Event between (307251) 02KW14 and star GA0600:26429611 with event index number of 2297741
Geocentric closest approach at 2028/08/11 04:15:39 UTC
J2000 position of star is 17:45:28.8 -28:04:54
Equinox of date position of star is 17:47:01.5 -28:05:23
Stellar brightness G=11.2,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 116 degrees from the moon.
Moon is 72% illuminated.
Apparent brightness V=22.0
[RECON map]
Object is 44.1 AU from the Sun
and 43.4 AU from the Earth.
Apparent velocity is 13.5
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 1702 seconds.
The 1-sigma cross-track error in the shadow position is
5825 km.
The sky-plane scale is
31511.0 km/arcsec.
The object has an absolute magnitude Hv=5.5
Diameter=457.1 km assuming a 5% albedo -- 35.3 sec chord
Diameter=186.6 km assuming a 30% albedo -- 14.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 307251, (2028/08/11 04:16UT) Object RA Dec mag sep mel Antares 16:31:10.0 -26:29:34 0.9 16.97 133 34Ups Sco 17:32:42.7 -37:18:56 2.7 9.72 119 3 Sgr 17:49:21.8 -27:50:20 4.2 0.52 116 PPM 267229 17:47:00.2 -28:20:07 8.5 0.25 116 PPM 267253 17:47:47.3 -28:05:53 9.6 0.11 116 307251 17:47:17.2 -28:05:28 11.2 116 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
0.5 sigma about the mid-time.
The median site spacing is 20.9 km
RECON observability=0.3 and success probability=1.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 04:15:34 | -13.1 | AT | Up | 9.2 | 190.5 | Really Low | 04:00:34 - 04:30:34 | 5206 |
| Kamloops | 04:16:49 | -7.3 | NT | Down | 11.2 | 177.9 | Really Low | 04:01:49 - 04:31:49 | 5102 |
| Kelowna | 04:16:40 | -8.2 | NT | Down | 12.0 | 178.6 | Really Low | 04:01:40 - 04:31:40 | 5091 |
| Peachland | 04:16:42 | -8.1 | NT | Down | 12.2 | 178.4 | Really Low | 04:01:42 - 04:31:42 | 5086 |
| Summerland | 04:16:41 | -8.3 | NT | Down | 12.3 | 178.5 | Really Low | 04:01:41 - 04:31:41 | 5084 |
| Penticton | 04:16:41 | -8.4 | NT | Down | 12.4 | 178.6 | Really Low | 04:01:41 - 04:31:41 | 5083 |
| Oliver | 04:16:41 | -8.6 | NT | Down | 12.7 | 178.6 | Really Low | 04:01:41 - 04:31:41 | 5074 |
| Anarchist Mountain Observatory | 04:16:40 | -8.8 | NT | Down | 12.9 | 178.7 | Really Low | 04:01:40 - 04:31:40 | 5072 |
| Okanogan | 04:16:41 | -9.0 | NT | Down | 13.5 | 178.5 | Really Low | 04:01:41 - 04:31:41 | 5053 |
| Brewster | 04:16:42 | -9.1 | NT | Down | 13.8 | 178.3 | Really Low | 04:01:42 - 04:31:42 | 5044 |
| Manson/Chelan | 04:16:49 | -9.0 | NT | Down | 14.0 | 178.0 | Really Low | 04:01:49 - 04:31:49 | 5035 |
| Wenatchee | 04:16:49 | -9.2 | NT | Down | 14.5 | 177.9 | Really Low | 04:01:49 - 04:31:49 | 5020 |
| Victoria | 04:17:01 | -6.9 | NT | Down | 13.2 | 175.1 | Really Low | 04:02:01 - 04:32:01 | 5017 |
| Ellensburg | 04:16:49 | -9.3 | NT | Down | 14.9 | 177.7 | Really Low | 04:01:49 - 04:31:49 | 5006 |
| Yakima | 04:16:49 | -9.5 | NT | Down | 15.3 | 177.6 | Really Low | 04:01:49 - 04:31:49 | 4994 |
| PNWRO | 04:16:37 | -10.8 | NT | Down | 15.9 | 179.1 | Really Low | 04:01:37 - 04:31:37 | 4993 |
| Toppenish/White Swan | 04:16:49 | -9.7 | NT | Down | 15.5 | 177.8 | Really Low | 04:01:49 - 04:31:49 | 4989 |
| The Dalles | 04:16:50 | -9.7 | NT | Down | 16.3 | 177.1 | Really Low | 04:01:50 - 04:31:50 | 4957 |
| Maupin | 04:16:49 | -10.0 | NT | Down | 16.7 | 177.2 | Really Low | 04:01:49 - 04:31:49 | 4945 |
