Event between (535990) 15BW518 and star GA1080:03311461 with event index number of 2257883
Geocentric closest approach at 2026/02/03 12:50:47 UTC
J2000 position of star is 10:33:13.7 +18:13:06
Equinox of date position of star is 10:34:31.6 +18:05:37
Stellar brightness G=14.3,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 8 degrees from the moon.
Moon is 97% illuminated.
Apparent brightness V=22.5
[RECON map]
Object is 38.3 AU from the Sun
and 37.3 AU from the Earth.
Apparent velocity is 23.4
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is
2177 km.
The sky-plane scale is
27083.4 km/arcsec.
The object has an absolute magnitude Hv=6.7
Diameter=270.4 km assuming a 5% albedo -- 11.6 sec chord
Diameter=110.4 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 535990, (2026/02/03 12:52UT) Object RA Dec mag sep mel Regulus 10:09:45.6 +11:50:19 1.3 8.66 6 PPM 127411 10:28:25.4 +19:13:51 6.1 1.87 10 PPM 127485 10:33:30.0 +17:51:17 8.0 0.35 8 PPM 127518 10:35:33.6 +18:08:35 10.3 0.23 9 535990 10:34:38.1 +18:04:59 14.3 8 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 8.9 km
RECON observability=1.0 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) |
| Sleaford | 12:49:44 | -17.1 | AT | Up | 31.4 | 259.1 | Up | 12:37:10 - 13:02:18 | 12564 |
| Kamloops | 12:49:56 | -26.1 | Dark | Up | 40.4 | 247.0 | Up | 12:37:22 - 13:02:30 | 12028 |
| Dunrhomin | 12:48:52 | -15.3 | AT | Up | 32.5 | 266.9 | Up | 12:36:18 - 13:01:26 | 12020 |
| Kelowna | 12:49:51 | -25.6 | Dark | Up | 40.2 | 248.5 | Up | 12:37:17 - 13:02:25 | 12017 |
| Nikitin | 12:48:51 | -15.3 | AT | Up | 32.5 | 267.0 | Up | 12:36:17 - 13:01:25 | 12009 |
| CU-SBO | 12:48:51 | -15.4 | AT | Up | 32.6 | 267.0 | Up | 12:36:17 - 13:01:25 | 12002 |
| Peachland | 12:49:51 | -25.8 | Dark | Up | 40.4 | 248.3 | Up | 12:37:17 - 13:02:25 | 12001 |
| Penticton | 12:49:50 | -25.7 | Dark | Up | 40.4 | 248.6 | Up | 12:37:16 - 13:02:24 | 11997 |
| Summerland | 12:49:51 | -25.8 | Dark | Up | 40.4 | 248.5 | Up | 12:37:17 - 13:02:25 | 11997 |
| Oliver | 12:49:49 | -25.7 | Dark | Up | 40.5 | 248.9 | Up | 12:37:15 - 13:02:23 | 11978 |
| Anarchist Mountain Observatory | 12:49:48 | -25.6 | Dark | Up | 40.5 | 249.2 | Up | 12:37:14 - 13:02:22 | 11977 |
| Okanogan | 12:49:44 | -25.8 | Dark | Up | 40.8 | 249.5 | Up | 12:37:10 - 13:02:18 | 11933 |
| Brewster | 12:49:45 | -26.0 | Dark | Up | 41.1 | 249.5 | Up | 12:37:11 - 13:02:19 | 11911 |
| Manson/Chelan | 12:49:45 | -26.2 | Dark | Up | 41.4 | 249.4 | Up | 12:37:11 - 13:02:19 | 11886 |
| Wenatchee | 12:49:41 | -26.4 | Dark | Up | 41.6 | 249.6 | Up | 12:37:07 - 13:02:15 | 11854 |
| PNWRO | 12:49:36 | -25.5 | Dark | Up | 41.2 | 252.0 | Up | 12:37:02 - 13:02:10 | 11827 |
| Ellensburg | 12:49:42 | -26.6 | Dark | Up | 41.9 | 249.7 | Up | 12:37:08 - 13:02:16 | 11822 |
| Victoria | 12:49:53 | -28.3 | Dark | Up | 43.1 | 245.7 | Up | 12:37:19 - 13:02:27 | 11803 |
| Yakima | 12:49:41 | -26.6 | Dark | Up | 42.1 | 250.0 | Up | 12:37:07 - 13:02:15 | 11798 |
| Toppenish/White Swan | 12:49:39 | -26.5 | Dark | Up | 42.0 | 250.4 | Up | 12:37:05 - 13:02:13 | 11792 |
| The Dalles | 12:49:36 | -27.1 | Dark | Up | 42.8 | 250.3 | Up | 12:37:02 - 13:02:10 | 11716 |
