Event between (85627) 98HP151 and star GA0640:18738138 with event index number of 2407508
Geocentric closest approach at 2025/07/25 06:34:30 UTC
J2000 position of star is 17:42:36.7 -24:10:27
Equinox of date position of star is 17:44:06.6 -24:11:03
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=23.4
[RECON map]
Object is 40.9 AU from the Sun
and 40.1 AU from the Earth.
Apparent velocity is 18.8
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 360 seconds.
The 1-sigma cross-track error in the shadow position is
1740 km.
The sky-plane scale is
29086.0 km/arcsec.
The object has an absolute magnitude Hv=7.2
Diameter=199.5 km assuming a 5% albedo -- 11.4 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 85627, (2025/07/25 06:35UT) Object RA Dec mag sep mel Antares 16:30:58.7 -26:29:11 0.9 16.68 121 35Eta Oph 17:11:50.8 -15:45:17 2.6 11.34 128 PPM 267309 17:49:18.3 -22:29:06 6.1 2.07 138 PPM 267136 17:42:23.6 -23:50:51 8.2 0.53 137 PPM 267169 17:44:04.5 -24:18:05 9.6 0.12 137 85627 17:44:10.6 -24:11:04 16.8 138 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
2.5 sigma about the mid-time.
The median site spacing is 18.0 km
RECON observability=0.6 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 | 06:33:46 | -16.7 | AT | Down | 13.9 | 194.7 | Really Low | 06:18:46 - 06:48:46 | 11883 |
| Kelowna | 06:33:41 | -17.7 | AT | Down | 14.5 | 195.6 | Really Low | 06:18:41 - 06:48:41 | 11854 |
| Peachland | 06:33:41 | -17.7 | AT | Down | 14.7 | 195.3 | Really Low | 06:18:41 - 06:48:41 | 11852 |
| Summerland | 06:33:42 | -17.9 | AT | Down | 14.8 | 195.4 | Really Low | 06:18:42 - 06:48:42 | 11847 |
| Penticton | 06:33:41 | -18.0 | AT | Down | 14.9 | 195.5 | Really Low | 06:18:41 - 06:48:41 | 11844 |
| Oliver | 06:33:41 | -18.3 | Dark | Down | 15.2 | 195.5 | Really Low | 06:18:41 - 06:48:41 | 11833 |
| Victoria | 06:33:56 | -17.9 | AT | Down | 16.4 | 192.0 | Really Low | 06:18:56 - 06:48:56 | 11830 |
| Anarchist Mountain Observatory | 06:33:41 | -18.5 | Dark | Down | 15.3 | 195.7 | Really Low | 06:18:41 - 06:48:41 | 11827 |
| Okanogan | 06:33:40 | -19.1 | Dark | Down | 16.0 | 195.5 | Really Low | 06:18:40 - 06:48:40 | 11806 |
| Sleaford | 06:33:00 | -17.9 | AT | Down | 9.4 | 207.4 | Really Low | 06:18:00 - 06:48:00 | 11802 |
| Brewster | 06:33:41 | -19.3 | Dark | Down | 16.3 | 195.4 | Really Low | 06:18:41 - 06:48:41 | 11798 |
| Manson/Chelan | 06:33:41 | -19.4 | Dark | Down | 16.5 | 195.1 | Really Low | 06:18:41 - 06:48:41 | 11793 |
| Wenatchee | 06:33:42 | -19.7 | Dark | Down | 17.0 | 194.9 | Really Low | 06:18:42 - 06:48:42 | 11777 |
| Ellensburg | 06:33:43 | -20.1 | Dark | Down | 17.5 | 194.8 | Really Low | 06:18:43 - 06:48:43 | 11764 |
| Yakima | 06:33:41 | -20.4 | Dark | Down | 17.9 | 194.8 | Really Low | 06:18:41 - 06:48:41 | 11749 |
| Toppenish/White Swan | 06:33:40 | -20.7 | Dark | Down | 18.0 | 194.9 | Really Low | 06:18:40 - 06:48:40 | 11740 |
| PNWRO | 06:33:34 | -21.4 | Dark | Down | 18.1 | 196.4 | Really Low | 06:18:34 - 06:48:34 | 11717 |
| The Dalles | 06:33:42 | -21.2 | Dark | Down | 18.9 | 194.3 | Really Low | 06:18:42 - 06:48:42 | 11714 |
| Maupin | 06:33:42 | -21.6 | Dark | Down | 19.3 | 194.4 | Really Low | 06:18:42 - 06:48:42 | 11697 |
| Sisters | 06:33:41 | -22.2 | Dark | Down | 20.3 | 194.0 | Low | 06:18:41 - 06:48:41 | 11665 |
