Event between (531015) 12BX154 and star GA0900:03773879 with event index number of 2439480
Geocentric closest approach at 2024/02/28 08:51:00 UTC
J2000 position of star is 11:31:09.6 +00:47:39
Equinox of date position of star is 11:32:18.3 +00:40:14
Stellar brightness G=13.9,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 28 degrees from the moon.
Moon is 87% illuminated.
TNO apparent brightness V=23.0
[RECON map]
TNO is 45.3 AU from the Sun
and 44.3 AU from the Earth.
The TNO is moving 24.3
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 235 seconds.
The 1-sigma cross-track error in the shadow position is
4555 km.
The sky-plane scale is
32146.8 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 13.2 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATNEAR
Star training set for 531015, (2024/02/28 09:01UT) Object RA Dec mag sep mel Regulus 10:09:39.4 +11:50:53 1.3 23.38 51 Denebola 11:50:17.5 +14:26:13 2.1 14.47 32 79 Leo 11:25:16.8 +01:16:29 6.4 1.88 30 PPM 157955 11:33:50.7 +01:12:22 8.4 0.65 28 PPM 157948 11:33:26.1 +00:35:13 9.7 0.27 28 531015 11:32:23.9 +00:39:38 13.9 28 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
3.8 sigma about the mid-time.
The median site spacing is 17.6 km
RECON observability=1.0 and success probability=10.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 08:51:42 | -41.9 | Dark | Up | 37.7 | 195.1 | Up | 08:36:42 - 09:06:42 | 713 |
| Kamloops | 08:52:18 | -46.7 | Dark | Up | 40.1 | 176.9 | Up | 08:37:18 - 09:07:18 | 275 |
| Kelowna | 08:52:15 | -47.3 | Dark | Up | 40.9 | 178.0 | Up | 08:37:15 - 09:07:15 | 241 |
| Peachland | 08:52:15 | -47.5 | Dark | Up | 41.0 | 177.6 | Up | 08:37:15 - 09:07:15 | 226 |
| Summerland | 08:52:15 | -47.6 | Dark | Up | 41.2 | 177.7 | Up | 08:37:15 - 09:07:15 | 218 |
| Penticton | 08:52:15 | -47.7 | Dark | Up | 41.2 | 177.9 | Up | 08:37:15 - 09:07:15 | 216 |
| Oliver | 08:52:14 | -48.0 | Dark | Up | 41.6 | 177.9 | Up | 08:37:14 - 09:07:14 | 191 |
| Anarchist Mountain Observatory | 08:52:14 | -48.1 | Dark | Up | 41.8 | 178.1 | Up | 08:37:14 - 09:07:14 | 185 |
| Tonasket | 08:52:14 | -48.5 | Dark | Up | 42.1 | 178.0 | Up | 08:37:14 - 09:07:14 | 161 |
| Okanogan | 08:52:14 | -48.8 | Dark | Up | 42.4 | 177.8 | Up | 08:37:14 - 09:07:14 | 133 |
| Brewster | 08:52:14 | -49.1 | Dark | Up | 42.7 | 177.5 | Up | 08:37:14 - 09:07:14 | 108 |
| Manson/Chelan | 08:52:15 | -49.4 | Dark | Up | 42.9 | 177.0 | Up | 08:37:15 - 09:07:15 | 84 |
| Victoria | 08:52:25 | -49.2 | Dark | Up | 42.0 | 172.7 | Up | 08:37:25 - 09:07:25 | 46 |
| Wenatchee | 08:52:15 | -49.9 | Dark | Up | 43.3 | 176.7 | Up | 08:37:15 - 09:07:15 | 45 |
| Ellensburg | 08:52:15 | -50.3 | Dark | Up | 43.7 | 176.4 | Up | 08:37:15 - 09:07:15 | 9 |
| PNWRO | 08:52:09 | -50.9 | Dark | Up | 44.8 | 178.6 | Up | 08:37:09 - 09:07:09 | -20 |
| Yakima | 08:52:15 | -50.7 | Dark | Up | 44.1 | 176.4 | Up | 08:37:15 - 09:07:15 | -22 |
| Toppenish/White Swan | 08:52:14 | -50.9 | Dark | Up | 44.4 | 176.6 | Up | 08:37:14 - 09:07:14 | -33 |
| Dunrhomin | 08:51:19 | -51.1 | Dark | Up | 48.9 | 199.3 | Up | 08:36:19 - 09:06:19 | -60 |
| CU-SBO | 08:51:19 | -51.4 | Dark | Up | 49.2 | 199.3 | Up | 08:36:19 - 09:06:19 | -82 |
| Goldendale | 08:52:15 | -51.5 | Dark | Up | 44.9 | 176.0 | Up | 08:37:15 - 09:07:15 | -85 |
| The Dalles | 08:52:16 | -51.8 | Dark | Up | 45.1 | 175.4 | Up | 08:37:16 - 09:07:16 | -112 |
| Maupin | 08:52:15 | -52.1 | Dark | Up | 45.5 | 175.5 | Up | 08:37:15 - 09:07:15 | -141 |
| Sisters | 08:52:16 | -53.1 | Dark | Up | 46.4 | 174.8 | Up | 08:37:16 - 09:07:16 | -222 |
| Bend | 08:52:15 | -53.3 | Dark | Up | 46.6 | 175.1 | Up | 08:37:15 - 09:07:15 | -233 |
