Event between (85627) 98HP151 and star GA0640:23394650 with event index number of 2408587
Geocentric closest approach at 2028/04/23 10:35:01 UTC
J2000 position of star is 18:08:43.4 -24:18:04
Equinox of date position of star is 18:10:13.5 -24:17:44
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 106 degrees from the moon.
Moon is 2% illuminated.
Apparent brightness V=23.4
[RECON map]
Object is 40.8 AU from the Sun
and 40.3 AU from the Earth.
Apparent velocity is 10.2
km/sec on the sky relative to the star, or,
1.3 arcsec/hr.
The 1-sigma error in the time of the event is 1219 seconds.
The 1-sigma cross-track error in the shadow position is
5458 km.
The sky-plane scale is
29195.6 km/arcsec.
The object has an absolute magnitude Hv=7.2
Diameter=199.5 km assuming a 5% albedo -- 20.9 sec chord
Diameter=81.5 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is CLASSICAL
Star training set for 85627, (2028/04/23 10:35UT) Object RA Dec mag sep mel Antares 16:31:08.9 -26:29:32 0.9 22.50 128 Nunki 18:57:01.1 -26:15:32 2.0 10.70 96 11 Sgr 18:13:27.1 -23:41:34 4.5 0.91 105 PPM 267950 18:11:01.6 -23:58:53 7.9 0.34 106 PPM 267933 18:10:38.2 -24:21:05 8.6 0.07 106 85627 18:10:27.6 -24:17:40 16.9 105 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
0.7 sigma about the mid-time.
The median site spacing is 14.8 km
RECON observability=0.5 and success probability=0.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:35:13 | -10.6 | NT | Down | 13.3 | 173.2 | Really Low | 10:20:13 - 10:50:13 | 12665 |
| Kamloops | 10:36:46 | -17.9 | AT | Down | 12.7 | 160.1 | Really Low | 10:21:46 - 10:51:46 | 12587 |
| Kelowna | 10:36:41 | -18.1 | Dark | Down | 13.6 | 160.8 | Really Low | 10:21:41 - 10:51:41 | 12568 |
| Peachland | 10:36:42 | -18.4 | Dark | Down | 13.7 | 160.6 | Really Low | 10:21:42 - 10:51:42 | 12563 |
| Summerland | 10:36:41 | -18.4 | Dark | Down | 13.8 | 160.6 | Really Low | 10:21:41 - 10:51:41 | 12559 |
| Penticton | 10:36:41 | -18.4 | Dark | Down | 13.9 | 160.7 | Really Low | 10:21:41 - 10:51:41 | 12558 |
| Oliver | 10:36:43 | -18.7 | Dark | Down | 14.3 | 160.7 | Really Low | 10:21:43 - 10:51:43 | 12547 |
| Anarchist Mountain Observatory | 10:36:41 | -18.7 | Dark | Down | 14.5 | 160.9 | Really Low | 10:21:41 - 10:51:41 | 12543 |
| Okanogan | 10:36:48 | -19.3 | Dark | Down | 15.0 | 160.6 | Really Low | 10:21:48 - 10:51:48 | 12520 |
| Brewster | 10:36:48 | -19.6 | Dark | Down | 15.2 | 160.4 | Really Low | 10:21:48 - 10:51:48 | 12509 |
| Manson/Chelan | 10:36:53 | -19.9 | Dark | Down | 15.4 | 160.1 | Really Low | 10:21:53 - 10:51:53 | 12500 |
| Victoria | 10:37:09 | -20.8 | Dark | Down | 14.0 | 157.3 | Really Low | 10:22:09 - 10:52:09 | 12498 |
| Wenatchee | 10:36:55 | -20.3 | Dark | Down | 15.8 | 159.9 | Really Low | 10:21:55 - 10:51:55 | 12482 |
| Ellensburg | 10:36:55 | -20.7 | Dark | Down | 16.1 | 159.7 | Really Low | 10:21:55 - 10:51:55 | 12467 |
| Yakima | 10:36:59 | -21.1 | Dark | Down | 16.5 | 159.6 | Really Low | 10:21:59 - 10:51:59 | 12452 |
| Toppenish/White Swan | 10:36:58 | -21.1 | Dark | Down | 16.7 | 159.7 | Really Low | 10:21:58 - 10:51:58 | 12445 |
| PNWRO | 10:36:50 | -20.7 | Dark | Down | 17.4 | 161.1 | Really Low | 10:21:50 - 10:51:50 | 12441 |
| The Dalles | 10:37:07 | -22.1 | Dark | Down | 17.3 | 159.0 | Really Low | 10:22:07 - 10:52:07 | 12410 |
| Maupin | 10:37:07 | -22.3 | Dark | Down | 17.7 | 159.0 | Really Low | 10:22:07 - 10:52:07 | 12394 |
