Event between 15VB166 and star GA1120:00903472 with event index number of 2571959
Geocentric closest approach at 2025/10/22 07:40:34 UTC
J2000 position of star is 05:00:52.4 +22:13:21
Equinox of date position of star is 05:02:18.4 +22:15:22
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon.
Moon is 1% illuminated.
Apparent brightness V=23.9
[RECON map]
Object is 32.3 AU from the Sun
and 31.7 AU from the Earth.
Apparent velocity is 14.6
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 610 seconds.
The 1-sigma cross-track error in the shadow position is
1600 km.
The sky-plane scale is
22968.3 km/arcsec.
The object has an absolute magnitude Hv=8.7
Diameter=111.2 km assuming a 5% albedo -- 7.6 sec chord
Diameter=45.4 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is 2:1E
Star training set for 15VB166, (2025/10/22 07:41UT) Object RA Dec mag sep mel Aldebaran 04:37:24.3 +16:33:33 0.8 8.20 147 Alnath 05:27:55.5 +28:37:37 1.6 8.58 135 102Iot Tau 05:04:38.4 +21:37:28 4.6 0.82 141 PPM 094029 05:05:54.8 +21:40:39 8.3 1.00 141 PPM 093959 05:01:52.3 +22:00:35 10.0 0.28 141 15VB166 05:02:25.4 +22:15:31 16.3 141 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
1.5 sigma about the mid-time.
The median site spacing is 27.0 km
RECON observability=1.0 and success probability=42.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 07:43:38 | -50.5 | Dark | Down | 42.8 | 108.5 | Up | 07:28:38 - 07:58:38 | 708 |
| Kelowna | 07:43:39 | -51.3 | Dark | Down | 43.6 | 108.7 | Up | 07:28:39 - 07:58:39 | 620 |
| Peachland | 07:43:41 | -51.4 | Dark | Down | 43.5 | 108.3 | Up | 07:28:41 - 07:58:41 | 619 |
| Victoria | 07:43:58 | -52.5 | Dark | Down | 41.6 | 103.9 | Up | 07:28:58 - 07:58:58 | 613 |
| Summerland | 07:43:41 | -51.6 | Dark | Down | 43.6 | 108.3 | Up | 07:28:41 - 07:58:41 | 605 |
| Penticton | 07:43:41 | -51.6 | Dark | Down | 43.7 | 108.3 | Up | 07:28:41 - 07:58:41 | 596 |
| Oliver | 07:43:43 | -52.0 | Dark | Down | 43.8 | 108.0 | Up | 07:28:43 - 07:58:43 | 567 |
| Anarchist Mountain Observatory | 07:43:43 | -52.2 | Dark | Down | 44.0 | 108.0 | Up | 07:28:43 - 07:58:43 | 549 |
| Okanogan | 07:43:47 | -52.8 | Dark | Down | 44.1 | 107.2 | Up | 07:28:47 - 07:58:47 | 501 |
| Sleaford | 07:42:43 | -47.6 | Dark | Down | 50.1 | 125.2 | Up | 07:27:43 - 07:57:43 | 498 |
| Brewster | 07:43:49 | -53.1 | Dark | Down | 44.0 | 106.8 | Up | 07:28:49 - 07:58:49 | 484 |
| Manson/Chelan | 07:43:51 | -53.3 | Dark | Down | 43.8 | 106.3 | Up | 07:28:51 - 07:58:51 | 476 |
| Wenatchee | 07:43:54 | -53.8 | Dark | Down | 43.9 | 105.7 | Up | 07:28:54 - 07:58:54 | 441 |
| Ellensburg | 07:43:56 | -54.2 | Dark | Down | 43.8 | 105.1 | Up | 07:28:56 - 07:58:56 | 412 |
| Yakima | 07:43:58 | -54.6 | Dark | Down | 43.9 | 104.7 | Up | 07:28:58 - 07:58:58 | 378 |
| Toppenish/White Swan | 07:43:59 | -54.8 | Dark | Down | 44.1 | 104.7 | Up | 07:28:59 - 07:58:59 | 355 |
| The Dalles | 07:44:05 | -55.6 | Dark | Down | 43.8 | 103.3 | Up | 07:29:05 - 07:59:05 | 311 |
| PNWRO | 07:43:55 | -55.2 | Dark | Down | 45.2 | 105.7 | Up | 07:28:55 - 07:58:55 | 284 |
| Maupin | 07:44:07 | -56.0 | Dark | Down | 43.9 | 103.0 | Up | 07:29:07 - 07:59:07 | 272 |
| Sisters | 07:44:12 | -56.9 | Dark | Down | 43.8 | 101.8 | Up | 07:29:12 - 07:59:12 | 211 |
