Event between (8405) Asbolus and star GA1300:03050037 with event index number of 1242377
Geocentric closest approach at 2023/01/20 11:49:06 UTC
J2000 position of star is 05:42:52.5 +41:26:53
Equinox of date position of star is 05:44:30.4 +41:27:26
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon.
Moon is 3% illuminated.
Apparent brightness V=23.2
[RECON map]
Object is 24.5 AU from the Sun
and 23.7 AU from the Earth.
Apparent velocity is 21.9
km/sec on the sky relative to the star, or,
4.6 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
1062 km.
The sky-plane scale is
17189.3 km/arcsec.
The object has an absolute magnitude Hv=9.2
Diameter=91.2 km assuming a 5% albedo -- 4.0 sec chord
Diameter=37.2 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
Star training set for 8405, (2023/01/20 11:49UT) Object RA Dec mag sep mel Pollux 07:46:43.5 +27:58:07 1.1 28.30 167 34Bet Aur 06:01:13.2 +44:56:50 1.9 4.63 160 PPM 048445 05:48:53.8 +42:31:59 6.3 1.35 161 PPM 048383 05:44:52.2 +41:42:17 7.3 0.26 161 PPM 048390 05:45:09.5 +41:28:03 10.2 0.12 161 8405 05:44:30.5 +41:27:26 16.1 161 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 19.2 km
RECON observability=0.8 and success probability=31.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 11:45:26 | -29.4 | Dark | Down | 24.1 | 307.3 | Low | 11:35:04 - 11:55:48 | 2490 |
| Dunrhomin | 11:44:51 | -29.1 | Dark | Down | 16.3 | 311.0 | Really Low | 11:34:29 - 11:55:13 | 1780 |
| Nikitin | 11:44:51 | -29.1 | Dark | Down | 16.2 | 311.0 | Really Low | 11:34:29 - 11:55:13 | 1766 |
| CU-SBO | 11:44:50 | -29.2 | Dark | Down | 16.2 | 311.0 | Really Low | 11:34:28 - 11:55:12 | 1757 |
| Kamloops | 11:45:24 | -38.5 | Dark | Down | 30.9 | 299.2 | Up | 11:35:02 - 11:55:46 | 1729 |
| Kelowna | 11:45:20 | -38.1 | Dark | Down | 30.0 | 300.1 | Low | 11:34:58 - 11:55:42 | 1710 |
| Peachland | 11:45:20 | -38.3 | Dark | Down | 30.1 | 300.0 | Up | 11:34:58 - 11:55:42 | 1688 |
| Penticton | 11:45:19 | -38.3 | Dark | Down | 29.9 | 300.2 | Low | 11:34:57 - 11:55:41 | 1682 |
| Summerland | 11:45:20 | -38.3 | Dark | Down | 30.0 | 300.1 | Low | 11:34:58 - 11:55:42 | 1682 |
| Oliver | 11:45:18 | -38.4 | Dark | Down | 29.7 | 300.4 | Low | 11:34:56 - 11:55:40 | 1656 |
| Anarchist Mountain Observatory | 11:45:18 | -38.3 | Dark | Down | 29.5 | 300.6 | Low | 11:34:56 - 11:55:40 | 1652 |
| Okanogan | 11:45:16 | -38.6 | Dark | Down | 29.3 | 300.7 | Low | 11:34:54 - 11:55:38 | 1593 |
| Brewster | 11:45:15 | -38.8 | Dark | Down | 29.3 | 300.8 | Low | 11:34:53 - 11:55:37 | 1563 |
| Manson/Chelan | 11:45:15 | -39.1 | Dark | Down | 29.4 | 300.7 | Low | 11:34:53 - 11:55:37 | 1530 |
| Wenatchee | 11:45:14 | -39.3 | Dark | Down | 29.2 | 300.8 | Low | 11:34:52 - 11:55:36 | 1486 |
| PNWRO | 11:45:09 | -38.7 | Dark | Down | 27.7 | 302.2 | Low | 11:34:47 - 11:55:31 | 1449 |
| Ellensburg | 11:45:12 | -39.5 | Dark | Down | 29.2 | 300.9 | Low | 11:34:50 - 11:55:34 | 1443 |
| Victoria | 11:45:19 | -41.0 | Dark | Down | 31.6 | 298.5 | Up | 11:34:57 - 11:55:41 | 1426 |
| Yakima | 11:45:11 | -39.7 | Dark | Down | 29.0 | 301.0 | Low | 11:34:49 - 11:55:33 | 1411 |
| Toppenish/White Swan | 11:45:10 | -39.6 | Dark | Down | 28.8 | 301.2 | Low | 11:34:48 - 11:55:32 | 1403 |
| The Dalles | 11:45:09 | -40.3 | Dark | Down | 28.8 | 301.2 | Low | 11:34:47 - 11:55:31 | 1303 |
