Event between (523767) 14WH510 and star GA0840:03865105 with event index number of 2612579
Geocentric closest approach at 2025/05/20 04:14:26 UTC
J2000 position of star is 09:57:38.9 -05:51:14
Equinox of date position of star is 09:58:52.0 -05:58:14
Stellar brightness G=15.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon.
Moon is 54% illuminated.
Apparent brightness V=22.1
[RECON map]
Object is 34.8 AU from the Sun
and 34.7 AU from the Earth.
Apparent velocity is 8.5
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 182 seconds.
The 1-sigma cross-track error in the shadow position is
1397 km.
The sky-plane scale is
25194.9 km/arcsec.
The object has an absolute magnitude Hv=6.5
Diameter=297.9 km assuming a 5% albedo -- 35.8 sec chord
Diameter=121.6 km assuming a 30% albedo -- 14.6 sec chord
Dynamical classification is SCATNEAR
Star training set for 523767, (2025/05/20 04:16UT) Object RA Dec mag sep mel Regulus 10:09:43.3 +11:50:32 1.3 18.02 175 Alphard 09:28:50.1 -08:46:12 2.0 7.96 155 8Gam Sex 09:53:45.9 -08:13:32 4.8 2.59 156 PPM 192916 09:58:05.8 -05:54:22 8.4 0.22 159 PPM 192941 09:59:15.3 -06:07:27 9.4 0.17 159 523767 09:58:55.2 -05:58:33 15.1 159 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 52.6 km
RECON observability=0.3 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) |
| Kamloops | 04:25:15 | -5.3 | CT | Down | 26.1 | 219.0 | Low | 04:10:15 - 04:40:15 | 8604 |
| Victoria | 04:24:58 | -5.1 | CT | Down | 29.0 | 216.5 | Low | 04:09:58 - 04:39:58 | 8580 |
| Peachland | 04:25:15 | -6.2 | NT | Down | 26.6 | 219.9 | Low | 04:10:15 - 04:40:15 | 8503 |
| Kelowna | 04:25:16 | -6.2 | NT | Down | 26.4 | 220.2 | Low | 04:10:16 - 04:40:16 | 8499 |
| Summerland | 04:25:19 | -6.3 | NT | Down | 26.6 | 220.1 | Low | 04:10:19 - 04:40:19 | 8487 |
| Penticton | 04:25:19 | -6.4 | NT | Down | 26.6 | 220.2 | Low | 04:10:19 - 04:40:19 | 8477 |
| Oliver | 04:25:19 | -6.7 | NT | Down | 26.9 | 220.3 | Low | 04:10:19 - 04:40:19 | 8449 |
| Anarchist Mountain Observatory | 04:25:15 | -6.9 | NT | Down | 27.0 | 220.5 | Low | 04:10:15 - 04:40:15 | 8426 |
| Okanogan | 04:25:19 | -7.2 | NT | Down | 27.5 | 220.6 | Low | 04:10:19 - 04:40:19 | 8384 |
| Manson/Chelan | 04:25:11 | -7.2 | NT | Down | 28.2 | 220.1 | Low | 04:10:11 - 04:40:11 | 8373 |
| Brewster | 04:25:15 | -7.3 | NT | Down | 27.8 | 220.4 | Low | 04:10:15 - 04:40:15 | 8372 |
| Wenatchee | 04:25:08 | -7.4 | NT | Down | 28.6 | 220.1 | Low | 04:10:08 - 04:40:08 | 8343 |
| Ellensburg | 04:25:05 | -7.6 | NT | Down | 29.0 | 220.0 | Low | 04:10:05 - 04:40:05 | 8321 |
| Yakima | 04:25:08 | -7.8 | NT | Down | 29.3 | 220.1 | Low | 04:10:08 - 04:40:08 | 8289 |
| Toppenish/White Swan | 04:25:12 | -8.1 | NT | Down | 29.4 | 220.4 | Low | 04:10:12 - 04:40:12 | 8263 |
| The Dalles | 04:25:00 | -8.1 | NT | Down | 30.4 | 219.8 | Up | 04:10:00 - 04:40:00 | 8240 |
| Maupin | 04:24:59 | -8.4 | NT | Down | 30.7 | 220.1 | Up | 04:09:59 - 04:39:59 | 8202 |
| PNWRO | 04:25:15 | -9.1 | NT | Down | 29.0 | 222.1 | Low | 04:10:15 - 04:40:15 | 8159 |
| Sisters | 04:25:01 | -8.7 | NT | Down | 31.6 | 219.9 | Up | 04:10:01 - 04:40:01 | 8156 |
| Sleaford | 04:26:07 | -10.5 | NT | Down | 18.6 | 232.7 | Really Low | 04:11:07 - 04:41:07 | 8132 |
