Event between 13TN187 and star GA1000:00342172 with event index number of 2703725
Geocentric closest approach at 2026/10/19 11:49:33 UTC
J2000 position of star is 03:47:41.5 +11:29:48
Equinox of date position of star is 03:48:54.4 +11:33:49
Stellar brightness G=12.8,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 112 degrees from the moon.
Moon is 58% illuminated.
TNO apparent brightness V=23.0
[RECON map]
TNO is 34.4 AU from the Sun
and 33.6 AU from the Earth.
The TNO is moving 20.0
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 294 seconds.
The 1-sigma cross-track error in the shadow position is
2487 km.
The sky-plane scale is
24361.5 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=182.0 km assuming a 5% albedo -- 9.1 sec chord
Diameter=74.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 7:3EEEE
Star training set for 13TN187, (2026/10/19 11:50UT) Object RA Dec mag sep mel Aldebaran 04:37:27.7 +16:33:40 0.8 12.72 124 Menkar 03:03:41.0 +04:11:36 2.5 13.46 99 30 Tau 03:49:44.6 +11:13:25 4.8 0.38 112 PPM 119347 03:48:04.6 +11:37:03 8.5 0.27 111 13TN187 03:49:10.1 +11:34:40 12.8 112 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
3.1 sigma about the mid-time.
The median site spacing is 28.3 km
RECON observability=1.0 and success probability=15.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 11:47:04 | -26.5 | Dark | Down | 44.9 | 219.6 | Up | 11:32:04 - 12:02:04 | -1968 |
| Sleaford | 11:46:25 | -17.5 | AT | Down | 37.3 | 235.1 | Up | 11:31:25 - 12:01:25 | -1970 |
| Kelowna | 11:47:01 | -26.2 | Dark | Down | 45.1 | 221.2 | Up | 11:32:01 - 12:02:01 | -2054 |
| Peachland | 11:47:01 | -26.4 | Dark | Down | 45.3 | 220.9 | Up | 11:32:01 - 12:02:01 | -2061 |
| Summerland | 11:47:01 | -26.4 | Dark | Down | 45.4 | 221.1 | Up | 11:32:01 - 12:02:01 | -2076 |
| Penticton | 11:47:01 | -26.3 | Dark | Down | 45.4 | 221.3 | Up | 11:32:01 - 12:02:01 | -2084 |
| Oliver | 11:47:00 | -26.4 | Dark | Down | 45.7 | 221.6 | Up | 11:32:00 - 12:02:00 | -2117 |
| Victoria | 11:47:12 | -29.0 | Dark | Down | 47.8 | 217.1 | Up | 11:32:12 - 12:02:12 | -2129 |
| Anarchist Mountain Observatory | 11:47:00 | -26.3 | Dark | Down | 45.7 | 221.9 | Up | 11:32:00 - 12:02:00 | -2135 |
| Tonasket | 11:47:00 | -26.5 | Dark | Down | 46.0 | 222.0 | Up | 11:32:00 - 12:02:00 | -2163 |
| Okanogan | 11:47:00 | -26.7 | Dark | Down | 46.3 | 222.1 | Up | 11:32:00 - 12:02:00 | -2193 |
| Brewster | 11:47:01 | -26.9 | Dark | Down | 46.6 | 222.0 | Up | 11:32:01 - 12:02:01 | -2217 |
| Manson/Chelan | 11:47:02 | -27.2 | Dark | Down | 46.9 | 221.7 | Up | 11:32:02 - 12:02:02 | -2232 |
| Wenatchee | 11:47:02 | -27.4 | Dark | Down | 47.3 | 221.8 | Up | 11:32:02 - 12:02:02 | -2275 |
| Ellensburg | 11:47:03 | -27.7 | Dark | Down | 47.7 | 221.8 | Up | 11:32:03 - 12:02:03 | -2311 |
| Yakima | 11:47:02 | -27.8 | Dark | Down | 48.0 | 222.1 | Up | 11:32:02 - 12:02:02 | -2350 |
