | Dark | Down | 32.8 | 213.4 | Up | 08:43:48 - 09:13:48 | 827 |
| Greenville | 08:58:49 | -32.2 | Dark | Down | 32.8 | 213.4 | Up | 08:43:49 - 09:13:49 | 825 |
| Reno | 08:58:44 | -32.6 | Dark | Down | 32.8 | 214.7 | Up | 08:43:44 - 09:13:44 | 824 |
| Portola | 08:58:46 | -32.5 | Dark | Down | 32.9 | 214.0 | Up | 08:43:46 - 09:13:46 | 821 |
| Quincy | 08:58:48 | -32.4 | Dark | Down | 33.0 | 213.4 | Up | 08:43:48 - 09:13:48 | 815 |
| Tonopah | 08:58:33 | -33.3 | Dark | Down | 32.8 | 217.9 | Up | 08:43:33 - 09:13:33 | 813 |
| Yerington | 08:58:41 | -32.9 | Dark | Down | 33.0 | 215.6 | Up | 08:43:41 - 09:13:41 | 813 |
| Carson City | 08:58:43 | -32.9 | Dark | Down | 33.1 | 214.9 | Up | 08:43:43 - 09:13:43 | 807 |
| Hawthorne | 08:58:39 | -33.2 | Dark | Down | 33.1 | 216.3 | Up | 08:43:39 - 09:13:39 | 802 |
| Gardnerville | 08:58:43 | -33.1 | Dark | Down | 33.3 | 215.0 | Up | 08:43:43 - 09:13:43 | 795 |
| Indian Springs | 08:58:25 | -34.2 | Dark | Down | 33.2 | 220.1 | Up | 08:43:25 - 09:13:25 | 771 |
| Beatty | 08:58:29 | -34.2 | Dark | Down | 33.5 | 218.9 | Up | 08:43:29 - 09:13:29 | 762 |
| Lee Vining | 08:58:38 | -33.9 | Dark | Down | 33.8 | 216.0 | Up | 08:43:38 - 09:13:38 | 761 |
| Henderson | 08:58:22 | -34.5 | Dark | Down | 33.3 | 221.0 | Up | 08:43:22 - 09:13:22 | 758 |
| Patrick | 08:58:17 | -34.7 | Dark | Down | 33.1 | 222.3 | Up | 08:43:17 - 09:13:17 | 750 |
| Bishop | 08:58:35 | -34.3 | Dark | Down | 33.9 | 217.0 | Up | 08:43:35 - 09:13:35 | 746 |
| Kingman/Dolan Springs | 08:58:17 | -35.0 | Dark | Down | 33.4 | 222.2 | Up | 08:43:17 - 09:13:17 | 733 |
| Laughlin/Bullhead City | 08:58:18 | -35.1 | Dark | Down | 33.7 | 221.7 | Up | 08:43:18 - 09:13:18 | 719 |
| Mohave Valley | 08:58:17 | -35.4 | Dark | Down | 33.9 | 221.9 | Up | 08:43:17 - 09:13:17 | 704 |
| George/Scottsdale | 08:58:07 | -35.5 | Dark | Down | 33.3 | 225.0 | Up | 08:43:07 - 09:13:07 | 700 |
| Lake Havasu City | 08:58:16 | -35.7 | Dark | Down | 34.1 | 222.3 | Up | 08:43:16 - 09:13:16 | 687 |
| Parker | 08:58:15 | -36.0 | Dark | Down | 34.3 | 222.5 | Up | 08:43:15 - 09:13:15 | 667 |
| Idyllwild | 08:58:21 | -37.2 | Dark | Down | 35.9 | 220.3 | Up | 08:43:21 - 09:13:21 | 585 |
| Calipatria | 08:58:16 | -37.3 | Dark | Down | 35.8 | 221.7 | Up | 08:43:16 - 09:13:16 | 578 |
| Yuma | 08:58:12 | -37.4 | Dark | Down | 35.6 | 222.8 | Up | 08:43:12 - 09:13:12 | 574 |
| Wildwood | 08:58:27 | -37.4 | Dark | Down | 36.6 | 218.2 | Up | 08:43:27 - 09:13:27 | 557 |
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 12GX17, (2022/05/04 08:59UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 6.50 121 PPM 196876 13:47:13.4 -09:42:35 6.2 1.56 125 PPM 227966 13:52:53.7 -10:40:58 7.9 0.33 127 PPM 227945 13:52:09.1 -10:56:20 9.5 0.17 127 12GX17 13:51:39.4 -10:49:10 15.2 127 Positions are for J2000
Event circumstances last updated at 2022/03/14 01:01:52 UT
Marc W. Buie, Southwest Research Institute