Event between (54598) Bienor and star GA1300:03578336 with event index number of 1299501
Geocentric closest approach at 2024/04/05 03:06:33 UTC
J2000 position of star is 06:36:41.8 +40:30:38
Equinox of date position of star is 06:38:23.4 +40:29:19
Stellar brightness G=12.9,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 131 degrees from the moon.
Moon is 19% illuminated.
Apparent brightness V=19.1
[RECON map]
Object is 13.5 AU from the Sun
and 13.6 AU from the Earth.
Apparent velocity is 16.1
km/sec on the sky relative to the star, or,
5.9 arcsec/hr.
The 1-sigma error in the time of the event is 34 seconds.
The 1-sigma cross-track error in the shadow position is
529 km.
The sky-plane scale is
9864.9 km/arcsec.
The object has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 12.1 sec chord
Diameter=79.6 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is CENTAURR
Star training set for 54598, (2024/04/05 03:07UT) Object RA Dec mag sep mel Pollux 07:46:48.0 +27:57:56 1.1 18.82 148 34Bet Aur 06:01:18.6 +44:56:50 1.9 8.13 124 52Psi3Aur 06:40:30.4 +39:52:44 5.2 0.73 132 PPM 049235 06:42:03.6 +40:56:44 7.3 0.83 132 PPM 049217 06:40:49.9 +40:26:52 10.0 0.47 132 PPM 049185 06:38:56.6 +40:21:17 11.0 0.17 132 54598 06:38:23.7 +40:29:19 12.9 132 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 9.3 km
RECON observability=0.1 and success probability=70.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 03:06:59 | -12.8 | AT | Down | 63.2 | 258.7 | Up | 03:03:40 - 03:10:18 | 384 |
| Dunrhomin | 03:08:18 | -18.9 | Dark | Down | 62.3 | 282.6 | Up | 03:04:59 - 03:11:37 | -19 |
| Nikitin | 03:08:19 | -18.9 | Dark | Down | 62.3 | 283.0 | Up | 03:05:00 - 03:11:38 | -28 |
| CU-SBO | 03:08:19 | -18.9 | Dark | Down | 62.3 | 283.1 | Up | 03:05:00 - 03:11:38 | -37 |
| Kelowna | 03:06:49 | -5.7 | CT | Down | 72.0 | 247.1 | Up | 03:03:30 - 03:10:08 | -509 |
| Kamloops | 03:06:42 | -4.9 | CT | Down | 72.2 | 243.3 | Up | 03:03:23 - 03:10:01 | -519 |
| Penticton | 03:06:51 | -5.8 | CT | Down | 72.2 | 247.9 | Up | 03:03:32 - 03:10:10 | -532 |
| Peachland | 03:06:49 | -5.6 | CT | Down | 72.2 | 247.0 | Up | 03:03:30 - 03:10:08 | -533 |
| Summerland | 03:06:51 | -5.7 | CT | Down | 72.2 | 247.5 | Up | 03:03:32 - 03:10:10 | -535 |
| Anarchist Mountain Observatory | 03:06:55 | -6.1 | NT | Down | 72.2 | 249.7 | Up | 03:03:36 - 03:10:14 | -548 |
| Oliver | 03:06:53 | -5.9 | CT | Down | 72.3 | 248.9 | Up | 03:03:34 - 03:10:12 | -551 |
| Okanogan | 03:06:58 | -6.1 | NT | Down | 72.6 | 251.4 | Up | 03:03:39 - 03:10:17 | -597 |
| Brewster | 03:06:59 | -6.1 | NT | Down | 72.8 | 251.9 | Up | 03:03:40 - 03:10:18 | -624 |
| Manson/Chelan | 03:06:59 | -5.9 | CT | Down | 73.1 | 252.0 | Up | 03:03:40 - 03:10:18 | -658 |
| PNWRO | 03:07:14 | -7.3 | NT | Down | 72.7 | 259.6 | Up | 03:03:55 - 03:10:33 | -681 |
| Wenatchee | 03:07:02 | -5.9 | CT | Down | 73.3 | 253.3 | Up | 03:03:43 - 03:10:21 | -695 |
| Ellensburg | 03:07:04 | -5.9 | CT | Down | 73.6 | 254.4 | Up | 03:03:45 - 03:10:23 | -731 |
| Yakima | 03:07:06 | -6.0 | CT | Down | 73.7 | 255.7 | Up | 03:03:47 - 03:10:25 | -755 |
| Toppenish/White Swan | 03:07:08 | -6.2 | NT | Down | 73.6 | 256.6 | Up | 03:03:49 - 03:10:27 | -756 |
| Victoria | 03:06:48 | -3.6 | CT | Down | 74.9 | 244.7 | Up | 03:03:29 - 03:10:07 | -820 |
