Event between (585912) 20QK3 and star GA0840:00246032 with event index number of 2525742
Geocentric closest approach at 2028/10/22 11:37:13 UTC
J2000 position of star is 03:06:15.5 -05:02:28
Equinox of date position of star is 03:07:27.0 -04:56:59
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 130 degrees from the moon.
Moon is 24% illuminated.
Apparent brightness V=20.9
[RECON map]
Object is 15.0 AU from the Sun
and 14.1 AU from the Earth.
Apparent velocity is 20.9
km/sec on the sky relative to the star, or,
7.4 arcsec/hr.
The 1-sigma error in the time of the event is 129 seconds.
The 1-sigma cross-track error in the shadow position is
1366 km.
The sky-plane scale is
10219.6 km/arcsec.
The object has an absolute magnitude Hv=9.1
Diameter=92.0 km assuming a 5% albedo -- 4.4 sec chord
Diameter=37.6 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 585912, (2028/10/22 11:37UT) Object RA Dec mag sep mel Aldebaran 04:37:34.6 +16:33:54 0.8 30.91 161 Menkar 03:03:47.4 +04:12:04 2.5 9.18 135 PPM 185399 03:07:59.1 -05:58:44 4.9 1.05 130 PPM 185405 03:08:14.2 -04:56:29 8.4 0.14 130 PPM 185385 03:07:23.3 -04:58:29 9.5 0.09 130 585912 03:07:41.7 -04:55:52 12.9 131 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 29.7 km
RECON observability=1.0 and success probability=38.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 11:33:29 | -29.4 | Dark | Down | 25.5 | 222.6 | Low | 11:22:15 - 11:44:44 | 639 |
| Victoria | 11:33:35 | -32.0 | Dark | Down | 28.4 | 220.3 | Low | 11:22:21 - 11:44:50 | 559 |
| Peachland | 11:33:27 | -29.4 | Dark | Down | 25.9 | 223.5 | Low | 11:22:13 - 11:44:42 | 544 |
| Kelowna | 11:33:26 | -29.1 | Dark | Down | 25.7 | 223.8 | Low | 11:22:12 - 11:44:41 | 544 |
| Summerland | 11:33:27 | -29.4 | Dark | Down | 26.0 | 223.7 | Low | 11:22:12 - 11:44:41 | 529 |
| Penticton | 11:33:26 | -29.3 | Dark | Down | 26.0 | 223.8 | Low | 11:22:12 - 11:44:41 | 520 |
| Oliver | 11:33:26 | -29.4 | Dark | Down | 26.2 | 223.9 | Low | 11:22:12 - 11:44:41 | 490 |
| Anarchist Mountain Observatory | 11:33:26 | -29.3 | Dark | Down | 26.3 | 224.2 | Low | 11:22:11 - 11:44:40 | 470 |
| Okanogan | 11:33:26 | -29.7 | Dark | Down | 26.8 | 224.2 | Low | 11:22:11 - 11:44:40 | 423 |
| Brewster | 11:33:26 | -29.9 | Dark | Down | 27.1 | 224.1 | Low | 11:22:12 - 11:44:41 | 406 |
| Manson/Chelan | 11:33:27 | -30.2 | Dark | Down | 27.4 | 223.8 | Low | 11:22:13 - 11:44:42 | 400 |
| Sleaford | 11:33:06 | -20.4 | Dark | Down | 17.8 | 235.8 | Really Low | 11:21:52 - 11:44:21 | 368 |
| Wenatchee | 11:33:27 | -30.4 | Dark | Down | 27.9 | 223.8 | Low | 11:22:13 - 11:44:42 | 366 |
| Ellensburg | 11:33:27 | -30.7 | Dark | Down | 28.3 | 223.7 | Low | 11:22:13 - 11:44:42 | 338 |
| Yakima | 11:33:27 | -30.8 | Dark | Down | 28.6 | 223.9 | Low | 11:22:13 - 11:44:42 | 303 |
| Toppenish/White Swan | 11:33:27 | -30.8 | Dark | Down | 28.6 | 224.1 | Low | 11:22:12 - 11:44:41 | 279 |
| The Dalles | 11:33:28 | -31.5 | Dark | Down | 29.6 | 223.6 | Low | 11:22:14 - 11:44:43 | 239 |
| Maupin | 11:33:28 | -31.6 | Dark | Down | 29.8 | 223.9 | Low | 11:22:14 - 11:44:43 | 199 |
| PNWRO | 11:33:23 | -29.9 | Dark | Down | 28.2 | 225.7 | Low | 11:22:09 - 11:44:38 | 198 |
| Sisters | 11:33:29 | -32.2 | Dark | Down | 30.7 | 223.8 | Up | 11:22:15 - 11:44:44 | 140 |