| Maupin | 12:49:35 | -27.1 | Dark | Up | 42.9 | 250.8 | Up | 12:37:01 - 13:02:09 | 11696 |
| Sisters | 12:49:33 | -27.5 | Dark | Up | 43.5 | 251.1 | Up | 12:36:59 - 13:02:07 | 11623 |
| Bend | 12:49:32 | -27.3 | Dark | Up | 43.4 | 251.5 | Up | 12:36:58 - 13:02:06 | 11619 |
| Oregon Observatory | 12:49:32 | -27.4 | Dark | Up | 43.6 | 251.6 | Up | 12:36:58 - 13:02:06 | 11603 |
| Cedarville | 12:49:20 | -26.6 | Dark | Up | 43.4 | 254.8 | Up | 12:36:46 - 13:01:54 | 11506 |
| Chiloquin | 12:49:27 | -27.8 | Dark | Up | 44.3 | 252.4 | Up | 12:36:53 - 13:02:01 | 11504 |
| Klamath Falls | 12:49:26 | -27.8 | Dark | Up | 44.3 | 252.8 | Up | 12:36:52 - 13:02:00 | 11486 |
| Fall River/Burney | 12:49:20 | -27.6 | Dark | Up | 44.4 | 254.2 | Up | 12:36:46 - 13:01:54 | 11425 |
| Reno | 12:49:11 | -26.4 | Dark | Up | 43.6 | 256.9 | Up | 12:36:37 - 13:01:45 | 11391 |
| Gimple | 12:49:17 | -27.2 | Dark | Up | 44.3 | 255.5 | Up | 12:36:43 - 13:01:51 | 11387 |
| Greenville | 12:49:15 | -27.3 | Dark | Up | 44.3 | 255.4 | Up | 12:36:41 - 13:01:49 | 11383 |
| Portola | 12:49:15 | -26.9 | Dark | Up | 44.1 | 256.1 | Up | 12:36:41 - 13:01:49 | 11382 |
| Yerington | 12:49:09 | -25.9 | Dark | Up | 43.3 | 257.9 | Up | 12:36:35 - 13:01:43 | 11382 |
| Hawthorne | 12:49:06 | -25.5 | Dark | Up | 43.0 | 258.7 | Up | 12:36:32 - 13:01:40 | 11373 |
| Quincy | 12:49:16 | -27.3 | Dark | Up | 44.4 | 255.6 | Up | 12:36:42 - 13:01:50 | 11370 |
| Carson City | 12:49:11 | -26.4 | Dark | Up | 43.7 | 257.2 | Up | 12:36:37 - 13:01:45 | 11368 |
| Patrick | 12:48:47 | -21.6 | Dark | Up | 39.7 | 264.7 | Up | 12:36:13 - 13:01:21 | 11366 |
| Gardnerville | 12:49:11 | -26.4 | Dark | Up | 43.7 | 257.5 | Up | 12:36:37 - 13:01:45 | 11354 |
| Beatty | 12:48:57 | -24.0 | Dark | Up | 41.8 | 261.5 | Up | 12:36:23 - 13:01:31 | 11343 |
| George/Scottsdale | 12:48:37 | -19.8 | Dark | Up | 38.2 | 267.3 | Up | 12:36:03 - 13:01:11 | 11336 |
| Laughlin/Bullhead City | 12:48:46 | -22.1 | Dark | Up | 40.3 | 264.5 | Up | 12:36:12 - 13:01:20 | 11318 |
| Lee Vining | 12:49:05 | -25.9 | Dark | Up | 43.5 | 258.9 | Up | 12:36:31 - 13:01:39 | 11315 |
| Bishop | 12:49:02 | -25.3 | Dark | Up | 43.0 | 259.9 | Up | 12:36:28 - 13:01:36 | 11305 |
| Lake Havasu City | 12:48:43 | -21.9 | Dark | Up | 40.2 | 265.2 | Up | 12:36:09 - 13:01:17 | 11283 |
| Yuma | 12:48:37 | -22.0 | Dark | Up | 40.6 | 266.5 | Up | 12:36:03 - 13:01:11 | 11142 |
| Calipatria | 12:48:41 | -22.7 | Dark | Up | 41.3 | 265.6 | Up | 12:36:07 - 13:01:15 | 11133 |
| Idyllwild | 12:48:43 | -23.8 | Dark | Up | 42.2 | 264.4 | Up | 12:36:09 - 13:01:17 | 11125 |
| Wildwood | 12:48:49 | -25.3 | Dark | Up | 43.7 | 262.8 | Up | 12:36:15 - 13:01:23 | 11066 |
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 535990, (2026/02/03 12:52UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 8.66 6 PPM 127411 10:27:00.4 +19:21:52 6.1 1.87 10 PPM 127485 10:32:05.5 +17:59:22 8.0 0.35 8 PPM 127518 10:34:09.2 +18:16:42 10.3 0.23 9 535990 10:33:13.7 +18:13:06 14.3 8 Positions are for J2000
Event circumstances last updated at 2024/01/29 04:28:23 UT
Marc W. Buie, Southwest Research Institute