Event between (523800) 17KZ31 and star GA1060:03247960 with event index number of 2431993
Geocentric closest approach at 2023/01/29 07:53:59 UTC
J2000 position of star is 09:28:16.0 +17:21:35
Equinox of date position of star is 09:29:30.3 +17:15:42
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 92 degrees from the moon.
Moon is 57% illuminated.
TNO apparent brightness V=22.0
[RECON map]
TNO is 14.8 AU from the Sun
and 13.9 AU from the Earth.
The TNO is moving 38.4
km/sec on the sky relative to the star, or,
13.7 arcsec/hr.
The 1-sigma error in the time of the event is 24 seconds.
The 1-sigma cross-track error in the shadow position is
816 km.
The sky-plane scale is
10066.0 km/arcsec.
The TNO has an absolute magnitude Hv=10.3
Diameter=51.3 km assuming a 5% albedo -- 1.4 sec chord
Diameter=20.9 km assuming a 30% albedo -- 0.6 sec chord
Dynamical classification is CENTAURR
Star training set for 523800, (2023/01/29 07:54UT) Object RA Dec mag sep mel Regulus 10:09:35.9 +11:51:13 1.3 11.09 103 PPM 126439 09:26:49.0 +16:29:05 6.3 1.01 91 PPM 126508 09:30:49.8 +17:32:59 8.3 0.42 92 PPM 126481 09:29:12.6 +17:33:07 9.4 0.30 91 523800 09:29:32.9 +17:15:29 16.8 92 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 29.7 km
RECON observability=1.0 and success probability=57.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 07:54:38 | -55.1 | Dark | Up | 55.3 | 178.3 | Up | 07:52:10 - 07:57:06 | 469 |
| Kamloops | 07:55:01 | -57.1 | Dark | Up | 54.5 | 154.2 | Up | 07:52:33 - 07:57:29 | 1 |
| Kelowna | 07:54:59 | -58.0 | Dark | Up | 55.5 | 155.1 | Up | 07:52:31 - 07:57:27 | -56 |
| Peachland | 07:55:00 | -58.0 | Dark | Up | 55.5 | 154.6 | Up | 07:52:32 - 07:57:28 | -73 |
| Summerland | 07:54:59 | -58.2 | Dark | Up | 55.7 | 154.6 | Up | 07:52:31 - 07:57:27 | -85 |
| Penticton | 07:54:59 | -58.3 | Dark | Up | 55.7 | 154.8 | Up | 07:52:31 - 07:57:27 | -89 |
| Oliver | 07:54:59 | -58.6 | Dark | Up | 56.1 | 154.5 | Up | 07:52:31 - 07:57:27 | -122 |
| Anarchist Mountain Observatory | 07:54:59 | -58.8 | Dark | Up | 56.3 | 154.7 | Up | 07:52:31 - 07:57:27 | -134 |
| Tonasket | 07:54:59 | -59.1 | Dark | Up | 56.5 | 154.4 | Up | 07:52:31 - 07:57:27 | -165 |
| Okanogan | 07:54:59 | -59.4 | Dark | Up | 56.8 | 154.0 | Up | 07:52:31 - 07:57:27 | -200 |
| Brewster | 07:54:59 | -59.7 | Dark | Up | 57.0 | 153.4 | Up | 07:52:31 - 07:57:27 | -231 |
| Manson/Chelan | 07:55:00 | -59.8 | Dark | Up | 57.0 | 152.7 | Up | 07:52:32 - 07:57:28 | -259 |
