Event between 15VN172 and star GA1100:00540904 with event index number of 2748470
Geocentric closest approach at 2028/12/28 02:45:54 UTC
J2000 position of star is 04:05:13.9 +21:22:57
Equinox of date position of star is 04:06:32.2 +21:26:29
Stellar brightness G=13.0,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 11 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=24.2
[RECON map]
TNO is 47.7 AU from the Sun
and 46.8 AU from the Earth.
The TNO is moving 21.1
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 727 seconds.
The 1-sigma cross-track error in the shadow position is
5878 km.
The sky-plane scale is
33972.8 km/arcsec.
The TNO has an absolute magnitude Hv=7.4
Diameter=200.5 km assuming a 5% albedo -- 9.5 sec chord
Diameter=81.8 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 15VN172, (2028/12/28 02:46UT) Object RA Dec mag sep mel Aldebaran 04:37:35.2 +16:33:56 0.8 8.74 19 44Zet Per 03:55:57.7 +31:58:02 2.8 10.79 12 43Ome1Tau 04:10:51.5 +19:41:01 5.5 2.00 12 PPM 093205 04:05:40.3 +21:08:55 8.3 0.43 10 PPM 093242 04:07:29.6 +21:16:58 8.7 0.22 11 15VN172 04:06:56.4 +21:27:34 13.0 11 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
1.2 sigma about the mid-time.
The median site spacing is 26.4 km
RECON observability=1.0 and success probability=6.2%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 02:47:34 | -24.7 | Dark | Up | 45.7 | 115.3 | Up | 02:32:34 - 03:02:34 | 7224 |
| Victoria | 02:47:48 | -22.4 | Dark | Up | 44.8 | 110.3 | Up | 02:32:48 - 03:02:48 | 7143 |
| Kelowna | 02:47:34 | -25.2 | Dark | Up | 46.6 | 115.5 | Up | 02:32:34 - 03:02:34 | 7137 |
| Peachland | 02:47:35 | -25.0 | Dark | Up | 46.5 | 115.1 | Up | 02:32:35 - 03:02:35 | 7136 |
| Summerland | 02:47:36 | -25.0 | Dark | Up | 46.6 | 115.0 | Up | 02:32:36 - 03:02:36 | 7122 |
| Penticton | 02:47:36 | -25.1 | Dark | Up | 46.7 | 115.1 | Up | 02:32:36 - 03:02:36 | 7114 |
| Oliver | 02:47:37 | -25.0 | Dark | Up | 46.8 | 114.8 | Up | 02:32:37 - 03:02:37 | 7086 |
| Anarchist Mountain Observatory | 02:47:37 | -25.1 | Dark | Up | 47.0 | 114.8 | Up | 02:32:37 - 03:02:37 | 7068 |
| Tonasket | 02:47:39 | -25.1 | Dark | Up | 47.1 | 114.4 | Up | 02:32:39 - 03:02:39 | 7045 |
| Okanogan | 02:47:41 | -24.9 | Dark | Up | 47.2 | 113.9 | Up | 02:32:41 - 03:02:41 | 7023 |
| Brewster | 02:47:41 | -24.7 | Dark | Up | 47.1 | 113.5 | Up | 02:32:41 - 03:02:41 | 7007 |
| Manson/Chelan | 02:47:43 | -24.5 | Dark | Up | 47.0 | 112.9 | Up | 02:32:43 - 03:02:43 | 7001 |