| Bend | 06:33:41 | -22.5 | Dark | Down | 20.5 | 194.3 | Low | 06:18:41 - 06:48:41 | 11654 |
| Oregon Observatory | 06:33:42 | -22.6 | Dark | Down | 20.6 | 194.2 | Low | 06:18:42 - 06:48:42 | 11648 |
| Chiloquin | 06:33:42 | -23.7 | Dark | Down | 22.0 | 193.9 | Low | 06:18:42 - 06:48:42 | 11593 |
| Klamath Falls | 06:33:41 | -24.0 | Dark | Down | 22.3 | 194.0 | Low | 06:18:41 - 06:48:41 | 11578 |
| Cedarville | 06:33:34 | -25.2 | Dark | Down | 22.7 | 195.6 | Low | 06:18:34 - 06:48:34 | 11537 |
| Fall River/Burney | 06:33:39 | -25.2 | Dark | Down | 23.4 | 194.5 | Low | 06:18:39 - 06:48:39 | 11522 |
| Greenville | 06:33:34 | -26.2 | Dark | Down | 24.2 | 195.0 | Low | 06:18:34 - 06:48:34 | 11476 |
| Gimple | 06:33:34 | -26.2 | Dark | Down | 24.2 | 195.1 | Low | 06:18:34 - 06:48:34 | 11475 |
| Quincy | 06:33:36 | -26.3 | Dark | Down | 24.4 | 195.0 | Low | 06:18:36 - 06:48:36 | 11466 |
| Portola | 06:33:34 | -26.6 | Dark | Down | 24.4 | 195.5 | Low | 06:18:34 - 06:48:34 | 11457 |
| Reno | 06:33:30 | -27.1 | Dark | Down | 24.5 | 196.2 | Low | 06:18:30 - 06:48:30 | 11440 |
| Carson City | 06:33:30 | -27.4 | Dark | Down | 24.9 | 196.2 | Low | 06:18:30 - 06:48:30 | 11422 |
| Gardnerville | 06:33:30 | -27.6 | Dark | Down | 25.1 | 196.3 | Low | 06:18:30 - 06:48:30 | 11410 |
| Yerington | 06:33:27 | -27.8 | Dark | Down | 24.9 | 196.9 | Low | 06:18:27 - 06:48:27 | 11408 |
| Hawthorne | 06:33:24 | -28.4 | Dark | Down | 25.2 | 197.4 | Low | 06:18:24 - 06:48:24 | 11380 |
| Lee Vining | 06:33:26 | -28.7 | Dark | Down | 25.9 | 197.1 | Low | 06:18:26 - 06:48:26 | 11355 |
| Dunrhomin | 06:32:32 | -29.6 | Dark | Down | 19.6 | 209.5 | Really Low | 06:17:32 - 06:47:32 | 11319 |
| Bishop | 06:33:22 | -29.5 | Dark | Down | 26.3 | 197.8 | Low | 06:18:22 - 06:48:22 | 11318 |
| Nikitin | 06:32:32 | -29.8 | Dark | Down | 19.7 | 209.5 | Really Low | 06:17:32 - 06:47:32 | 11310 |
| CU-SBO | 06:32:33 | -29.9 | Dark | Down | 19.8 | 209.4 | Really Low | 06:17:33 - 06:47:33 | 11307 |
| Beatty | 06:33:15 | -30.4 | Dark | Down | 26.3 | 199.5 | Low | 06:18:15 - 06:48:15 | 11279 |
| Patrick | 06:32:59 | -32.6 | Dark | Down | 26.9 | 202.5 | Low | 06:17:59 - 06:47:59 | 11168 |
| Laughlin/Bullhead City | 06:33:03 | -32.7 | Dark | Down | 27.3 | 201.9 | Low | 06:18:03 - 06:48:03 | 11161 |
| Wildwood | 06:33:19 | -32.4 | Dark | Down | 29.5 | 198.2 | Low | 06:18:19 - 06:48:19 | 11135 |
| Lake Havasu City | 06:33:00 | -33.4 | Dark | Down | 27.9 | 202.2 | Low | 06:18:00 - 06:48:00 | 11120 |
| Idyllwild | 06:33:11 | -33.4 | Dark | Down | 29.3 | 200.1 | Low | 06:18:11 - 06:48:11 | 11099 |
| Calipatria | 06:33:04 | -34.3 | Dark | Down | 29.5 | 201.3 | Low | 06:18:04 - 06:48:04 | 11050 |
| George/Scottsdale | 06:32:48 | -34.7 | Dark | Down | 27.8 | 204.7 | Low | 06:17:48 - 06:47:48 | 11046 |
| Yuma | 06:33:00 | -35.0 | Dark | Down | 29.6 | 202.3 | Low | 06:18:00 - 06:48:00 | 11015 |
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, (2025/07/25 06:35UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.68 121 35Eta Oph 17:10:22.7 -15:43:29 2.6 11.34 128 PPM 267309 17:47:45.6 -22:28:40 6.1 2.07 138 PPM 267136 17:40:49.9 -23:50:10 8.2 0.53 137 PPM 267169 17:42:30.5 -24:17:27 9.6 0.12 137 85627 17:42:36.7 -24:10:27 16.8 137 Positions are for J2000
Event circumstances last updated at 2024/06/18 02:51:30 UT
Marc W. Buie, Southwest Research Institute