| Bend | 11:33:28 | -32.1 | Dark | Down | 30.7 | 224.1 | Up | 11:22:14 - 11:44:43 | 111 |
| Oregon Observatory | 11:33:29 | -32.2 | Dark | Down | 30.9 | 224.1 | Up | 11:22:14 - 11:44:43 | 100 |
| Chiloquin | 11:33:30 | -32.9 | Dark | Down | 32.1 | 224.2 | Up | 11:22:15 - 11:44:44 | -1 |
| Klamath Falls | 11:33:29 | -32.9 | Dark | Down | 32.3 | 224.4 | Up | 11:22:15 - 11:44:44 | -34 |
| Fall River/Burney | 11:33:28 | -33.0 | Dark | Down | 32.9 | 225.4 | Up | 11:22:14 - 11:44:43 | -153 |
| Cedarville | 11:33:25 | -32.0 | Dark | Down | 31.9 | 226.3 | Up | 11:22:11 - 11:44:40 | -154 |
| Greenville | 11:33:27 | -32.8 | Dark | Down | 33.3 | 226.2 | Up | 11:22:13 - 11:44:42 | -251 |
| Gimple | 11:33:27 | -32.8 | Dark | Down | 33.3 | 226.3 | Up | 11:22:12 - 11:44:41 | -254 |
| Quincy | 11:33:27 | -32.9 | Dark | Down | 33.5 | 226.3 | Up | 11:22:13 - 11:44:42 | -269 |
| Portola | 11:33:26 | -32.6 | Dark | Down | 33.3 | 226.8 | Up | 11:22:11 - 11:44:40 | -298 |
| Reno | 11:33:24 | -32.1 | Dark | Down | 33.1 | 227.6 | Up | 11:22:10 - 11:44:39 | -347 |
| Carson City | 11:33:24 | -32.2 | Dark | Down | 33.3 | 227.8 | Up | 11:22:10 - 11:44:39 | -380 |
| Gardnerville | 11:33:24 | -32.2 | Dark | Down | 33.5 | 228.0 | Up | 11:22:09 - 11:44:38 | -404 |
| Yerington | 11:33:22 | -31.8 | Dark | Down | 33.1 | 228.5 | Up | 11:22:08 - 11:44:37 | -422 |
| Hawthorne | 11:33:21 | -31.5 | Dark | Down | 33.1 | 229.2 | Up | 11:22:06 - 11:44:35 | -484 |
| Lee Vining | 11:33:22 | -31.9 | Dark | Down | 33.8 | 229.1 | Up | 11:22:08 - 11:44:37 | -518 |
| Bishop | 11:33:20 | -31.5 | Dark | Down | 33.7 | 230.0 | Up | 11:22:06 - 11:44:35 | -602 |
| Beatty | 11:33:16 | -30.3 | Dark | Down | 33.0 | 231.8 | Up | 11:22:02 - 11:44:31 | -706 |
| Dunrhomin | 11:33:06 | -21.0 | Dark | Down | 23.6 | 240.2 | Low | 11:21:52 - 11:44:21 | -847 |
| Nikitin | 11:33:06 | -21.0 | Dark | Down | 23.7 | 240.3 | Low | 11:21:52 - 11:44:21 | -863 |
| CU-SBO | 11:33:06 | -21.1 | Dark | Down | 23.8 | 240.3 | Low | 11:21:52 - 11:44:21 | -866 |
| Wildwood | 11:33:22 | -32.2 | Dark | Down | 35.9 | 231.6 | Up | 11:22:07 - 11:44:36 | -903 |
| Laughlin/Bullhead City | 11:33:11 | -28.8 | Dark | Down | 32.6 | 234.6 | Up | 11:21:56 - 11:44:25 | -953 |
| Patrick | 11:33:09 | -28.2 | Dark | Down | 32.0 | 235.1 | Up | 11:21:54 - 11:44:23 | -955 |
| Idyllwild | 11:33:17 | -30.7 | Dark | Down | 34.9 | 233.5 | Up | 11:22:02 - 11:44:31 | -1011 |
| Lake Havasu City | 11:33:10 | -28.7 | Dark | Down | 32.9 | 235.2 | Up | 11:21:56 - 11:44:25 | -1028 |
| Calipatria | 11:33:14 | -29.8 | Dark | Down | 34.4 | 234.9 | Up | 11:21:59 - 11:44:28 | -1116 |
| Yuma | 11:33:11 | -29.1 | Dark | Down | 34.1 | 235.9 | Up | 11:21:57 - 11:44:26 | -1192 |
| George/Scottsdale | 11:33:06 | -26.7 | Dark | Down | 31.6 | 237.7 | Up | 11:21:52 - 11:44:21 | -1195 |
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 585912, (2028/10/22 11:37UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 30.91 161 Menkar 03:02:16.8 +04:05:21 2.5 9.18 135 PPM 185399 03:06:33.5 -06:05:19 4.9 1.05 130 PPM 185405 03:06:48.0 -05:03:04 8.4 0.14 130 PPM 185385 03:05:57.2 -05:05:06 9.5 0.09 130 585912 03:06:15.5 -05:02:28 12.9 130 Positions are for J2000
Event circumstances last updated at 2023/12/03 04:25:59 UT
Marc W. Buie, Southwest Research Institute