| Sleaford | 02:46:53 | -33.6 | Dark | Up | 52.3 | 133.6 | Up | 02:31:53 - 03:01:53 | 6975 |
| Wenatchee | 02:47:45 | -24.3 | Dark | Up | 47.1 | 112.3 | Up | 02:32:45 - 03:02:45 | 6967 |
| Ellensburg | 02:47:48 | -24.1 | Dark | Up | 47.1 | 111.6 | Up | 02:32:48 - 03:02:48 | 6941 |
| Yakima | 02:47:48 | -24.0 | Dark | Up | 47.2 | 111.2 | Up | 02:32:48 - 03:02:48 | 6908 |
| Toppenish/White Swan | 02:47:49 | -24.1 | Dark | Up | 47.4 | 111.2 | Up | 02:32:49 - 03:02:49 | 6886 |
| Goldendale | 02:47:52 | -23.7 | Dark | Up | 47.4 | 110.2 | Up | 02:32:52 - 03:02:52 | 6854 |
| The Dalles | 02:47:53 | -23.4 | Dark | Up | 47.2 | 109.6 | Up | 02:32:53 - 03:02:53 | 6846 |
| PNWRO | 02:47:46 | -25.1 | Dark | Up | 48.5 | 112.3 | Up | 02:32:46 - 03:02:46 | 6812 |
| Maupin | 02:47:54 | -23.5 | Dark | Up | 47.4 | 109.3 | Up | 02:32:54 - 03:02:54 | 6808 |
| Sisters | 02:47:58 | -23.0 | Dark | Up | 47.4 | 107.9 | Up | 02:32:58 - 03:02:58 | 6751 |
| Bend | 02:47:59 | -23.1 | Dark | Up | 47.6 | 107.9 | Up | 02:32:59 - 03:02:59 | 6723 |
| Oregon Observatory | 02:47:59 | -23.0 | Dark | Up | 47.6 | 107.6 | Up | 02:32:59 - 03:02:59 | 6713 |
| North Lake | 02:48:00 | -23.2 | Dark | Up | 48.2 | 107.5 | Up | 02:33:00 - 03:03:00 | 6643 |
| Chiloquin | 02:48:05 | -22.4 | Dark | Up | 47.7 | 105.9 | Up | 02:33:05 - 03:03:05 | 6615 |
| Klamath Falls | 02:48:06 | -22.4 | Dark | Up | 47.8 | 105.6 | Up | 02:33:06 - 03:03:06 | 6584 |
| Lakeview | 02:48:02 | -23.5 | Dark | Up | 48.9 | 106.8 | Up | 02:33:02 - 03:03:02 | 6536 |
| Cedarville | 02:48:04 | -23.5 | Dark | Up | 49.2 | 106.3 | Up | 02:33:04 - 03:03:04 | 6473 |
| Fall River/Burney | 02:48:09 | -22.5 | Dark | Up | 48.4 | 104.7 | Up | 02:33:09 - 03:03:09 | 6471 |
| Susanville | 02:48:08 | -22.9 | Dark | Up | 49.1 | 104.6 | Up | 02:33:08 - 03:03:08 | 6392 |
| Greenville | 02:48:10 | -22.6 | Dark | Up | 49.0 | 104.1 | Up | 02:33:10 - 03:03:10 | 6378 |
| Gimple | 02:48:10 | -22.7 | Dark | Up | 49.1 | 104.1 | Up | 02:33:10 - 03:03:10 | 6375 |
| Quincy | 02:48:11 | -22.6 | Dark | Up | 49.1 | 103.8 | Up | 02:33:11 - 03:03:11 | 6360 |
| Portola | 02:48:09 | -22.9 | Dark | Up | 49.4 | 104.1 | Up | 02:33:09 - 03:03:09 | 6333 |
| Reno | 02:48:09 | -23.4 | Dark | Up | 50.0 | 104.4 | Up | 02:33:09 - 03:03:09 | 6289 |
| Carson City | 02:48:10 | -23.3 | Dark | Up | 50.1 | 104.0 | Up | 02:33:10 - 03:03:10 | 6256 |
| Gardnerville | 02:48:11 | -23.3 | Dark | Up | 50.2 | 103.7 | Up | 02:33:11 - 03:03:11 | 6233 |
