Event between 05UN524 and star GA1260:03311369 with event index number of 1957767
Geocentric closest approach at 2023/02/03 05:36:51 UTC
J2000 position of star is 08:33:35.6 +37:56:51
Equinox of date position of star is 08:35:01.9 +37:52:14
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 20 degrees from the moon.
Moon is 94% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 19.0 AU from the Sun
and 18.1 AU from the Earth.
The TNO is moving 22.4
km/sec on the sky relative to the star, or,
6.1 arcsec/hr.
The 1-sigma error in the time of the event is 48 seconds.
The 1-sigma cross-track error in the shadow position is
686 km.
The sky-plane scale is
13148.7 km/arcsec.
The TNO has an absolute magnitude Hv=8.8
Diameter=102.8 km assuming a 5% albedo -- 4.7 sec chord
Diameter=42.0 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
Star training set for 05UN524, (2023/02/03 05:37UT) Object RA Dec mag sep mel Pollux 07:46:43.6 +27:58:07 1.1 14.15 7 PPM 073799 08:34:24.7 +37:56:08 5.9 0.15 20 PPM 073770 08:32:49.5 +37:11:07 6.0 0.82 19 PPM 073799 08:34:24.7 +37:56:08 5.9 0.15 20 05UN524 08:35:05.4 +37:52:03 16.5 20 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 34.8 km
RECON observability=1.0 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 05:37:55 | -49.4 | Dark | Up | 71.7 | 133.9 | Up | 05:33:28 - 05:42:23 | 5209 |
| Kamloops | 05:38:38 | -43.8 | Dark | Up | 64.7 | 108.2 | Up | 05:34:10 - 05:43:05 | 5132 |
| Kelowna | 05:38:36 | -44.7 | Dark | Up | 65.5 | 107.6 | Up | 05:34:09 - 05:43:04 | 5035 |
| Peachland | 05:38:37 | -44.6 | Dark | Up | 65.4 | 107.0 | Up | 05:34:10 - 05:43:05 | 5026 |
| Summerland | 05:38:37 | -44.7 | Dark | Up | 65.5 | 106.8 | Up | 05:34:10 - 05:43:05 | 5009 |
| Penticton | 05:38:36 | -44.8 | Dark | Up | 65.6 | 106.8 | Up | 05:34:09 - 05:43:04 | 5001 |
| Oliver | 05:38:37 | -45.0 | Dark | Up | 65.7 | 106.1 | Up | 05:34:10 - 05:43:05 | 4963 |
| Anarchist Mountain Observatory | 05:38:37 | -45.2 | Dark | Up | 65.8 | 105.9 | Up | 05:34:09 - 05:43:04 | 4942 |
| Victoria | 05:38:49 | -43.2 | Dark | Up | 63.4 | 100.6 | Up | 05:34:22 - 05:43:17 | 4938 |
| Tonasket | 05:38:37 | -45.4 | Dark | Up | 65.9 | 105.2 | Up | 05:34:10 - 05:43:05 | 4910 |
| Okanogan | 05:38:38 | -45.5 | Dark | Up | 65.9 | 104.3 | Up | 05:34:11 - 05:43:06 | 4875 |
| Brewster | 05:38:39 | -45.5 | Dark | Up | 65.8 | 103.5 | Up | 05:34:11 - 05:43:06 | 4848 |
| Manson/Chelan | 05:38:40 | -45.4 | Dark | Up | 65.6 | 102.6 | Up | 05:34:13 - 05:43:08 | 4829 |
| Wenatchee | 05:38:41 | -45.5 | Dark | Up | 65.6 | 101.4 | Up | 05:34:14 - 05:43:09 | 4779 |
| Ellensburg | 05:38:42 | -45.6 | Dark | Up | 65.5 | 100.3 | Up | 05:34:15 - 05:43:10 | 4737 |
| Yakima | 05:38:43 | -45.8 | Dark | Up | 65.6 | 99.4 | Up | 05:34:15 - 05:43:10 | 4693 |
| Toppenish/White Swan | 05:38:43 | -46.0 | Dark | Up | 65.7 | 99.1 | Up | 05:34:15 - 05:43:10 | 4668 |
| Goldendale | 05:38:44 | -46.0 | Dark | Up | 65.5 | 97.5 | Up | 05:34:17 - 05:43:12 | 4613 |
| PNWRO | 05:38:38 | -47.1 | Dark | Up | 66.8 | 99.8 | Up | 05:34:11 - 05:43:06 | 4611 |
| The Dalles | 05:38:46 | -45.9 | Dark | Up | 65.3 | 96.7 | Up | 05:34:18 - 05:43:13 | 4593 |
| Maupin | 05:38:46 | -46.2 | Dark | Up | 65.4 | 95.9 | Up | 05:34:18 - 05:43:13 | 4546 |
| Sisters | 05:38:48 | -46.3 | Dark | Up | 65.2 | 93.6 | Up | 05:34:21 - 05:43:16 | 4456 |
| Bend | 05:38:48 | -46.5 | Dark | Up | 65.4 | 93.3 | Up | 05:34:20 - 05:43:15 | 4427 |
| Oregon Observatory | 05:38:48 | -46.5 | Dark | Up | 65.3 | 92.8 | Up | 05:34:20 - 05:43:15 | 4409 |
| North Lake | 05:38:47 | -47.2 | Dark | Up | 65.7 | 91.8 | Up | 05:34:20 - 05:43:15 | 4333 |
