Event between (281371) 08FC76 and star GA0820:03610952 with event index number of 2458001
Geocentric closest approach at 2024/12/04 09:43:34 UTC
J2000 position of star is 08:33:18.3 -07:36:03
Equinox of date position of star is 08:34:29.6 -07:41:06
Stellar brightness G=15.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon.
Moon is 10% illuminated.
Apparent brightness V=21.3
[RECON map]
Object is 14.4 AU from the Sun
and 13.9 AU from the Earth.
Apparent velocity is 14.8
km/sec on the sky relative to the star, or,
5.3 arcsec/hr.
The 1-sigma error in the time of the event is 50 seconds.
The 1-sigma cross-track error in the shadow position is
692 km.
The sky-plane scale is
10104.9 km/arcsec.
The object has an absolute magnitude Hv=9.5
Diameter=83.2 km assuming a 5% albedo -- 5.2 sec chord
Diameter=34.0 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 281371, (2024/12/04 09:43UT) Object RA Dec mag sep mel Sirius 06:46:14.8 -16:45:06 -1.5 27.93 135 Alphard 09:28:48.7 -08:46:04 2.0 13.48 134 3 Hya 08:36:41.2 -08:04:10 6.2 0.66 142 PPM 191455 08:34:35.5 -08:00:01 8.3 0.31 142 PPM 191452 08:34:28.1 -07:50:03 9.4 0.15 142 281371 08:34:31.4 -07:41:14 15.2 142 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 11.7 km
RECON observability=1.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 09:41:38 | -57.4 | Dark | Down | 27.0 | 143.1 | Low | 09:37:00 - 09:46:16 | 4129 |
| Kamloops | 09:41:16 | -54.5 | Dark | Down | 26.3 | 146.8 | Low | 09:36:38 - 09:45:54 | 4052 |
| Peachland | 09:41:18 | -54.9 | Dark | Down | 27.3 | 147.2 | Low | 09:36:40 - 09:45:56 | 4014 |
| Summerland | 09:41:19 | -54.9 | Dark | Down | 27.5 | 147.2 | Low | 09:36:41 - 09:45:57 | 4007 |
| Kelowna | 09:41:16 | -54.6 | Dark | Down | 27.3 | 147.5 | Low | 09:36:38 - 09:45:54 | 4004 |
| Penticton | 09:41:19 | -54.9 | Dark | Down | 27.6 | 147.3 | Low | 09:36:41 - 09:45:57 | 4002 |
| Oliver | 09:41:21 | -55.1 | Dark | Down | 27.9 | 147.2 | Low | 09:36:43 - 09:45:59 | 3995 |
| Manson/Chelan | 09:41:29 | -56.2 | Dark | Down | 28.7 | 146.3 | Low | 09:36:51 - 09:46:07 | 3992 |
| Wenatchee | 09:41:32 | -56.6 | Dark | Down | 29.1 | 146.0 | Low | 09:36:54 - 09:46:10 | 3989 |
| Ellensburg | 09:41:35 | -57.0 | Dark | Down | 29.3 | 145.6 | Low | 09:36:57 - 09:46:13 | 3989 |
| Anarchist Mountain Observatory | 09:41:21 | -55.1 | Dark | Down | 28.1 | 147.4 | Low | 09:36:43 - 09:45:59 | 3985 |
| Brewster | 09:41:27 | -55.9 | Dark | Down | 28.7 | 146.7 | Low | 09:36:49 - 09:46:05 | 3982 |
| The Dalles | 09:41:45 | -58.2 | Dark | Down | 30.3 | 144.5 | Up | 09:37:07 - 09:46:23 | 3982 |
| Yakima | 09:41:38 | -57.3 | Dark | Down | 29.7 | 145.5 | Low | 09:37:00 - 09:46:16 | 3980 |
| Okanogan | 09:41:25 | -55.7 | Dark | Down | 28.5 | 147.0 | Low | 09:36:47 - 09:46:03 | 3980 |
| Toppenish/White Swan | 09:41:38 | -57.3 | Dark | Down | 29.9 | 145.6 | Low | 09:37:00 - 09:46:16 | 3968 |
| Maupin | 09:41:46 | -58.4 | Dark | Down | 30.6 | 144.5 | Up | 09:37:08 - 09:46:24 | 3967 |
| Sisters | 09:41:53 | -59.2 | Dark | Down | 31.2 | 143.7 | Up | 09:37:15 - 09:46:31 | 3966 |
| Oregon Observatory | 09:41:55 | -59.3 | Dark | Down | 31.6 | 143.7 | Up | 09:37:17 - 09:46:33 | 3950 |
| Bend | 09:41:52 | -59.2 | Dark | Down | 31.5 | 143.9 | Up | 09:37:14 - 09:46:30 | 3949 |
