Event between (87555) 00QB243 and star GA1020:00103472 with event index number of 1487548
Geocentric closest approach at 2025/09/15 05:26:49 UTC
J2000 position of star is 01:05:26.3 +12:39:15
Equinox of date position of star is 01:06:43.6 +12:47:05
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 73 degrees from the moon.
Moon is 41% illuminated.
Apparent brightness V=24.1
[RECON map]
Object is 35.1 AU from the Sun
and 34.2 AU from the Earth.
Apparent velocity is 22.4
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 240 seconds.
The 1-sigma cross-track error in the shadow position is
3062 km.
The sky-plane scale is
24813.6 km/arcsec.
The object has an absolute magnitude Hv=8.6
Diameter=138.0 km assuming a 5% albedo -- 5.1 sec chord
Diameter=56.4 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
Star training set for 87555, (2025/09/15 05:27UT) Object RA Dec mag sep mel Algenib 00:14:33.8 +15:19:35 2.8 12.91 83 75 Psc 01:07:55.0 +13:05:35 6.1 0.41 72 PPM 117031 01:06:55.4 +12:36:21 8.6 0.19 73 PPM 117025 01:06:33.7 +12:58:09 10.2 0.19 73 87555 01:06:47.5 +12:47:29 16.9 72 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
3.8 sigma about the mid-time.
The median site spacing is 21.1 km
RECON observability=1.0 and success probability=12.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 05:28:17 | -27.7 | Dark | Down | 28.5 | 105.6 | Low | 05:13:17 - 05:43:17 | -938 |
| Victoria | 05:28:20 | -27.9 | Dark | Down | 27.1 | 101.9 | Low | 05:13:20 - 05:43:20 | -1000 |
| Peachland | 05:28:20 | -28.7 | Dark | Down | 29.1 | 105.6 | Low | 05:13:20 - 05:43:20 | -1000 |
| Kelowna | 05:28:19 | -28.7 | Dark | Down | 29.2 | 105.9 | Low | 05:13:19 - 05:43:19 | -1002 |
| Summerland | 05:28:20 | -28.8 | Dark | Down | 29.2 | 105.6 | Low | 05:13:20 - 05:43:20 | -1010 |
| Penticton | 05:28:20 | -28.9 | Dark | Down | 29.3 | 105.7 | Low | 05:13:20 - 05:43:20 | -1017 |
| Oliver | 05:28:20 | -29.2 | Dark | Down | 29.4 | 105.5 | Low | 05:13:20 - 05:43:20 | -1036 |
| Anarchist Mountain Observatory | 05:28:20 | -29.4 | Dark | Down | 29.5 | 105.6 | Low | 05:13:20 - 05:43:20 | -1050 |
| Okanogan | 05:28:20 | -29.8 | Dark | Down | 29.6 | 105.0 | Low | 05:13:20 - 05:43:20 | -1086 |
| Brewster | 05:28:20 | -29.9 | Dark | Down | 29.5 | 104.7 | Low | 05:13:20 - 05:43:20 | -1099 |
| Manson/Chelan | 05:28:20 | -29.9 | Dark | Down | 29.3 | 104.3 | Low | 05:13:20 - 05:43:20 | -1106 |
| Wenatchee | 05:28:20 | -30.1 | Dark | Down | 29.3 | 103.9 | Low | 05:13:20 - 05:43:20 | -1137 |
| Ellensburg | 05:28:20 | -30.3 | Dark | Down | 29.3 | 103.5 | Low | 05:13:20 - 05:43:20 | -1164 |
| Yakima | 05:28:20 | -30.6 | Dark | Down | 29.4 | 103.2 | Low | 05:13:20 - 05:43:20 | -1196 |
| Toppenish/White Swan | 05:28:20 | -30.8 | Dark | Down | 29.5 | 103.3 | Low | 05:13:20 - 05:43:20 | -1216 |
| Sleaford | 05:27:48 | -31.7 | Dark | Up | 36.2 | 119.8 | Up | 05:12:48 - 05:42:48 | -1220 |
| The Dalles | 05:28:20 | -31.0 | Dark | Down | 29.2 | 102.2 | Low | 05:13:20 - 05:43:20 | -1269 |
| PNWRO | 05:28:20 | -31.8 | Dark | Down | 30.6 | 104.3 | Up | 05:13:20 - 05:43:20 | -1271 |
| Maupin | 05:28:20 | -31.3 | Dark | Down | 29.3 | 102.0 | Low | 05:13:20 - 05:43:20 | -1306 |
| Chiloquin | 05:28:53 | -32.8 | Dark | Down | 29.4 | 100.1 | Low | 05:13:53 - 05:43:53 | -1358 |