| Chiloquin | 05:38:51 | -46.8 | Dark | Up | 65.0 | 89.7 | Up | 05:34:23 - 05:43:18 | 4271 |
| Klamath Falls | 05:38:51 | -47.0 | Dark | Up | 65.1 | 89.0 | Up | 05:34:23 - 05:43:18 | 4233 |
| Lakeview | 05:38:46 | -48.0 | Dark | Up | 66.1 | 89.8 | Up | 05:34:18 - 05:43:13 | 4210 |
| Cedarville | 05:38:46 | -48.4 | Dark | Up | 66.2 | 88.4 | Up | 05:34:18 - 05:43:13 | 4136 |
| Fall River/Burney | 05:38:51 | -47.8 | Dark | Up | 65.3 | 86.7 | Up | 05:34:23 - 05:43:18 | 4099 |
| Susanville | 05:38:48 | -48.5 | Dark | Up | 65.8 | 85.7 | Up | 05:34:21 - 05:43:16 | 4019 |
| Greenville | 05:38:50 | -48.4 | Dark | Up | 65.6 | 84.9 | Up | 05:34:22 - 05:43:17 | 3993 |
| Gimple | 05:38:49 | -48.5 | Dark | Up | 65.6 | 85.0 | Up | 05:34:22 - 05:43:17 | 3992 |
| Quincy | 05:38:50 | -48.5 | Dark | Up | 65.6 | 84.5 | Up | 05:34:22 - 05:43:17 | 3971 |
| Portola | 05:38:48 | -48.9 | Dark | Up | 65.9 | 84.4 | Up | 05:34:20 - 05:43:15 | 3951 |
| Reno | 05:38:47 | -49.4 | Dark | Up | 66.4 | 84.1 | Up | 05:34:19 - 05:43:14 | 3913 |
| Dunrhomin | 05:37:53 | -58.4 | Dark | Up | 77.4 | 95.4 | Up | 05:33:26 - 05:42:21 | 3906 |
| CU-SBO | 05:37:54 | -58.6 | Dark | Up | 77.4 | 94.2 | Up | 05:33:26 - 05:42:21 | 3879 |
| Carson City | 05:38:46 | -49.6 | Dark | Up | 66.3 | 83.3 | Up | 05:34:19 - 05:43:14 | 3874 |
| Gardnerville | 05:38:46 | -49.7 | Dark | Up | 66.4 | 82.8 | Up | 05:34:19 - 05:43:14 | 3846 |
| Yerington | 05:38:45 | -50.1 | Dark | Up | 66.8 | 83.1 | Up | 05:34:17 - 05:43:12 | 3844 |
| Hawthorne | 05:38:43 | -50.7 | Dark | Up | 67.2 | 82.3 | Up | 05:34:15 - 05:43:10 | 3787 |
| Lee Vining | 05:38:45 | -50.6 | Dark | Up | 66.7 | 80.8 | Up | 05:34:17 - 05:43:12 | 3731 |
| Tonopah | 05:38:38 | -51.9 | Dark | Up | 68.2 | 81.6 | Up | 05:34:11 - 05:43:06 | 3720 |
| Bishop | 05:38:43 | -51.3 | Dark | Up | 67.2 | 79.6 | Up | 05:34:15 - 05:43:10 | 3656 |
| Beatty | 05:38:37 | -52.7 | Dark | Up | 68.3 | 78.9 | Up | 05:34:09 - 05:43:04 | 3588 |
| Indian Springs | 05:38:33 | -53.6 | Dark | Up | 69.1 | 78.3 | Up | 05:34:06 - 05:43:01 | 3541 |
| Henderson | 05:38:30 | -54.3 | Dark | Up | 69.5 | 77.0 | Up | 05:34:03 - 05:42:58 | 3476 |
| Patrick | 05:38:27 | -55.4 | Dark | Up | 70.2 | 75.4 | Up | 05:33:59 - 05:42:54 | 3398 |
| Laughlin/Bullhead City | 05:38:29 | -55.0 | Dark | Up | 69.6 | 74.7 | Up | 05:34:02 - 05:42:57 | 3377 |
| Kingman/Dolan Springs | 05:38:27 | -55.3 | Dark | Up | 70.0 | 74.8 | Up | 05:34:00 - 05:42:55 | 3375 |
| Mohave Valley | 05:38:30 | -55.1 | Dark | Up | 69.6 | 74.0 | Up | 05:34:02 - 05:42:57 | 3346 |
| Lake Havasu City | 05:38:29 | -55.4 | Dark | Up | 69.6 | 73.0 | Up | 05:34:01 - 05:42:56 | 3300 |
| Wildwood | 05:38:45 | -52.3 | Dark | Up | 66.2 | 72.2 | Up | 05:34:17 - 05:43:12 | 3300 |
| Parker | 05:38:28 | -55.6 | Dark | Up | 69.6 | 72.1 | Up | 05:34:01 - 05:42:56 | 3261 |
| Idyllwild | 05:38:38 | -53.9 | Dark | Up | 67.6 | 71.3 | Up | 05:34:10 - 05:43:05 | 3239 |
| George/Scottsdale | 05:38:19 | -57.6 | Dark | Up | 71.3 | 70.5 | Up | 05:33:52 - 05:42:47 | 3198 |
| Calipatria | 05:38:34 | -55.0 | Dark | Up | 68.3 | 69.8 | Up | 05:34:06 - 05:43:01 | 3160 |
| Yuma | 05:38:30 | -55.8 | Dark | Up | 68.8 | 68.5 | Up | 05:34:03 - 05:42:58 | 3105 |
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 05UN524, (2023/02/03 05:37UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 14.15 7 PPM 073799 08:32:54.8 +38:00:55 5.9 0.15 20 PPM 073770 08:31:20.0 +37:15:52 6.0 0.82 19 PPM 073799 08:32:54.8 +38:00:55 5.9 0.15 20 05UN524 08:33:35.6 +37:56:51 16.5 20 Positions are for J2000
Event circumstances last updated at 2022/03/12 01:52:38 UT
Marc W. Buie, Southwest Research Institute