| Victoria | 07:55:06 | -58.8 | Dark | Up | 55.4 | 147.9 | Up | 07:52:38 - 07:57:34 | -268 |
| Wenatchee | 07:55:00 | -60.3 | Dark | Up | 57.4 | 152.1 | Up | 07:52:32 - 07:57:28 | -309 |
| Ellensburg | 07:55:00 | -60.7 | Dark | Up | 57.7 | 151.4 | Up | 07:52:32 - 07:57:28 | -354 |
| Yakima | 07:55:00 | -61.1 | Dark | Up | 58.1 | 151.0 | Up | 07:52:32 - 07:57:28 | -393 |
| Toppenish/White Swan | 07:54:59 | -61.3 | Dark | Up | 58.3 | 151.2 | Up | 07:52:31 - 07:57:27 | -411 |
| PNWRO | 07:54:56 | -61.8 | Dark | Up | 59.1 | 153.5 | Up | 07:52:28 - 07:57:24 | -411 |
| Goldendale | 07:55:00 | -61.8 | Dark | Up | 58.6 | 150.0 | Up | 07:52:32 - 07:57:28 | -474 |
| The Dalles | 07:55:00 | -62.0 | Dark | Up | 58.7 | 149.2 | Up | 07:52:32 - 07:57:28 | -505 |
| Maupin | 07:55:00 | -62.4 | Dark | Up | 59.1 | 149.0 | Up | 07:52:32 - 07:57:28 | -543 |
| Dunrhomin | 07:54:25 | -66.0 | Dark | Up | 67.1 | 179.2 | Up | 07:51:57 - 07:56:53 | -575 |
| CU-SBO | 07:54:25 | -66.3 | Dark | Up | 67.4 | 179.0 | Up | 07:51:57 - 07:56:53 | -602 |
| Sisters | 07:55:01 | -63.2 | Dark | Up | 59.7 | 147.4 | Up | 07:52:33 - 07:57:29 | -641 |
| Bend | 07:55:00 | -63.5 | Dark | Up | 60.0 | 147.6 | Up | 07:52:32 - 07:57:28 | -659 |
| Oregon Observatory | 07:55:00 | -63.6 | Dark | Up | 60.1 | 147.2 | Up | 07:52:32 - 07:57:28 | -679 |
| North Lake | 07:54:59 | -64.3 | Dark | Up | 60.8 | 147.6 | Up | 07:52:31 - 07:57:27 | -730 |
| Chiloquin | 07:55:00 | -64.8 | Dark | Up | 61.0 | 145.2 | Up | 07:52:32 - 07:57:28 | -820 |
| Lakeview | 07:54:57 | -65.4 | Dark | Up | 61.9 | 147.5 | Up | 07:52:29 - 07:57:25 | -822 |
| Klamath Falls | 07:55:00 | -65.2 | Dark | Up | 61.3 | 145.0 | Up | 07:52:32 - 07:57:28 | -853 |
| Cedarville | 07:54:57 | -66.1 | Dark | Up | 62.5 | 147.2 | Up | 07:52:29 - 07:57:25 | -883 |
| Fall River/Burney | 07:54:59 | -66.4 | Dark | Up | 62.4 | 144.4 | Up | 07:52:31 - 07:57:27 | -962 |
| Susanville | 07:54:57 | -67.1 | Dark | Up | 63.3 | 145.0 | Up | 07:52:29 - 07:57:25 | -1008 |
| Gimple | 07:54:57 | -67.4 | Dark | Up | 63.4 | 144.3 | Up | 07:52:29 - 07:57:25 | -1041 |
| Greenville | 07:54:58 | -67.3 | Dark | Up | 63.4 | 144.2 | Up | 07:52:30 - 07:57:26 | -1043 |
| Quincy | 07:54:57 | -67.5 | Dark | Up | 63.5 | 143.9 | Up | 07:52:29 - 07:57:25 | -1064 |
| Portola | 07:54:56 | -67.7 | Dark | Up | 63.8 | 144.7 | Up | 07:52:28 - 07:57:24 | -1064 |
| Reno | 07:54:55 | -68.1 | Dark | Up | 64.3 | 145.6 | Up | 07:52:27 - 07:57:23 | -1074 |