| Sisters | 05:28:20 | -31.7 | Dark | Down | 29.2 | 101.2 | Low | 05:13:20 - 05:43:20 | -1379 |
| Klamath Falls | 05:28:54 | -33.1 | Dark | Down | 29.5 | 100.0 | Low | 05:13:54 - 05:43:54 | -1382 |
| Bend | 05:28:20 | -32.0 | Dark | Down | 29.4 | 101.2 | Low | 05:13:20 - 05:43:20 | -1404 |
| Oregon Observatory | 05:28:20 | -32.0 | Dark | Down | 29.3 | 101.0 | Low | 05:13:20 - 05:43:20 | -1418 |
| Fall River/Burney | 05:28:58 | -34.1 | Dark | Down | 30.0 | 99.6 | Low | 05:13:58 - 05:43:58 | -1468 |
| Cedarville | 05:28:54 | -34.4 | Dark | Down | 30.8 | 100.8 | Up | 05:13:54 - 05:43:54 | -1471 |
| Greenville | 05:29:01 | -34.9 | Dark | Down | 30.5 | 99.4 | Up | 05:14:01 - 05:44:01 | -1540 |
| Gimple | 05:29:00 | -35.0 | Dark | Down | 30.5 | 99.5 | Up | 05:14:00 - 05:44:00 | -1542 |
| Quincy | 05:29:01 | -35.1 | Dark | Down | 30.5 | 99.3 | Up | 05:14:01 - 05:44:01 | -1553 |
| Portola | 05:29:01 | -35.4 | Dark | Down | 30.9 | 99.6 | Up | 05:14:01 - 05:44:01 | -1575 |
| Reno | 05:29:01 | -36.0 | Dark | Down | 31.4 | 99.9 | Up | 05:14:01 - 05:44:01 | -1612 |
| Carson City | 05:29:02 | -36.3 | Dark | Down | 31.5 | 99.7 | Up | 05:14:02 - 05:44:02 | -1637 |
| Gardnerville | 05:29:03 | -36.4 | Dark | Down | 31.6 | 99.6 | Up | 05:14:03 - 05:44:03 | -1655 |
| Yerington | 05:29:02 | -36.7 | Dark | Down | 32.0 | 100.0 | Up | 05:14:02 - 05:44:02 | -1669 |
| Hawthorne | 05:29:03 | -37.4 | Dark | Down | 32.5 | 100.1 | Up | 05:14:03 - 05:44:03 | -1717 |
| Lee Vining | 05:29:06 | -37.5 | Dark | Down | 32.2 | 99.4 | Up | 05:14:06 - 05:44:06 | -1741 |
| Bishop | 05:29:07 | -38.3 | Dark | Down | 32.9 | 99.6 | Up | 05:14:07 - 05:44:07 | -1806 |
| Beatty | 05:29:06 | -39.6 | Dark | Down | 34.3 | 100.4 | Up | 05:14:06 - 05:44:06 | -1890 |
| Dunrhomin | 05:28:20 | -42.4 | Dark | Down | 41.9 | 112.0 | Up | 05:13:20 - 05:43:20 | -2021 |
| Nikitin | 05:28:20 | -42.6 | Dark | Down | 42.0 | 111.8 | Up | 05:13:20 - 05:43:20 | -2035 |
| CU-SBO | 05:28:20 | -42.6 | Dark | Down | 41.9 | 111.7 | Up | 05:13:20 - 05:43:20 | -2038 |
| Wildwood | 05:29:19 | -40.4 | Dark | Down | 33.3 | 97.3 | Up | 05:14:19 - 05:44:19 | -2040 |
| Laughlin/Bullhead City | 05:29:08 | -42.0 | Dark | Down | 36.3 | 100.7 | Up | 05:14:08 - 05:44:08 | -2088 |
| Patrick | 05:29:05 | -42.3 | Dark | Down | 36.9 | 101.4 | Up | 05:14:05 - 05:44:05 | -2091 |
| Idyllwild | 05:29:17 | -41.8 | Dark | Down | 34.9 | 98.3 | Up | 05:14:17 - 05:44:17 | -2127 |
| Lake Havasu City | 05:29:10 | -42.7 | Dark | Down | 36.7 | 100.4 | Up | 05:14:10 - 05:44:10 | -2147 |
| Calipatria | 05:29:16 | -43.0 | Dark | Down | 35.9 | 98.6 | Up | 05:14:16 - 05:44:16 | -2213 |
| Yuma | 05:29:17 | -43.8 | Dark | Down | 36.7 | 98.9 | Up | 05:14:17 - 05:44:17 | -2276 |
| George/Scottsdale | 05:29:07 | -44.6 | Dark | Down | 38.8 | 101.5 | Up | 05:14:07 - 05:44:07 | -2288 |
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 87555, (2025/09/15 05:27UT) Object RA Dec mag sep mel Algenib 00:13:14.2 +15:11:01 2.8 12.91 83 75 Psc 01:06:33.7 +12:57:22 6.1 0.41 72 PPM 117031 01:05:34.2 +12:28:07 8.6 0.19 73 PPM 117025 01:05:12.4 +12:49:55 10.2 0.19 73 87555 01:05:26.3 +12:39:15 16.9 73 Positions are for J2000
Event circumstances last updated at 2024/06/18 02:54:02 UT
Marc W. Buie, Southwest Research Institute