| Sisters | 04:16:51 | -10.2 | NT | Down | 17.5 | 176.7 | Really Low | 04:01:51 - 04:31:51 | 4910 |
| Bend | 04:16:51 | -10.5 | NT | Down | 17.8 | 176.9 | Really Low | 04:01:51 - 04:31:51 | 4905 |
| Oregon Observatory | 04:16:52 | -10.5 | NT | Down | 18.0 | 176.8 | Really Low | 04:01:52 - 04:31:52 | 4898 |
| Dunrhomin | 04:15:13 | -21.9 | Dark | Up | 20.7 | 191.7 | Low | 04:00:13 - 04:30:13 | 4866 |
| Nikitin | 04:15:13 | -22.0 | Dark | Up | 20.9 | 191.7 | Low | 04:00:13 - 04:30:13 | 4859 |
| CU-SBO | 04:15:15 | -22.1 | Dark | Up | 21.0 | 191.6 | Low | 04:00:15 - 04:30:15 | 4856 |
| Chiloquin | 04:16:54 | -11.0 | NT | Down | 19.3 | 176.4 | Really Low | 04:01:54 - 04:31:54 | 4846 |
| Klamath Falls | 04:16:54 | -11.2 | NT | Down | 19.6 | 176.5 | Really Low | 04:01:54 - 04:31:54 | 4834 |
| Cedarville | 04:16:44 | -12.6 | AT | Down | 20.4 | 177.9 | Low | 04:01:44 - 04:31:44 | 4825 |
| Fall River/Burney | 04:16:52 | -12.1 | AT | Down | 20.8 | 176.8 | Low | 04:01:52 - 04:31:52 | 4792 |
| Gimple | 04:16:49 | -12.9 | AT | Down | 21.7 | 177.3 | Low | 04:01:49 - 04:31:49 | 4761 |
| Greenville | 04:16:49 | -12.9 | AT | Down | 21.7 | 177.2 | Low | 04:01:49 - 04:31:49 | 4761 |
| Portola | 04:16:49 | -13.3 | AT | Down | 22.1 | 177.6 | Low | 04:01:49 - 04:31:49 | 4753 |
| Quincy | 04:16:49 | -13.0 | AT | Down | 21.9 | 177.2 | Low | 04:01:49 - 04:31:49 | 4752 |
| Reno | 04:16:42 | -13.9 | AT | Down | 22.4 | 178.2 | Low | 04:01:42 - 04:31:42 | 4749 |
| Carson City | 04:16:42 | -14.1 | AT | Down | 22.7 | 178.2 | Low | 04:01:42 - 04:31:42 | 4734 |
| Yerington | 04:16:38 | -14.6 | AT | Down | 22.9 | 178.8 | Low | 04:01:38 - 04:31:38 | 4732 |
| Gardnerville | 04:16:41 | -14.3 | AT | Down | 23.0 | 178.3 | Low | 04:01:41 - 04:31:41 | 4724 |
| Hawthorne | 04:16:33 | -15.2 | AT | Down | 23.4 | 179.3 | Low | 04:01:33 - 04:31:33 | 4717 |
| Lee Vining | 04:16:37 | -15.2 | AT | Down | 23.9 | 178.9 | Low | 04:01:37 - 04:31:37 | 4688 |
| Bishop | 04:16:31 | -16.0 | AT | Down | 24.6 | 179.5 | Low | 04:01:31 - 04:31:31 | 4668 |
| Beatty | 04:16:20 | -17.3 | AT | Down | 25.0 | 181.1 | Low | 04:01:20 - 04:31:20 | 4662 |
| Patrick | 04:16:01 | -20.0 | Dark | Down | 26.4 | 183.9 | Low | 04:01:01 - 04:31:01 | 4615 |
| Laughlin/Bullhead City | 04:16:07 | -19.7 | Dark | Down | 26.7 | 183.2 | Low | 04:01:07 - 04:31:07 | 4597 |
| Lake Havasu City | 04:16:05 | -20.3 | Dark | Down | 27.3 | 183.5 | Low | 04:01:05 - 04:31:05 | 4565 |
| George/Scottsdale | 04:15:47 | -22.3 | Dark | Down | 28.0 | 185.9 | Low | 04:00:47 - 04:30:47 | 4543 |
| Idyllwild | 04:16:20 | -19.1 | Dark | Down | 28.2 | 181.2 | Low | 04:01:20 - 04:31:20 | 4507 |
| Wildwood | 04:16:33 | -17.7 | AT | Down | 27.8 | 179.3 | Low | 04:01:33 - 04:31:33 | 4505 |
| Calipatria | 04:16:12 | -20.3 | Dark | Down | 28.8 | 182.3 | Low | 04:01:12 - 04:31:12 | 4484 |
| Yuma | 04:16:06 | -21.1 | Dark | Down | 29.2 | 183.2 | Low | 04:01:06 - 04:31:06 | 4469 |
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 307251, (2028/08/11 04:16UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.97 133 34Ups Sco 17:30:45.8 -37:17:46 2.7 9.72 119 3 Sgr 17:47:33.6 -27:49:51 4.2 0.52 116 PPM 267229 17:45:11.6 -28:19:32 8.5 0.25 116 PPM 267253 17:45:59.0 -28:05:21 9.6 0.11 116 307251 17:45:28.8 -28:04:54 11.2 116 Positions are for J2000
Event circumstances last updated at 2024/06/24 21:33:44 UT
Marc W. Buie, Southwest Research Institute