Event between (202421) 05UQ513 and star GA1240:00208290 with event index number of 2177373
Geocentric closest approach at 2023/12/25 05:34:58 UTC
J2000 position of star is 01:06:18.7 +35:06:33
Equinox of date position of star is 01:07:35.2 +35:13:52
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 46 degrees from the moon.
Moon is 96% illuminated.
TNO apparent brightness V=20.8
[RECON map]
TNO is 47.6 AU from the Sun
and 47.2 AU from the Earth.
The TNO is moving 14.9
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 118 seconds.
The 1-sigma cross-track error in the shadow position is
1842 km.
The sky-plane scale is
34223.1 km/arcsec.
The TNO has an absolute magnitude Hv=3.9
Diameter=972.8 km assuming a 5% albedo -- 66.6 sec chord
Diameter=397.1 km assuming a 30% albedo -- 27.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 202421, (2023/12/25 05:35UT) Object RA Dec mag sep mel Aldebaran 04:37:18.0 +16:33:20 0.8 50.06 9 57Gam1And 02:05:22.9 +42:26:37 2.3 13.33 36 PPM 066072 01:14:36.9 +34:13:30 6.5 1.75 45 PPM 065966 01:08:07.9 +35:16:24 7.7 0.10 46 202421 01:07:39.0 +35:14:13 16.1 46 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 25.7 km
RECON observability=1.0 and success probability=8.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 05:31:56 | -50.3 | Dark | Up | 57.7 | 256.6 | Up | 05:21:38 - 05:42:15 | 4786 |
| Victoria | 05:32:16 | -49.6 | Dark | Up | 60.0 | 257.1 | Up | 05:21:58 - 05:42:35 | 4773 |
| Peachland | 05:31:59 | -51.1 | Dark | Up | 57.5 | 258.7 | Up | 05:21:40 - 05:42:17 | 4687 |
| Kelowna | 05:31:58 | -51.2 | Dark | Up | 57.3 | 258.8 | Up | 05:21:39 - 05:42:16 | 4682 |
| Summerland | 05:31:59 | -51.2 | Dark | Up | 57.4 | 259.0 | Up | 05:21:41 - 05:42:18 | 4671 |
| Penticton | 05:32:00 | -51.3 | Dark | Up | 57.4 | 259.2 | Up | 05:21:41 - 05:42:18 | 4661 |
| Oliver | 05:32:02 | -51.5 | Dark | Up | 57.4 | 259.7 | Up | 05:21:43 - 05:42:20 | 4633 |
| Anarchist Mountain Observatory | 05:32:01 | -51.7 | Dark | Up | 57.3 | 260.2 | Up | 05:21:43 - 05:42:20 | 4611 |
| Okanogan | 05:32:06 | -51.9 | Dark | Up | 57.6 | 261.0 | Up | 05:21:47 - 05:42:24 | 4572 |
| Manson/Chelan | 05:32:11 | -51.8 | Dark | Up | 58.0 | 261.2 | Up | 05:21:52 - 05:42:29 | 4563 |
| Brewster | 05:32:08 | -51.9 | Dark | Up | 57.7 | 261.2 | Up | 05:21:49 - 05:42:26 | 4561 |
| Wenatchee | 05:32:13 | -51.9 | Dark | Up | 58.2 | 261.9 | Up | 05:21:55 - 05:42:32 | 4535 |
| Ellensburg | 05:32:17 | -52.0 | Dark | Up | 58.4 | 262.3 | Up | 05:21:58 - 05:42:35 | 4515 |
| Yakima | 05:32:18 | -52.1 | Dark | Up | 58.4 | 263.0 | Up | 05:21:59 - 05:42:36 | 4485 |
| Toppenish/White Swan | 05:32:19 | -52.3 | Dark | Up | 58.4 | 263.5 | Up | 05:22:00 - 05:42:37 | 4461 |
| The Dalles | 05:32:25 | -52.1 | Dark | Up | 59.0 | 264.1 | Up | 05:22:07 - 05:42:44 | 4443 |
| Maupin | 05:32:28 | -52.4 | Dark | Up | 58.9 | 264.9 | Up | 05:22:09 - 05:42:46 | 4407 |
| Sisters | 05:32:34 | -52.4 | Dark | Up | 59.3 | 266.0 | Up | 05:22:16 - 05:42:53 | 4369 |
| PNWRO | 05:32:17 | -53.4 | Dark | Up | 57.4 | 265.3 | Up | 05:21:59 - 05:42:36 | 4358 |
| Sleaford | 05:31:09 | -56.3 | Dark | Up | 48.7 | 267.6 | Up | 05:20:50 - 05:41:27 | 4342 |
