Event between (553137) 11BM170 and star GA1180:03466852 with event index number of 2347814
Geocentric closest approach at 2025/05/04 09:42:46 UTC
J2000 position of star is 12:26:53.8 +28:02:38
Equinox of date position of star is 12:28:06.6 +27:54:33
Stellar brightness G=11.7,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 47 degrees from the moon.
Moon is 48% illuminated.
Apparent brightness V=22.0
[RECON map]
Object is 39.9 AU from the Sun
and 39.3 AU from the Earth.
Apparent velocity is 20.6
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 87 seconds.
The 1-sigma cross-track error in the shadow position is
2687 km.
The sky-plane scale is
28502.6 km/arcsec.
The object has an absolute magnitude Hv=5.9
Diameter=400.0 km assuming a 5% albedo -- 19.6 sec chord
Diameter=163.3 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is SCATNEAR
Star training set for 553137, (2025/05/04 09:43UT) Object RA Dec mag sep mel Arcturus 14:16:49.2 +19:03:07 0.0 26.37 73 Denebola 11:50:21.1 +14:25:49 2.1 16.08 40 15Gam Com 12:28:11.9 +28:07:40 4.4 0.22 47 PPM 101912 12:28:48.6 +27:58:08 8.4 0.16 47 553137 12:28:09.6 +27:54:14 11.7 47 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 22.0 km
RECON observability=1.0 and success probability=2.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 09:38:58 | -13.7 | AT | Down | 31.0 | 277.0 | Up | 09:31:15 - 09:46:41 | -5168 |
| Kamloops | 09:39:18 | -19.6 | Dark | Up | 39.9 | 267.0 | Up | 09:31:35 - 09:47:01 | -5613 |
| Kelowna | 09:39:15 | -20.1 | Dark | Up | 39.3 | 268.3 | Up | 09:31:32 - 09:46:58 | -5677 |
| Peachland | 09:39:16 | -20.3 | Dark | Up | 39.5 | 268.2 | Up | 09:31:33 - 09:46:59 | -5694 |
| Summerland | 09:39:15 | -20.4 | Dark | Up | 39.5 | 268.4 | Up | 09:31:32 - 09:46:58 | -5707 |
| Penticton | 09:39:13 | -20.4 | Dark | Up | 39.4 | 268.5 | Up | 09:31:30 - 09:46:56 | -5712 |
| Oliver | 09:39:13 | -20.8 | Dark | Up | 39.4 | 268.8 | Up | 09:31:30 - 09:46:56 | -5747 |
| Anarchist Mountain Observatory | 09:39:12 | -20.9 | Dark | Up | 39.3 | 269.1 | Up | 09:31:29 - 09:46:55 | -5761 |
| Okanogan | 09:39:11 | -21.5 | Dark | Up | 39.5 | 269.5 | Up | 09:31:28 - 09:46:54 | -5830 |
| Brewster | 09:39:11 | -21.8 | Dark | Up | 39.6 | 269.5 | Up | 09:31:28 - 09:46:54 | -5861 |
| Victoria | 09:39:20 | -22.4 | Dark | Up | 42.0 | 266.4 | Up | 09:31:37 - 09:47:03 | -5883 |
| Manson/Chelan | 09:39:13 | -22.1 | Dark | Up | 39.8 | 269.4 | Up | 09:31:30 - 09:46:56 | -5889 |
| Wenatchee | 09:39:11 | -22.6 | Dark | Up | 40.0 | 269.7 | Up | 09:31:28 - 09:46:54 | -5941 |
| Ellensburg | 09:39:10 | -23.0 | Dark | Up | 40.1 | 269.9 | Up | 09:31:27 - 09:46:53 | -5987 |
| Yakima | 09:39:10 | -23.4 | Dark | Up | 40.1 | 270.2 | Up | 09:31:27 - 09:46:53 | -6029 |
| Toppenish/White Swan | 09:39:09 | -23.5 | Dark | Up | 40.0 | 270.5 | Up | 09:31:26 - 09:46:52 | -6048 |
| PNWRO | 09:39:05 | -23.4 | Dark | Up | 39.0 | 271.9 | Up | 09:31:22 - 09:46:48 | -6056 |
| The Dalles | 09:39:09 | -24.5 | Dark | Up | 40.6 | 270.6 | Up | 09:31:26 - 09:46:52 | -6143 |
| Maupin | 09:39:08 | -24.8 | Dark | Up | 40.5 | 271.0 | Up | 09:31:25 - 09:46:51 | -6184 |
| Dunrhomin | 09:38:28 | -22.4 | Dark | Down | 28.4 | 284.1 | Low | 09:30:45 - 09:46:11 | -6283 |