| Maupin | 11:45:08 | -40.3 | Dark | Down | 28.6 | 301.4 | Low | 11:34:46 - 11:55:30 | 1276 |
| Sisters | 11:45:06 | -40.9 | Dark | Down | 28.4 | 301.6 | Low | 11:34:44 - 11:55:28 | 1182 |
| Bend | 11:45:05 | -40.7 | Dark | Down | 28.1 | 301.8 | Low | 11:34:43 - 11:55:27 | 1176 |
| Oregon Observatory | 11:45:04 | -40.9 | Dark | Down | 28.1 | 301.8 | Low | 11:34:42 - 11:55:26 | 1156 |
| Cedarville | 11:44:58 | -40.4 | Dark | Down | 26.1 | 303.4 | Low | 11:34:36 - 11:55:20 | 1034 |
| Chiloquin | 11:45:02 | -41.4 | Dark | Down | 27.7 | 302.2 | Low | 11:34:40 - 11:55:24 | 1029 |
| Klamath Falls | 11:45:00 | -41.4 | Dark | Down | 27.4 | 302.4 | Low | 11:34:38 - 11:55:22 | 1005 |
| Fall River/Burney | 11:44:57 | -41.4 | Dark | Down | 26.6 | 303.1 | Low | 11:34:35 - 11:55:19 | 930 |
| Patrick | 11:44:40 | -35.9 | Dark | Down | 18.5 | 308.2 | Really Low | 11:34:18 - 11:55:02 | 909 |
| George/Scottsdale | 11:44:36 | -34.2 | Dark | Down | 16.2 | 309.4 | Really Low | 11:34:14 - 11:54:58 | 900 |
| Reno | 11:44:52 | -40.4 | Dark | Down | 24.7 | 304.4 | Low | 11:34:30 - 11:55:14 | 894 |
| Yerington | 11:44:50 | -39.9 | Dark | Down | 24.0 | 304.9 | Low | 11:34:28 - 11:55:12 | 886 |
| Gimple | 11:44:55 | -41.1 | Dark | Down | 25.7 | 303.7 | Low | 11:34:33 - 11:55:17 | 885 |
| Greenville | 11:44:55 | -41.2 | Dark | Down | 25.8 | 303.7 | Low | 11:34:33 - 11:55:17 | 880 |
| Portola | 11:44:54 | -40.8 | Dark | Down | 25.3 | 304.0 | Low | 11:34:32 - 11:55:16 | 880 |
| Hawthorne | 11:44:49 | -39.6 | Dark | Down | 23.4 | 305.3 | Low | 11:34:27 - 11:55:11 | 878 |
| Carson City | 11:44:51 | -40.4 | Dark | Down | 24.5 | 304.5 | Low | 11:34:29 - 11:55:13 | 866 |
| Quincy | 11:44:54 | -41.2 | Dark | Down | 25.7 | 303.7 | Low | 11:34:32 - 11:55:16 | 864 |
| Beatty | 11:44:45 | -38.2 | Dark | Down | 21.3 | 306.6 | Low | 11:34:23 - 11:55:07 | 855 |
| Gardnerville | 11:44:51 | -40.4 | Dark | Down | 24.4 | 304.6 | Low | 11:34:29 - 11:55:13 | 849 |
| Laughlin/Bullhead City | 11:44:40 | -36.5 | Dark | Down | 18.8 | 308.0 | Really Low | 11:34:18 - 11:55:02 | 847 |
| Lake Havasu City | 11:44:39 | -36.3 | Dark | Down | 18.3 | 308.2 | Really Low | 11:34:17 - 11:55:01 | 809 |
| Lee Vining | 11:44:48 | -40.0 | Dark | Down | 23.4 | 305.2 | Low | 11:34:26 - 11:55:10 | 805 |
| Bishop | 11:44:47 | -39.5 | Dark | Down | 22.6 | 305.8 | Low | 11:34:25 - 11:55:09 | 798 |
| Yuma | 11:44:35 | -36.5 | Dark | Down | 17.3 | 308.6 | Really Low | 11:34:13 - 11:54:57 | 647 |
| Calipatria | 11:44:36 | -37.3 | Dark | Down | 18.2 | 308.1 | Really Low | 11:34:14 - 11:54:58 | 626 |
| Idyllwild | 11:44:38 | -38.3 | Dark | Down | 19.4 | 307.5 | Really Low | 11:34:16 - 11:55:00 | 604 |
| Wildwood | 11:44:40 | -39.8 | Dark | Down | 20.8 | 306.7 | Low | 11:34:18 - 11:55:02 | 520 |
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 8405, (2023/01/20 11:49UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 28.30 167 34Bet Aur 05:59:31.6 +44:56:51 1.9 4.63 160 PPM 048445 05:47:14.7 +42:31:34 6.3 1.35 161 PPM 048383 05:43:13.9 +41:41:45 7.3 0.26 161 PPM 048390 05:43:31.4 +41:27:32 10.2 0.12 161 8405 05:42:52.5 +41:26:53 16.1 161 Positions are for J2000
Event circumstances last updated at 2023/01/09 03:27:32 UT
Marc W. Buie, Southwest Research Institute