| Yerington | 02:48:09 | -23.7 | Dark | Up | 50.6 | 104.3 | Up | 02:33:09 - 03:03:09 | 6218 |
| Hawthorne | 02:48:09 | -24.1 | Dark | Up | 51.1 | 104.2 | Up | 02:33:09 - 03:03:09 | 6159 |
| Lee Vining | 02:48:11 | -23.6 | Dark | Up | 50.9 | 103.1 | Up | 02:33:11 - 03:03:11 | 6125 |
| Tonopah | 02:48:07 | -25.1 | Dark | Up | 52.3 | 104.8 | Up | 02:33:07 - 03:03:07 | 6071 |
| Bishop | 02:48:12 | -24.0 | Dark | Up | 51.6 | 103.0 | Up | 02:33:12 - 03:03:12 | 6046 |
| Beatty | 02:48:09 | -25.2 | Dark | Up | 53.0 | 103.8 | Up | 02:33:09 - 03:03:09 | 5950 |
| Dunrhomin | 02:47:23 | -34.4 | Dark | Up | 60.0 | 120.7 | Up | 02:32:23 - 03:02:23 | 5907 |
| CU-SBO | 02:47:23 | -34.4 | Dark | Up | 60.0 | 120.2 | Up | 02:32:23 - 03:02:23 | 5886 |
| Indian Springs | 02:48:06 | -26.0 | Dark | Up | 53.9 | 104.3 | Up | 02:33:06 - 03:03:06 | 5884 |
| Henderson | 02:48:05 | -26.4 | Dark | Up | 54.5 | 104.1 | Up | 02:33:05 - 03:03:05 | 5811 |
| Wildwood | 02:48:22 | -23.2 | Dark | Up | 52.1 | 98.8 | Up | 02:33:22 - 03:03:22 | 5751 |
| Laughlin/Bullhead City | 02:48:07 | -26.6 | Dark | Up | 55.1 | 103.3 | Up | 02:33:07 - 03:03:07 | 5716 |
| Patrick | 02:48:03 | -27.2 | Dark | Up | 55.6 | 104.2 | Up | 02:33:03 - 03:03:03 | 5716 |
| Kingman/Dolan Springs | 02:48:06 | -27.0 | Dark | Up | 55.5 | 103.8 | Up | 02:33:06 - 03:03:06 | 5701 |
| Mohave Valley | 02:48:06 | -26.5 | Dark | Up | 55.1 | 102.9 | Up | 02:33:06 - 03:03:06 | 5690 |
| Idyllwild | 02:48:17 | -24.6 | Dark | Up | 53.7 | 99.7 | Up | 02:33:17 - 03:03:17 | 5653 |
| Lake Havasu City | 02:48:07 | -26.7 | Dark | Up | 55.4 | 102.6 | Up | 02:33:07 - 03:03:07 | 5644 |
| Parker | 02:48:08 | -26.6 | Dark | Up | 55.5 | 102.1 | Up | 02:33:08 - 03:03:08 | 5609 |
| Calipatria | 02:48:14 | -25.4 | Dark | Up | 54.7 | 99.7 | Up | 02:33:14 - 03:03:14 | 5554 |
| George/Scottsdale | 02:48:01 | -28.5 | Dark | Up | 57.6 | 103.5 | Up | 02:33:01 - 03:03:01 | 5488 |
| Yuma | 02:48:13 | -26.1 | Dark | Up | 55.5 | 99.8 | Up | 02:33:13 - 03:03:13 | 5482 |
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 15VN172, (2028/12/28 02:46UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 8.74 19 44Zet Per 03:54:07.9 +31:53:01 2.8 10.79 12 43Ome1Tau 04:09:10.1 +19:36:32 5.5 2.00 12 PPM 093205 04:03:58.1 +21:04:15 8.3 0.43 10 PPM 093242 04:05:47.2 +21:12:22 8.7 0.22 11 15VN172 04:05:13.9 +21:22:57 13.0 10 Positions are for J2000
Event circumstances last updated at 2022/02/23 01:01:33 UT
Marc W. Buie, Southwest Research Institute