| Sisters | 09:39:07 | -25.8 | Dark | Up | 40.8 | 271.4 | Up | 09:31:24 - 09:46:50 | -6285 |
| Nikitin | 09:38:29 | -22.5 | Dark | Down | 28.3 | 284.1 | Low | 09:30:46 - 09:46:12 | -6302 |
| Bend | 09:39:06 | -25.9 | Dark | Up | 40.6 | 271.8 | Up | 09:31:23 - 09:46:49 | -6305 |
| CU-SBO | 09:38:28 | -22.6 | Dark | Down | 28.4 | 284.1 | Low | 09:30:45 - 09:46:11 | -6311 |
| Oregon Observatory | 09:39:06 | -26.1 | Dark | Up | 40.7 | 271.9 | Up | 09:31:23 - 09:46:49 | -6325 |
| Chiloquin | 09:39:05 | -27.4 | Dark | Up | 41.0 | 272.7 | Up | 09:31:22 - 09:46:48 | -6471 |
| Klamath Falls | 09:39:04 | -27.7 | Dark | Up | 40.9 | 273.1 | Up | 09:31:21 - 09:46:47 | -6505 |
| Cedarville | 09:38:59 | -27.8 | Dark | Down | 39.7 | 274.7 | Up | 09:31:16 - 09:46:42 | -6545 |
| Fall River/Burney | 09:39:01 | -28.6 | Dark | Down | 40.5 | 274.3 | Up | 09:31:18 - 09:46:44 | -6621 |
| Gimple | 09:38:58 | -29.3 | Dark | Down | 40.1 | 275.4 | Up | 09:31:15 - 09:46:41 | -6706 |
| Greenville | 09:38:59 | -29.3 | Dark | Down | 40.1 | 275.4 | Up | 09:31:16 - 09:46:42 | -6708 |
| Quincy | 09:38:58 | -29.5 | Dark | Down | 40.1 | 275.5 | Up | 09:31:15 - 09:46:41 | -6729 |
| Portola | 09:38:58 | -29.4 | Dark | Down | 39.7 | 275.9 | Up | 09:31:15 - 09:46:41 | -6732 |
| Reno | 09:38:55 | -29.4 | Dark | Down | 39.2 | 276.5 | Up | 09:31:12 - 09:46:38 | -6746 |
| Carson City | 09:38:54 | -29.7 | Dark | Down | 39.2 | 276.8 | Up | 09:31:11 - 09:46:37 | -6783 |
| Yerington | 09:38:52 | -29.6 | Dark | Down | 38.7 | 277.3 | Up | 09:31:09 - 09:46:35 | -6790 |
| Gardnerville | 09:38:55 | -29.9 | Dark | Down | 39.1 | 277.0 | Up | 09:31:12 - 09:46:38 | -6808 |
| Hawthorne | 09:38:51 | -29.8 | Dark | Down | 38.2 | 278.0 | Up | 09:31:08 - 09:46:34 | -6826 |
| Lee Vining | 09:38:52 | -30.5 | Dark | Down | 38.5 | 278.1 | Up | 09:31:09 - 09:46:35 | -6897 |
| Bishop | 09:38:49 | -30.8 | Dark | Down | 37.8 | 279.0 | Up | 09:31:06 - 09:46:32 | -6943 |
| Beatty | 09:38:44 | -30.5 | Dark | Down | 36.5 | 280.1 | Up | 09:31:01 - 09:46:27 | -6952 |
| Patrick | 09:38:35 | -30.4 | Dark | Down | 33.9 | 282.5 | Up | 09:30:52 - 09:46:18 | -7033 |
| Laughlin/Bullhead City | 09:38:37 | -31.0 | Dark | Down | 34.4 | 282.4 | Up | 09:30:54 - 09:46:20 | -7078 |
| Lake Havasu City | 09:38:35 | -31.4 | Dark | Down | 34.1 | 282.9 | Up | 09:30:52 - 09:46:18 | -7142 |
| George/Scottsdale | 09:38:29 | -30.8 | Dark | Down | 31.9 | 284.5 | Up | 09:30:46 - 09:46:12 | -7153 |
| Idyllwild | 09:38:40 | -33.1 | Dark | Down | 35.8 | 282.4 | Up | 09:30:57 - 09:46:23 | -7286 |
| Wildwood | 09:38:44 | -33.7 | Dark | Down | 37.4 | 281.3 | Up | 09:31:01 - 09:46:27 | -7295 |
| Calipatria | 09:38:36 | -33.1 | Dark | Down | 34.8 | 283.3 | Up | 09:30:53 - 09:46:19 | -7319 |
| Yuma | 09:38:34 | -33.0 | Dark | Down | 33.9 | 284.0 | Up | 09:30:51 - 09:46:17 | -7340 |
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 553137, (2025/05/04 09:43UT) Object RA Dec mag sep mel Arcturus 14:15:37.8 +19:10:08 0.0 26.37 73 Denebola 11:49:02.8 +14:34:17 2.1 16.08 40 15Gam Com 12:26:56.1 +28:16:04 4.4 0.22 47 PPM 101912 12:27:32.9 +28:06:32 8.4 0.16 47 553137 12:26:53.8 +28:02:38 11.7 47 Positions are for J2000
Event circumstances last updated at 2024/05/05 03:30:54 UT
Marc W. Buie, Southwest Research Institute