| Sisters | 10:37:11 | -23.2 | Dark | Down | 18.4 | 158.5 | Really Low | 10:22:11 - 10:52:11 | 12356 |
| Bend | 10:37:10 | -23.3 | Dark | Down | 18.7 | 158.7 | Really Low | 10:22:10 - 10:52:10 | 12348 |
| Oregon Observatory | 10:37:14 | -23.5 | Dark | Down | 18.8 | 158.5 | Really Low | 10:22:14 - 10:52:14 | 12340 |
| Chiloquin | 10:37:21 | -24.6 | Dark | Down | 19.9 | 158.0 | Really Low | 10:22:21 - 10:52:21 | 12281 |
| Klamath Falls | 10:37:20 | -24.9 | Dark | Down | 20.3 | 158.0 | Low | 10:22:20 - 10:52:20 | 12266 |
| Cedarville | 10:37:10 | -24.6 | Dark | Down | 21.3 | 159.4 | Low | 10:22:10 - 10:52:10 | 12247 |
| Dunrhomin | 10:35:20 | -17.1 | AT | Down | 25.2 | 173.4 | Low | 10:20:20 - 10:50:20 | 12232 |
| Nikitin | 10:35:20 | -17.2 | AT | Down | 25.3 | 173.4 | Low | 10:20:20 - 10:50:20 | 12224 |
| CU-SBO | 10:35:22 | -17.3 | AT | Down | 25.4 | 173.3 | Low | 10:20:22 - 10:50:22 | 12221 |
| Fall River/Burney | 10:37:23 | -25.5 | Dark | Down | 21.5 | 158.2 | Low | 10:22:23 - 10:52:23 | 12215 |
| Gimple | 10:37:21 | -25.9 | Dark | Down | 22.5 | 158.6 | Low | 10:22:21 - 10:52:21 | 12176 |
| Greenville | 10:37:21 | -26.0 | Dark | Down | 22.4 | 158.5 | Low | 10:22:21 - 10:52:21 | 12176 |
| Quincy | 10:37:20 | -26.1 | Dark | Down | 22.6 | 158.5 | Low | 10:22:20 - 10:52:20 | 12166 |
| Portola | 10:37:19 | -26.0 | Dark | Down | 22.9 | 158.9 | Low | 10:22:19 - 10:52:19 | 12164 |
| Reno | 10:37:13 | -25.8 | Dark | Down | 23.3 | 159.5 | Low | 10:22:13 - 10:52:13 | 12156 |
| Carson City | 10:37:15 | -26.1 | Dark | Down | 23.6 | 159.4 | Low | 10:22:15 - 10:52:15 | 12138 |
| Yerington | 10:37:10 | -25.9 | Dark | Down | 24.0 | 160.0 | Low | 10:22:10 - 10:52:10 | 12133 |
| Gardnerville | 10:37:14 | -26.2 | Dark | Down | 23.9 | 159.4 | Low | 10:22:14 - 10:52:14 | 12126 |
| Hawthorne | 10:37:08 | -25.9 | Dark | Down | 24.6 | 160.4 | Low | 10:22:08 - 10:52:08 | 12113 |
| Lee Vining | 10:37:12 | -26.6 | Dark | Down | 25.0 | 159.9 | Low | 10:22:12 - 10:52:12 | 12081 |
| Bishop | 10:37:08 | -26.6 | Dark | Down | 25.7 | 160.5 | Low | 10:22:08 - 10:52:08 | 12054 |
| Beatty | 10:36:58 | -26.0 | Dark | Down | 26.6 | 162.0 | Low | 10:21:58 - 10:51:58 | 12040 |
| Patrick | 10:36:09 | -25.3 | Dark | Down | 28.6 | 164.4 | Low | 10:21:09 - 10:51:09 | 11976 |
| Laughlin/Bullhead City | 10:36:43 | -25.8 | Dark | Down | 28.7 | 163.8 | Low | 10:21:43 - 10:51:43 | 11955 |
| Lake Havasu City | 10:36:42 | -26.1 | Dark | Down | 29.4 | 163.9 | Low | 10:21:42 - 10:51:42 | 11918 |
| George/Scottsdale | 10:36:09 | -25.1 | Dark | Down | 30.7 | 166.2 | Up | 10:21:09 - 10:51:09 | 11883 |
| Wildwood | 10:37:19 | -28.9 | Dark | Down | 28.7 | 159.7 | Low | 10:22:19 - 10:52:19 | 11871 |
| Idyllwild | 10:37:05 | -28.1 | Dark | Down | 29.6 | 161.5 | Low | 10:22:05 - 10:52:05 | 11863 |
| Calipatria | 10:36:54 | -27.7 | Dark | Down | 30.5 | 162.5 | Up | 10:21:54 - 10:51:54 | 11832 |
| Yuma | 10:36:50 | -27.4 | Dark | Down | 31.1 | 163.4 | Up | 10:21:50 - 10:51:50 | 11811 |
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 85627, (2028/04/23 10:35UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 22.50 128 Nunki 18:55:15.9 -26:17:49 2.0 10.70 96 11 Sgr 18:11:43.4 -23:42:05 4.5 0.91 105 PPM 267950 18:09:17.7 -23:59:19 7.9 0.34 106 PPM 267933 18:08:54.1 -24:21:29 8.6 0.07 106 85627 18:08:43.4 -24:18:04 16.9 106 Positions are for J2000
Event circumstances last updated at 2024/06/23 21:33:16 UT
Marc W. Buie, Southwest Research Institute