| Oregon Observatory | 08:52:15 | -53.5 | Dark | Up | 46.8 | 174.9 | Up | 08:37:15 - 09:07:15 | -250 |
| North Lake | 08:52:13 | -54.0 | Dark | Up | 47.5 | 175.6 | Up | 08:37:13 - 09:07:13 | -284 |
| Lakeview | 08:52:10 | -54.9 | Dark | Up | 48.6 | 176.4 | Up | 08:37:10 - 09:07:10 | -352 |
| Chiloquin | 08:52:15 | -54.8 | Dark | Up | 48.1 | 174.1 | Up | 08:37:15 - 09:07:15 | -365 |
| Klamath Falls | 08:52:15 | -55.1 | Dark | Up | 48.4 | 174.2 | Up | 08:37:15 - 09:07:15 | -390 |
| Cedarville | 08:52:09 | -55.5 | Dark | Up | 49.2 | 176.6 | Up | 08:37:09 - 09:07:09 | -399 |
| Fall River/Burney | 08:52:12 | -56.2 | Dark | Up | 49.6 | 174.7 | Up | 08:37:12 - 09:07:12 | -474 |
| Susanville | 08:52:09 | -56.7 | Dark | Up | 50.3 | 175.7 | Up | 08:37:09 - 09:07:09 | -503 |
| Gimple | 08:52:09 | -57.0 | Dark | Up | 50.6 | 175.4 | Up | 08:37:09 - 09:07:09 | -532 |
| Greenville | 08:52:10 | -57.0 | Dark | Up | 50.6 | 175.3 | Up | 08:37:10 - 09:07:10 | -535 |
| Portola | 08:52:08 | -57.2 | Dark | Up | 50.9 | 176.0 | Up | 08:37:08 - 09:07:08 | -547 |
| Reno | 08:52:05 | -57.3 | Dark | Up | 51.2 | 177.0 | Up | 08:37:05 - 09:07:05 | -550 |
| Quincy | 08:52:09 | -57.2 | Dark | Up | 50.8 | 175.2 | Up | 08:37:09 - 09:07:09 | -551 |
| Yerington | 08:52:03 | -57.6 | Dark | Up | 51.8 | 178.0 | Up | 08:37:03 - 09:07:03 | -575 |
| Carson City | 08:52:05 | -57.6 | Dark | Up | 51.6 | 177.0 | Up | 08:37:05 - 09:07:05 | -578 |
| Tonopah | 08:51:55 | -57.9 | Dark | Up | 52.7 | 181.1 | Up | 08:36:55 - 09:06:55 | -593 |
| Gardnerville | 08:52:04 | -57.8 | Dark | Up | 51.8 | 177.0 | Up | 08:37:04 - 09:07:04 | -597 |
| Hawthorne | 08:52:00 | -57.9 | Dark | Up | 52.3 | 178.8 | Up | 08:37:00 - 09:07:00 | -598 |
| Lee Vining | 08:52:01 | -58.6 | Dark | Up | 52.8 | 178.0 | Up | 08:37:01 - 09:07:01 | -659 |
| Indian Springs | 08:51:48 | -58.8 | Dark | Up | 54.2 | 183.7 | Up | 08:36:48 - 09:06:48 | -670 |
| Beatty | 08:51:52 | -58.9 | Dark | Up | 53.9 | 181.9 | Up | 08:36:52 - 09:06:52 | -676 |
| Bishop | 08:51:58 | -59.0 | Dark | Up | 53.4 | 179.1 | Up | 08:36:58 - 09:06:58 | -687 |
| Henderson | 08:51:45 | -59.0 | Dark | Up | 54.7 | 184.9 | Up | 08:36:45 - 09:06:45 | -693 |
| Patrick | 08:51:40 | -59.1 | Dark | Up | 55.2 | 186.9 | Up | 08:36:40 - 09:06:40 | -711 |
| Kingman/Dolan Springs | 08:51:41 | -59.3 | Dark | Up | 55.4 | 186.6 | Up | 08:36:41 - 09:06:41 | -735 |
| Laughlin/Bullhead City | 08:51:42 | -59.6 | Dark | Up | 55.5 | 185.7 | Up | 08:36:42 - 09:06:42 | -754 |
| Mohave Valley | 08:51:42 | -59.8 | Dark | Up | 55.8 | 185.8 | Up | 08:36:42 - 09:06:42 | -777 |
| George/Scottsdale | 08:51:30 | -59.5 | Dark | Up | 56.6 | 190.8 | Up | 08:36:30 - 09:06:30 | -790 |
| Lake Havasu City | 08:51:40 | -60.0 | Dark | Up | 56.1 | 186.3 | Up | 08:36:40 - 09:06:40 | -803 |
| Parker | 08:51:40 | -60.3 | Dark | Up | 56.5 | 186.4 | Up | 08:36:40 - 09:06:40 | -832 |
| Idyllwild | 08:51:48 | -61.7 | Dark | Up | 57.0 | 182.1 | Up | 08:36:48 - 09:06:48 | -944 |
| Calipatria | 08:51:42 | -61.7 | Dark | Up | 57.6 | 184.3 | Up | 08:36:42 - 09:06:42 | -960 |
| Yuma | 08:51:39 | -61.7 | Dark | Up | 58.0 | 186.0 | Up | 08:36:39 - 09:06:39 | -968 |
| Wildwood | 08:51:54 | -62.0 | Dark | Up | 56.7 | 178.7 | Up | 08:36:54 - 09:06:54 | -974 |
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 531015, (2024/02/28 09:01UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 23.38 51 Denebola 11:49:02.8 +14:34:17 2.1 14.47 32 79 Leo 11:24:02.3 +01:24:28 6.4 1.88 30 PPM 157955 11:32:36.3 +01:20:23 8.4 0.65 28 PPM 157948 11:32:11.8 +00:43:13 9.7 0.27 28 531015 11:31:09.6 +00:47:39 13.9 28 Positions are for J2000
Event circumstances last updated at 2022/05/03 02:02:02 UT
Marc W. Buie, Southwest Research Institute