Event between (54598) Bienor and star GA1320:03423860 with event index number of 1210480
Geocentric closest approach at 2023/01/22 10:43:42 UTC
J2000 position of star is 05:58:39.8 +43:41:57
Equinox of date position of star is 06:00:20.1 +43:41:58
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 138 degrees from the moon.
Moon is 1% illuminated.
Apparent brightness V=18.9
[RECON map]
Object is 13.7 AU from the Sun
and 12.9 AU from the Earth.
Apparent velocity is 18.4
km/sec on the sky relative to the star, or,
7.1 arcsec/hr.
The 1-sigma error in the time of the event is 31 seconds.
The 1-sigma cross-track error in the shadow position is
482 km.
The sky-plane scale is
9373.9 km/arcsec.
The object has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 10.6 sec chord
Diameter=79.6 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2023/01/22 10:44UT) Object RA Dec mag sep mel Pollux 07:46:43.5 +27:58:07 1.1 26.50 163 34Bet Aur 06:01:13.3 +44:56:50 1.9 1.26 137 38 Aur 06:04:57.7 +42:54:30 6.1 1.16 139 PPM 048653 06:02:50.5 +43:40:29 8.3 0.45 138 PPM 048603 06:00:05.4 +43:22:18 9.9 0.33 138 PPM 048607 06:00:13.9 +43:30:16 10.7 0.20 138 54598 06:00:20.1 +43:41:58 16.2 138 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 21.2 km
RECON observability=1.0 and success probability=56.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:39:17 | -39.0 | Dark | Down | 35.3 | 297.9 | Up | 10:36:13 - 10:42:21 | 136 |
| Kamloops | 10:39:37 | -47.7 | Dark | Down | 42.9 | 290.7 | Up | 10:36:33 - 10:42:41 | -545 |
| Kelowna | 10:39:32 | -47.6 | Dark | Down | 42.1 | 291.9 | Up | 10:36:28 - 10:42:36 | -591 |
| Peachland | 10:39:33 | -47.8 | Dark | Down | 42.2 | 291.9 | Up | 10:36:29 - 10:42:37 | -612 |
| Summerland | 10:39:32 | -47.9 | Dark | Down | 42.1 | 292.0 | Up | 10:36:28 - 10:42:36 | -623 |
| Penticton | 10:39:32 | -47.8 | Dark | Down | 42.0 | 292.1 | Up | 10:36:28 - 10:42:36 | -625 |
| Oliver | 10:39:31 | -48.0 | Dark | Down | 41.9 | 292.4 | Up | 10:36:27 - 10:42:35 | -658 |
| Anarchist Mountain Observatory | 10:39:30 | -48.0 | Dark | Down | 41.7 | 292.7 | Up | 10:36:26 - 10:42:34 | -668 |
| Okanogan | 10:39:29 | -48.5 | Dark | Down | 41.6 | 293.1 | Up | 10:36:25 - 10:42:33 | -737 |
| Brewster | 10:39:28 | -48.7 | Dark | Down | 41.6 | 293.2 | Up | 10:36:24 - 10:42:32 | -770 |
| Manson/Chelan | 10:39:29 | -49.0 | Dark | Down | 41.7 | 293.2 | Up | 10:36:25 - 10:42:33 | -804 |
| Dunrhomin | 10:38:43 | -41.6 | Dark | Down | 28.8 | 304.6 | Low | 10:35:39 - 10:41:47 | -834 |
| Nikitin | 10:38:42 | -41.6 | Dark | Down | 28.7 | 304.7 | Low | 10:35:38 - 10:41:46 | -851 |
| Wenatchee | 10:39:28 | -49.4 | Dark | Down | 41.7 | 293.5 | Up | 10:36:24 - 10:42:32 | -856 |
| Victoria | 10:39:38 | -50.5 | Dark | Down | 44.0 | 291.0 | Up | 10:36:34 - 10:42:42 | -857 |
| CU-SBO | 10:38:42 | -41.7 | Dark | Down | 28.7 | 304.7 | Low | 10:35:38 - 10:41:46 | -861 |
| Ellensburg | 10:39:28 | -49.7 | Dark | Down | 41.6 | 293.7 | Up | 10:36:24 - 10:42:32 | -904 |
| PNWRO | 10:39:22 | -49.2 | Dark | Down | 40.2 | 295.3 | Up | 10:36:18 - 10:42:26 | -936 |
| Yakima | 10:39:27 | -49.9 | Dark | Down | 41.5 | 294.0 | Up | 10:36:23 - 10:42:31 | -944 |
| Toppenish/White Swan | 10:39:26 | -49.9 | Dark | Down | 41.3 | 294.3 | Up | 10:36:22 - 10:42:30 | -958 |