| George/Scottsdale | 03:08:45 | -16.6 | AT | Down | 65.2 | 294.7 | Up | 03:05:26 - 03:12:04 | -832 |
| The Dalles | 03:07:11 | -5.9 | CT | Down | 74.3 | 258.3 | Up | 03:03:52 - 03:10:30 | -851 |
| Maupin | 03:07:14 | -6.0 | NT | Down | 74.3 | 259.9 | Up | 03:03:55 - 03:10:33 | -868 |
| Patrick | 03:08:31 | -14.4 | AT | Down | 67.4 | 291.5 | Up | 03:05:12 - 03:11:50 | -897 |
| Bend | 03:07:20 | -6.2 | NT | Down | 74.6 | 263.7 | Up | 03:04:01 - 03:10:39 | -947 |
| Sisters | 03:07:18 | -5.9 | CT | Down | 74.8 | 262.5 | Up | 03:03:59 - 03:10:37 | -951 |
| Laughlin/Bullhead City | 03:08:30 | -13.9 | AT | Down | 67.9 | 292.1 | Up | 03:05:11 - 03:11:49 | -965 |
| Oregon Observatory | 03:07:21 | -6.1 | NT | Down | 74.7 | 264.2 | Up | 03:04:02 - 03:10:40 | -966 |
| Lake Havasu City | 03:08:35 | -14.3 | AT | Down | 67.4 | 293.6 | Up | 03:05:16 - 03:11:54 | -982 |
| Cedarville | 03:07:38 | -7.7 | NT | Down | 73.8 | 273.5 | Up | 03:04:19 - 03:10:57 | -1016 |
| Beatty | 03:08:15 | -11.7 | NT | Down | 70.2 | 288.2 | Up | 03:04:56 - 03:11:34 | -1034 |
| Chiloquin | 03:07:27 | -6.2 | NT | Down | 75.1 | 268.7 | Up | 03:04:08 - 03:10:46 | -1071 |
| Hawthorne | 03:08:00 | -9.7 | NT | Down | 72.1 | 283.7 | Up | 03:04:41 - 03:11:19 | -1080 |
| Klamath Falls | 03:07:30 | -6.3 | NT | Down | 75.0 | 270.1 | Up | 03:04:11 - 03:10:49 | -1086 |
| Yerington | 03:07:56 | -9.2 | NT | Down | 72.6 | 282.2 | Up | 03:04:37 - 03:11:15 | -1091 |
| Yuma | 03:08:45 | -14.7 | AT | Down | 66.8 | 297.5 | Up | 03:05:26 - 03:12:04 | -1105 |
| Reno | 03:07:50 | -8.5 | NT | Down | 73.3 | 280.3 | Up | 03:04:31 - 03:11:09 | -1106 |
| Carson City | 03:07:53 | -8.7 | NT | Down | 73.2 | 281.5 | Up | 03:04:34 - 03:11:12 | -1125 |
| Bishop | 03:08:08 | -10.3 | NT | Down | 71.6 | 287.1 | Up | 03:04:49 - 03:11:27 | -1129 |
| Fall River/Burney | 03:07:37 | -6.9 | NT | Down | 74.7 | 274.7 | Up | 03:04:18 - 03:10:56 | -1129 |
| Gardnerville | 03:07:55 | -8.8 | NT | Down | 73.1 | 282.3 | Up | 03:04:36 - 03:11:14 | -1136 |
| Portola | 03:07:48 | -8.0 | NT | Down | 73.8 | 279.3 | Up | 03:04:29 - 03:11:07 | -1137 |
| Gimple | 03:07:44 | -7.6 | NT | Down | 74.2 | 278.1 | Up | 03:04:25 - 03:11:03 | -1146 |
| Lee Vining | 03:08:02 | -9.5 | NT | Down | 72.3 | 285.4 | Up | 03:04:43 - 03:11:21 | -1148 |
| Calipatria | 03:08:40 | -13.8 | AT | Down | 67.7 | 297.0 | Up | 03:05:21 - 03:11:59 | -1151 |
| Greenville | 03:07:44 | -7.5 | NT | Down | 74.2 | 278.1 | Up | 03:04:25 - 03:11:03 | -1151 |
| Quincy | 03:07:45 | -7.6 | NT | Down | 74.2 | 278.8 | Up | 03:04:26 - 03:11:04 | -1163 |
| Idyllwild | 03:08:33 | -12.7 | AT | Down | 68.9 | 296.1 | Up | 03:05:14 - 03:11:52 | -1209 |
| Wildwood | 03:08:26 | -11.0 | NT | Down | 70.5 | 296.0 | Up | 03:05:07 - 03:11:45 | -1334 |
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, (2024/04/05 03:07UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 18.82 148 34Bet Aur 05:59:31.6 +44:56:51 1.9 8.13 124 52Psi3Aur 06:38:49.2 +39:54:08 5.2 0.73 132 PPM 049235 06:40:21.3 +40:58:11 7.3 0.83 132 PPM 049217 06:39:08.1 +40:28:17 10.0 0.47 132 PPM 049185 06:37:14.8 +40:22:37 11.0 0.17 132 54598 06:36:41.8 +40:30:38 12.9 131 Positions are for J2000
Event circumstances last updated at 2024/03/05 04:22:19 UT
Marc W. Buie, Southwest Research Institute