| Bend | 04:24:58 | -9.0 | NT | Down | 31.6 | 220.3 | Up | 04:09:58 - 04:39:58 | 8124 |
| Oregon Observatory | 04:24:59 | -9.1 | NT | Down | 31.8 | 220.2 | Up | 04:09:59 - 04:39:59 | 8116 |
| Chiloquin | 04:24:52 | -9.6 | NT | Down | 33.0 | 220.3 | Up | 04:09:52 - 04:39:52 | 8032 |
| Klamath Falls | 04:24:52 | -9.9 | NT | Down | 33.3 | 220.5 | Up | 04:09:52 - 04:39:52 | 8000 |
| Fall River/Burney | 04:24:43 | -10.8 | NT | Down | 34.0 | 221.4 | Up | 04:09:43 - 04:39:43 | 7883 |
| Cedarville | 04:25:01 | -11.3 | NT | Down | 33.0 | 222.5 | Up | 04:10:01 - 04:40:01 | 7857 |
| Greenville | 04:24:50 | -11.7 | NT | Down | 34.4 | 222.3 | Up | 04:09:50 - 04:39:50 | 7784 |
| Gimple | 04:24:54 | -11.8 | NT | Down | 34.4 | 222.4 | Up | 04:09:54 - 04:39:54 | 7780 |
| Quincy | 04:24:50 | -11.8 | NT | Down | 34.6 | 222.4 | Up | 04:09:50 - 04:39:50 | 7767 |
| Portola | 04:24:46 | -12.2 | AT | Down | 34.4 | 222.9 | Up | 04:09:46 - 04:39:46 | 7731 |
| Reno | 04:24:57 | -12.8 | AT | Down | 34.2 | 223.8 | Up | 04:09:57 - 04:39:57 | 7673 |
| Carson City | 04:24:52 | -13.0 | AT | Down | 34.5 | 223.9 | Up | 04:09:52 - 04:39:52 | 7641 |
| Gardnerville | 04:24:46 | -13.2 | AT | Down | 34.7 | 224.1 | Up | 04:09:46 - 04:39:46 | 7618 |
| Yerington | 04:24:54 | -13.5 | AT | Down | 34.3 | 224.7 | Up | 04:09:54 - 04:39:54 | 7590 |
| Hawthorne | 04:24:54 | -14.1 | AT | Down | 34.3 | 225.4 | Up | 04:09:54 - 04:39:54 | 7521 |
| Lee Vining | 04:24:54 | -14.2 | AT | Down | 35.0 | 225.2 | Up | 04:09:54 - 04:39:54 | 7501 |
| Bishop | 04:24:54 | -15.0 | AT | Down | 35.0 | 226.3 | Up | 04:09:54 - 04:39:54 | 7410 |
| Beatty | 04:24:57 | -16.3 | AT | Down | 34.4 | 228.1 | Up | 04:09:57 - 04:39:57 | 7279 |
| Wildwood | 04:24:39 | -17.0 | AT | Down | 37.4 | 227.7 | Up | 04:09:39 - 04:39:39 | 7142 |
| Laughlin/Bullhead City | 04:25:04 | -18.8 | Dark | Down | 34.1 | 231.1 | Up | 04:10:04 - 04:40:04 | 7007 |
| Idyllwild | 04:24:50 | -18.4 | Dark | Down | 36.4 | 229.8 | Up | 04:09:50 - 04:39:50 | 7002 |
| Dunrhomin | 04:26:01 | -20.2 | Dark | Down | 25.0 | 237.2 | Low | 04:11:01 - 04:41:01 | 7001 |
| Patrick | 04:25:11 | -19.1 | Dark | Down | 33.5 | 231.7 | Up | 04:10:11 - 04:40:11 | 6990 |
| Nikitin | 04:26:00 | -20.3 | Dark | Down | 25.1 | 237.3 | Low | 04:11:00 - 04:41:00 | 6985 |
| CU-SBO | 04:25:59 | -20.4 | Dark | Down | 25.2 | 237.2 | Low | 04:10:59 - 04:40:59 | 6982 |
| Lake Havasu City | 04:25:04 | -19.4 | Dark | Down | 34.4 | 231.7 | Up | 04:10:04 - 04:40:04 | 6933 |
| Calipatria | 04:24:54 | -19.6 | Dark | Down | 36.0 | 231.3 | Up | 04:09:54 - 04:39:54 | 6881 |
| Yuma | 04:24:50 | -20.4 | Dark | Down | 35.7 | 232.4 | Up | 04:09:50 - 04:39:50 | 6792 |
| George/Scottsdale | 04:25:08 | -21.4 | Dark | Down | 33.2 | 234.3 | Up | 04:10:08 - 04:40:08 | 6729 |
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 523767, (2025/05/20 04:16UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 18.02 175 Alphard 09:27:35.2 -08:39:30 2.0 7.96 155 8Gam Sex 09:52:30.4 -08:06:19 4.8 2.59 156 PPM 192916 09:56:49.5 -05:47:05 8.4 0.22 159 PPM 192941 09:57:59.1 -06:00:08 9.4 0.17 159 523767 09:57:38.9 -05:51:14 15.1 159 Positions are for J2000
Event circumstances last updated at 2024/04/23 03:22:13 UT
Marc W. Buie, Southwest Research Institute