| Chiloquin | 09:42:03 | -60.3 | Dark | Down | 32.4 | 142.8 | Up | 09:37:25 - 09:46:41 | 3931 |
| Klamath Falls | 09:42:05 | -60.5 | Dark | Down | 32.8 | 142.8 | Up | 09:37:27 - 09:46:43 | 3918 |
| PNWRO | 09:41:34 | -56.7 | Dark | Down | 30.8 | 147.0 | Up | 09:36:56 - 09:46:12 | 3898 |
| Fall River/Burney | 09:42:09 | -60.9 | Dark | Down | 33.9 | 142.7 | Up | 09:37:31 - 09:46:47 | 3865 |
| Cedarville | 09:42:02 | -59.8 | Dark | Down | 34.0 | 144.2 | Up | 09:37:24 - 09:46:40 | 3827 |
| Greenville | 09:42:12 | -61.0 | Dark | Down | 34.8 | 142.8 | Up | 09:37:34 - 09:46:50 | 3817 |
| Gimple | 09:42:12 | -61.0 | Dark | Down | 34.8 | 142.9 | Up | 09:37:34 - 09:46:50 | 3813 |
| Quincy | 09:42:13 | -61.1 | Dark | Down | 35.0 | 142.8 | Up | 09:37:35 - 09:46:51 | 3810 |
| Portola | 09:42:12 | -60.9 | Dark | Down | 35.3 | 143.2 | Up | 09:37:34 - 09:46:50 | 3785 |
| Reno | 09:42:11 | -60.6 | Dark | Down | 35.8 | 143.8 | Up | 09:37:33 - 09:46:49 | 3746 |
| Carson City | 09:42:12 | -60.7 | Dark | Down | 36.1 | 143.7 | Up | 09:37:34 - 09:46:50 | 3733 |
| Gardnerville | 09:42:14 | -60.8 | Dark | Down | 36.3 | 143.6 | Up | 09:37:36 - 09:46:52 | 3722 |
| Yerington | 09:42:11 | -60.3 | Dark | Down | 36.5 | 144.3 | Up | 09:37:33 - 09:46:49 | 3696 |
| Lee Vining | 09:42:16 | -60.7 | Dark | Down | 37.4 | 143.9 | Up | 09:37:38 - 09:46:54 | 3657 |
| Hawthorne | 09:42:11 | -60.2 | Dark | Down | 37.2 | 144.7 | Up | 09:37:33 - 09:46:49 | 3655 |
| Bishop | 09:42:16 | -60.4 | Dark | Down | 38.2 | 144.4 | Up | 09:37:38 - 09:46:54 | 3599 |
| Sleaford | 09:40:23 | -46.5 | Dark | Down | 28.9 | 162.4 | Low | 09:35:45 - 09:45:01 | 3509 |
| Beatty | 09:42:11 | -59.4 | Dark | Down | 39.3 | 146.0 | Up | 09:37:33 - 09:46:49 | 3502 |
| Wildwood | 09:42:33 | -61.6 | Dark | Down | 40.8 | 142.7 | Up | 09:37:55 - 09:47:11 | 3474 |
| Idyllwild | 09:42:27 | -60.2 | Dark | Down | 42.0 | 144.6 | Up | 09:37:49 - 09:47:05 | 3364 |
| Laughlin/Bullhead City | 09:42:11 | -58.2 | Dark | Down | 41.8 | 147.8 | Up | 09:37:33 - 09:46:49 | 3318 |
| Patrick | 09:42:06 | -57.6 | Dark | Down | 41.8 | 148.7 | Up | 09:37:28 - 09:46:44 | 3293 |
| Lake Havasu City | 09:42:12 | -58.2 | Dark | Down | 42.4 | 147.8 | Up | 09:37:34 - 09:46:50 | 3274 |
| Calipatria | 09:42:25 | -59.4 | Dark | Down | 43.1 | 145.7 | Up | 09:37:47 - 09:47:03 | 3274 |
| Yuma | 09:42:23 | -58.8 | Dark | Down | 43.8 | 146.5 | Up | 09:37:45 - 09:47:01 | 3206 |
| George/Scottsdale | 09:42:05 | -56.4 | Dark | Down | 44.2 | 150.4 | Up | 09:37:27 - 09:46:43 | 3108 |
| Dunrhomin | 09:41:06 | -50.0 | Dark | Down | 40.3 | 161.0 | Up | 09:36:28 - 09:45:44 | 3055 |
| CU-SBO | 09:41:08 | -50.1 | Dark | Down | 40.5 | 160.8 | Up | 09:36:30 - 09:45:46 | 3049 |
| Nikitin | 09:41:08 | -50.0 | Dark | Down | 40.5 | 160.9 | Up | 09:36:30 - 09:45:46 | 3048 |
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 281371, (2024/12/04 09:43UT) Object RA Dec mag sep mel Sirius 06:45:07.9 -16:43:27 -1.5 27.93 135 Alphard 09:27:35.2 -08:39:30 2.0 13.48 134 3 Hya 08:35:28.2 -07:58:56 6.2 0.66 142 PPM 191455 08:33:22.5 -07:54:51 8.3 0.31 142 PPM 191452 08:33:15.1 -07:44:52 9.4 0.15 142 281371 08:33:18.3 -07:36:03 15.2 142 Positions are for J2000
Event circumstances last updated at 2024/04/21 03:15:35 UT
Marc W. Buie, Southwest Research Institute