| Bend | 05:32:35 | -52.7 | Dark | Up | 59.2 | 266.6 | Up | 05:22:16 - 05:42:53 | 4337 |
| Oregon Observatory | 05:32:36 | -52.6 | Dark | Up | 59.3 | 266.8 | Up | 05:22:18 - 05:42:55 | 4332 |
| Chiloquin | 05:32:45 | -52.8 | Dark | Up | 59.6 | 268.7 | Up | 05:22:26 - 05:43:03 | 4260 |
| Klamath Falls | 05:32:47 | -53.0 | Dark | Up | 59.5 | 269.4 | Up | 05:22:28 - 05:43:05 | 4231 |
| Fall River/Burney | 05:32:52 | -53.6 | Dark | Up | 59.2 | 271.6 | Up | 05:22:33 - 05:43:10 | 4127 |
| Cedarville | 05:32:46 | -54.3 | Dark | Up | 58.3 | 271.6 | Up | 05:22:27 - 05:43:04 | 4094 |
| Greenville | 05:32:56 | -54.2 | Dark | Up | 58.8 | 273.4 | Up | 05:22:38 - 05:43:15 | 4039 |
| Gimple | 05:32:56 | -54.3 | Dark | Up | 58.8 | 273.5 | Up | 05:22:37 - 05:43:14 | 4034 |
| Quincy | 05:32:57 | -54.3 | Dark | Up | 58.8 | 273.8 | Up | 05:22:39 - 05:43:16 | 4024 |
| Portola | 05:32:57 | -54.7 | Dark | Up | 58.4 | 274.2 | Up | 05:22:39 - 05:43:16 | 3988 |
| Reno | 05:32:56 | -55.2 | Dark | Up | 57.9 | 275.0 | Up | 05:22:37 - 05:43:14 | 3934 |
| Carson City | 05:32:58 | -55.4 | Dark | Up | 57.8 | 275.6 | Up | 05:22:39 - 05:43:16 | 3907 |
| Gardnerville | 05:32:59 | -55.5 | Dark | Up | 57.8 | 276.0 | Up | 05:22:41 - 05:43:18 | 3888 |
| Yerington | 05:32:58 | -55.9 | Dark | Up | 57.3 | 276.2 | Up | 05:22:39 - 05:43:16 | 3859 |
| Hawthorne | 05:32:58 | -56.4 | Dark | Up | 56.9 | 277.2 | Up | 05:22:40 - 05:43:17 | 3797 |
| Lee Vining | 05:33:02 | -56.2 | Dark | Up | 57.2 | 277.8 | Up | 05:22:44 - 05:43:21 | 3784 |
| Bishop | 05:33:04 | -56.9 | Dark | Up | 56.5 | 279.1 | Up | 05:22:45 - 05:43:22 | 3703 |
| Beatty | 05:33:00 | -58.3 | Dark | Up | 55.2 | 280.4 | Up | 05:22:42 - 05:43:19 | 3581 |
| Wildwood | 05:33:23 | -57.5 | Dark | Up | 56.0 | 283.8 | Up | 05:23:05 - 05:43:42 | 3492 |
| Idyllwild | 05:33:19 | -59.1 | Dark | Up | 54.4 | 284.8 | Up | 05:23:00 - 05:43:37 | 3361 |
| Laughlin/Bullhead City | 05:33:03 | -60.5 | Dark | Up | 53.1 | 283.5 | Up | 05:22:45 - 05:43:22 | 3344 |
| Patrick | 05:32:59 | -61.0 | Dark | Up | 52.6 | 283.4 | Up | 05:22:41 - 05:43:18 | 3324 |
| Dunrhomin | 05:32:02 | -64.9 | Dark | Up | 47.1 | 281.3 | Up | 05:21:43 - 05:42:20 | 3303 |
| CU-SBO | 05:32:04 | -65.0 | Dark | Up | 47.1 | 281.5 | Up | 05:21:46 - 05:42:23 | 3287 |
| Lake Havasu City | 05:33:05 | -60.9 | Dark | Up | 52.7 | 284.5 | Up | 05:22:47 - 05:43:24 | 3284 |
| Calipatria | 05:33:18 | -60.2 | Dark | Up | 53.2 | 285.9 | Up | 05:23:00 - 05:43:37 | 3255 |
| Yuma | 05:33:17 | -61.0 | Dark | Up | 52.4 | 286.7 | Up | 05:22:59 - 05:43:36 | 3178 |
| George/Scottsdale | 05:33:01 | -63.0 | Dark | Up | 50.5 | 286.1 | Up | 05:22:43 - 05:43:20 | 3104 |
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 202421, (2023/12/25 05:35UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 50.06 9 57Gam1And 02:03:54.0 +42:19:46 2.3 13.33 36 PPM 066072 01:13:16.2 +34:05:54 6.5 1.75 45 PPM 065966 01:06:47.5 +35:08:44 7.7 0.10 46 202421 01:06:18.7 +35:06:33 16.1 46 Positions are for J2000
Event circumstances last updated at 2022/11/13 03:39:15 UT
Marc W. Buie, Southwest Research Institute