| Bend | 07:44:13 | -57.1 | Dark | Down | 44.0 | 101.8 | Up | 07:29:13 - 07:59:13 | 183 |
| Oregon Observatory | 07:44:14 | -57.3 | Dark | Down | 44.0 | 101.5 | Up | 07:29:14 - 07:59:14 | 172 |
| Chiloquin | 07:44:21 | -58.6 | Dark | Down | 44.0 | 99.9 | Up | 07:29:21 - 07:59:21 | 69 |
| Klamath Falls | 07:44:23 | -58.9 | Dark | Down | 44.1 | 99.7 | Up | 07:29:23 - 07:59:23 | 36 |
| Cedarville | 07:44:20 | -59.6 | Dark | Down | 45.4 | 100.3 | Up | 07:29:20 - 07:59:20 | -72 |
| Fall River/Burney | 07:44:26 | -60.1 | Dark | Down | 44.6 | 98.8 | Up | 07:29:26 - 07:59:26 | -80 |
| Greenville | 07:44:29 | -61.0 | Dark | Down | 45.0 | 98.3 | Up | 07:29:29 - 07:59:29 | -175 |
| Gimple | 07:44:28 | -61.0 | Dark | Down | 45.1 | 98.4 | Up | 07:29:28 - 07:59:28 | -177 |
| Quincy | 07:44:30 | -61.2 | Dark | Down | 45.1 | 98.1 | Up | 07:29:30 - 07:59:30 | -193 |
| Portola | 07:44:29 | -61.4 | Dark | Down | 45.5 | 98.3 | Up | 07:29:29 - 07:59:29 | -219 |
| Reno | 07:44:27 | -61.6 | Dark | Down | 46.0 | 98.5 | Up | 07:29:27 - 07:59:27 | -262 |
| Carson City | 07:44:29 | -62.0 | Dark | Down | 46.1 | 98.2 | Up | 07:29:29 - 07:59:29 | -296 |
| Gardnerville | 07:44:30 | -62.2 | Dark | Down | 46.1 | 98.0 | Up | 07:29:30 - 07:59:30 | -320 |
| Yerington | 07:44:27 | -62.2 | Dark | Down | 46.6 | 98.5 | Up | 07:29:27 - 07:59:27 | -333 |
| Hawthorne | 07:44:27 | -62.6 | Dark | Down | 47.0 | 98.4 | Up | 07:29:27 - 07:59:27 | -392 |
| Lee Vining | 07:44:31 | -63.2 | Dark | Down | 46.8 | 97.4 | Up | 07:29:31 - 07:59:31 | -429 |
| Bishop | 07:44:31 | -63.8 | Dark | Down | 47.4 | 97.3 | Up | 07:29:31 - 07:59:31 | -507 |
| Dunrhomin | 07:43:23 | -58.2 | Dark | Down | 56.4 | 112.3 | Up | 07:28:23 - 07:58:23 | -598 |
| Beatty | 07:44:26 | -64.1 | Dark | Down | 48.7 | 98.0 | Up | 07:29:26 - 07:59:26 | -600 |
| Nikitin | 07:43:24 | -58.4 | Dark | Down | 56.5 | 112.0 | Up | 07:28:24 - 07:58:24 | -615 |
| CU-SBO | 07:43:25 | -58.5 | Dark | Down | 56.5 | 111.9 | Up | 07:28:25 - 07:58:25 | -619 |
| Wildwood | 07:44:44 | -67.0 | Dark | Down | 47.6 | 93.7 | Up | 07:29:44 - 07:59:44 | -812 |
| Patrick | 07:44:19 | -65.1 | Dark | Down | 51.2 | 98.3 | Up | 07:29:19 - 07:59:19 | -829 |
| Laughlin/Bullhead City | 07:44:23 | -65.5 | Dark | Down | 50.7 | 97.5 | Up | 07:29:23 - 07:59:23 | -832 |
| Lake Havasu City | 07:44:25 | -66.1 | Dark | Down | 51.0 | 96.9 | Up | 07:29:25 - 07:59:25 | -905 |
| Idyllwild | 07:44:38 | -67.2 | Dark | Down | 49.2 | 94.4 | Up | 07:29:38 - 07:59:38 | -906 |
| Calipatria | 07:44:35 | -67.7 | Dark | Down | 50.2 | 94.4 | Up | 07:29:35 - 07:59:35 | -1002 |
| George/Scottsdale | 07:44:16 | -66.3 | Dark | Down | 53.1 | 97.6 | Up | 07:29:16 - 07:59:16 | -1055 |
| Yuma | 07:44:32 | -67.9 | Dark | Down | 51.0 | 94.5 | Up | 07:29:32 - 07:59:32 | -1072 |
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 15VB166, (2025/10/22 07:41UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 8.20 147 Alnath 05:26:17.6 +28:36:23 1.6 8.58 135 102Iot Tau 05:03:05.8 +21:35:23 4.6 0.82 141 PPM 094029 05:04:22.1 +21:38:36 8.3 1.00 141 PPM 093959 05:00:19.5 +21:58:24 10.0 0.28 141 15VB166 05:00:52.4 +22:13:21 16.3 141 Positions are for J2000
Event circumstances last updated at 2023/11/14 03:56:45 UT
Marc W. Buie, Southwest Research Institute