| Carson City | 07:54:55 | -68.5 | Dark | Up | 64.6 | 145.2 | Up | 07:52:27 - 07:57:23 | -1110 |
| Yerington | 07:54:53 | -68.7 | Dark | Up | 65.1 | 146.3 | Up | 07:52:25 - 07:57:21 | -1113 |
| Gardnerville | 07:54:54 | -68.7 | Dark | Up | 64.9 | 145.0 | Up | 07:52:26 - 07:57:22 | -1134 |
| Hawthorne | 07:54:52 | -69.3 | Dark | Up | 65.7 | 146.8 | Up | 07:52:24 - 07:57:20 | -1146 |
| Tonopah | 07:54:48 | -69.9 | Dark | Up | 66.7 | 149.2 | Up | 07:52:20 - 07:57:16 | -1155 |
| Lee Vining | 07:54:52 | -69.8 | Dark | Up | 66.0 | 145.1 | Up | 07:52:24 - 07:57:20 | -1217 |
| Bishop | 07:54:50 | -70.4 | Dark | Up | 66.8 | 145.8 | Up | 07:52:22 - 07:57:18 | -1258 |
| Beatty | 07:54:47 | -71.0 | Dark | Up | 67.9 | 148.8 | Up | 07:52:19 - 07:57:15 | -1259 |
| Indian Springs | 07:54:44 | -71.4 | Dark | Up | 68.6 | 150.9 | Up | 07:52:16 - 07:57:12 | -1261 |
| Henderson | 07:54:42 | -71.9 | Dark | Up | 69.3 | 151.9 | Up | 07:52:14 - 07:57:10 | -1295 |
| Patrick | 07:54:39 | -72.5 | Dark | Up | 70.3 | 153.9 | Up | 07:52:11 - 07:57:07 | -1325 |
| Kingman/Dolan Springs | 07:54:40 | -72.7 | Dark | Up | 70.4 | 153.1 | Up | 07:52:12 - 07:57:08 | -1353 |
| Laughlin/Bullhead City | 07:54:41 | -72.8 | Dark | Up | 70.2 | 151.8 | Up | 07:52:13 - 07:57:09 | -1371 |
| Mohave Valley | 07:54:40 | -73.1 | Dark | Up | 70.5 | 151.4 | Up | 07:52:12 - 07:57:08 | -1399 |
| Lake Havasu City | 07:54:39 | -73.4 | Dark | Up | 70.9 | 151.5 | Up | 07:52:11 - 07:57:07 | -1432 |
| George/Scottsdale | 07:54:33 | -73.9 | Dark | Up | 72.5 | 157.4 | Up | 07:52:05 - 07:57:01 | -1433 |
| Parker | 07:54:39 | -73.8 | Dark | Up | 71.2 | 151.1 | Up | 07:52:11 - 07:57:07 | -1467 |
| Idyllwild | 07:54:44 | -74.2 | Dark | Up | 70.5 | 144.3 | Up | 07:52:16 - 07:57:12 | -1581 |
| Wildwood | 07:54:49 | -73.6 | Dark | Up | 69.3 | 140.5 | Up | 07:52:21 - 07:57:17 | -1599 |
| Calipatria | 07:54:41 | -74.8 | Dark | Up | 71.6 | 146.2 | Up | 07:52:13 - 07:57:09 | -1609 |
| Yuma | 07:54:39 | -75.3 | Dark | Up | 72.3 | 147.9 | Up | 07:52:11 - 07:57:07 | -1625 |
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 523800, (2023/01/29 07:54UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 11.09 103 PPM 126439 09:25:32.4 +16:35:07 6.3 1.01 91 PPM 126508 09:29:32.9 +17:39:07 8.3 0.42 92 PPM 126481 09:27:55.6 +17:39:12 9.4 0.30 91 523800 09:28:16.0 +17:21:35 16.8 92 Positions are for J2000
Event circumstances last updated at 2022/04/16 00:18:02 UT
Marc W. Buie, Southwest Research Institute