| The Dalles | 10:39:26 | -50.8 | Dark | Down | 41.5 | 294.5 | Up | 10:36:22 - 10:42:30 | -1063 |
| Maupin | 10:39:25 | -50.9 | Dark | Down | 41.2 | 294.9 | Up | 10:36:21 - 10:42:29 | -1100 |
| Sisters | 10:39:23 | -51.7 | Dark | Down | 41.2 | 295.4 | Up | 10:36:19 - 10:42:27 | -1204 |
| Bend | 10:39:23 | -51.6 | Dark | Down | 40.9 | 295.7 | Up | 10:36:19 - 10:42:27 | -1217 |
| Oregon Observatory | 10:39:23 | -51.8 | Dark | Down | 40.9 | 295.8 | Up | 10:36:19 - 10:42:27 | -1239 |
| Chiloquin | 10:39:21 | -52.7 | Dark | Down | 40.6 | 296.6 | Up | 10:36:17 - 10:42:25 | -1384 |
| Klamath Falls | 10:39:20 | -52.8 | Dark | Down | 40.4 | 296.9 | Up | 10:36:16 - 10:42:24 | -1414 |
| Cedarville | 10:39:15 | -52.0 | Dark | Down | 39.0 | 298.0 | Up | 10:36:11 - 10:42:19 | -1418 |
| Fall River/Burney | 10:39:17 | -53.0 | Dark | Down | 39.6 | 297.9 | Up | 10:36:13 - 10:42:21 | -1515 |
| Gimple | 10:39:14 | -53.0 | Dark | Down | 38.8 | 298.8 | Up | 10:36:10 - 10:42:18 | -1582 |
| Greenville | 10:39:14 | -53.1 | Dark | Down | 38.9 | 298.7 | Up | 10:36:10 - 10:42:18 | -1585 |
| Reno | 10:39:10 | -52.5 | Dark | Down | 37.9 | 299.5 | Up | 10:36:06 - 10:42:14 | -1595 |
| Portola | 10:39:12 | -52.9 | Dark | Down | 38.4 | 299.1 | Up | 10:36:08 - 10:42:16 | -1597 |
| Quincy | 10:39:14 | -53.2 | Dark | Down | 38.8 | 298.9 | Up | 10:36:10 - 10:42:18 | -1604 |
| Yerington | 10:39:08 | -52.2 | Dark | Down | 37.1 | 300.1 | Up | 10:36:04 - 10:42:12 | -1621 |
| Carson City | 10:39:10 | -52.6 | Dark | Down | 37.7 | 299.8 | Up | 10:36:06 - 10:42:14 | -1629 |
| Hawthorne | 10:39:05 | -52.0 | Dark | Down | 36.6 | 300.6 | Up | 10:36:01 - 10:42:09 | -1642 |
| Gardnerville | 10:39:09 | -52.7 | Dark | Down | 37.5 | 300.0 | Up | 10:36:05 - 10:42:13 | -1651 |
| Beatty | 10:38:59 | -51.1 | Dark | Down | 34.5 | 302.2 | Up | 10:35:55 - 10:42:03 | -1713 |
| Patrick | 10:38:49 | -49.2 | Dark | Down | 31.7 | 303.9 | Up | 10:35:45 - 10:41:53 | -1714 |
| Lee Vining | 10:39:05 | -52.5 | Dark | Down | 36.6 | 300.8 | Up | 10:36:01 - 10:42:09 | -1718 |
| Bishop | 10:39:03 | -52.2 | Dark | Down | 35.8 | 301.4 | Up | 10:35:59 - 10:42:07 | -1743 |
| George/Scottsdale | 10:38:42 | -47.8 | Dark | Down | 29.4 | 305.3 | Low | 10:35:38 - 10:41:46 | -1769 |
| Laughlin/Bullhead City | 10:38:50 | -49.8 | Dark | Down | 32.1 | 303.8 | Up | 10:35:46 - 10:41:54 | -1772 |
| Lake Havasu City | 10:38:48 | -49.7 | Dark | Down | 31.5 | 304.2 | Up | 10:35:44 - 10:41:52 | -1822 |
| Yuma | 10:38:47 | -50.3 | Dark | Down | 30.7 | 305.0 | Up | 10:35:43 - 10:41:51 | -2006 |
| Calipatria | 10:38:50 | -50.9 | Dark | Down | 31.6 | 304.6 | Up | 10:35:46 - 10:41:54 | -2010 |
| Idyllwild | 10:38:53 | -51.8 | Dark | Down | 32.7 | 303.9 | Up | 10:35:49 - 10:41:57 | -2011 |
| Wildwood | 10:38:58 | -53.2 | Dark | Down | 34.2 | 303.3 | Up | 10:35:54 - 10:42:02 | -2066 |
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 54598, (2023/01/22 10:44UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 26.50 163 34Bet Aur 05:59:31.6 +44:56:51 1.9 1.26 137 38 Aur 06:03:18.2 +42:54:39 6.1 1.16 139 PPM 048653 06:01:10.2 +43:40:33 8.3 0.45 138 PPM 048603 05:58:25.4 +43:22:16 9.9 0.33 138 PPM 048607 05:58:33.8 +43:30:15 10.7 0.20 138 54598 05:58:39.8 +43:41:57 16.2 138 Positions are for J2000
Event circumstances last updated at 2023/01/22 03:06:05 UT
Marc W. Buie, Southwest Research Institute