| Toppenish/White Swan | 11:47:02 | -27.7 | Dark | Down | 48.1 | 222.5 | Up | 11:32:02 - 12:02:02 | -2373 |
| Goldendale | 11:47:03 | -28.1 | Dark | Down | 48.7 | 222.4 | Up | 11:32:03 - 12:02:03 | -2421 |
| PNWRO | 11:46:57 | -26.8 | Dark | Down | 47.7 | 224.7 | Up | 11:31:57 - 12:01:57 | -2428 |
| The Dalles | 11:47:04 | -28.5 | Dark | Down | 49.1 | 222.1 | Up | 11:32:04 - 12:02:04 | -2438 |
| Maupin | 11:47:04 | -28.5 | Dark | Down | 49.3 | 222.5 | Up | 11:32:04 - 12:02:04 | -2480 |
| Sisters | 11:47:05 | -29.1 | Dark | Down | 50.2 | 222.6 | Up | 11:32:05 - 12:02:05 | -2558 |
| Bend | 11:47:04 | -28.9 | Dark | Down | 50.3 | 223.1 | Up | 11:32:04 - 12:02:04 | -2585 |
| Oregon Observatory | 11:47:04 | -29.1 | Dark | Down | 50.4 | 223.1 | Up | 11:32:04 - 12:02:04 | -2600 |
| North Lake | 11:47:02 | -28.9 | Dark | Down | 50.6 | 224.4 | Up | 11:32:02 - 12:02:02 | -2671 |
| Chiloquin | 11:47:06 | -29.7 | Dark | Down | 51.6 | 223.7 | Up | 11:32:06 - 12:02:06 | -2724 |
| Klamath Falls | 11:47:05 | -29.7 | Dark | Down | 51.8 | 224.1 | Up | 11:32:05 - 12:02:05 | -2760 |
| Lakeview | 11:47:00 | -28.7 | Dark | Down | 51.1 | 226.0 | Up | 11:32:00 - 12:02:00 | -2784 |
| Cedarville | 11:46:59 | -28.7 | Dark | Down | 51.5 | 226.8 | Up | 11:31:59 - 12:01:59 | -2852 |
| Fall River/Burney | 11:47:04 | -29.7 | Dark | Down | 52.4 | 225.7 | Up | 11:32:04 - 12:02:04 | -2883 |
| Susanville | 11:47:01 | -29.3 | Dark | Down | 52.5 | 227.2 | Up | 11:32:01 - 12:02:01 | -2957 |
| Greenville | 11:47:02 | -29.6 | Dark | Down | 52.8 | 227.1 | Up | 11:32:02 - 12:02:02 | -2981 |
| Gimple | 11:47:01 | -29.6 | Dark | Down | 52.8 | 227.2 | Up | 11:32:01 - 12:02:01 | -2983 |
| Quincy | 11:47:02 | -29.7 | Dark | Down | 53.0 | 227.3 | Up | 11:32:02 - 12:02:02 | -3002 |
| Portola | 11:47:00 | -29.3 | Dark | Down | 52.8 | 228.1 | Up | 11:32:00 - 12:02:00 | -3021 |
| Reno | 11:46:58 | -28.9 | Dark | Down | 52.6 | 229.2 | Up | 11:31:58 - 12:01:58 | -3058 |
| Carson City | 11:46:57 | -29.0 | Dark | Down | 52.8 | 229.5 | Up | 11:31:57 - 12:01:57 | -3095 |
| Gardnerville | 11:46:57 | -29.0 | Dark | Down | 52.9 | 229.8 | Up | 11:31:57 - 12:01:57 | -3120 |
| Yerington | 11:46:55 | -28.5 | Dark | Down | 52.6 | 230.5 | Up | 11:31:55 - 12:01:55 | -3124 |
| Dunrhomin | 11:46:08 | -17.8 | AT | Down | 42.9 | 244.5 | Up | 11:31:08 - 12:01:08 | -3147 |
| Hawthorne | 11:46:53 | -28.2 | Dark | Down | 52.5 | 231.7 | Up | 11:31:53 - 12:01:53 | -3179 |
| Lee Vining | 11:46:55 | -28.7 | Dark | Down | 53.2 | 231.6 | Up | 11:31:55 - 12:01:55 | -3230 |
| Tonopah | 11:46:48 | -27.2 | Dark | Down | 52.0 | 233.9 | Up | 11:31:48 - 12:01:48 | -3247 |
| Bishop | 11:46:52 | -28.2 | Dark | Down | 53.1 | 233.2 | Up | 11:31:52 - 12:01:52 | -3302 |
| Beatty | 11:46:45 | -27.0 | Dark | Down | 52.3 | 235.6 | Up | 11:31:45 - 12:01:45 | -3373 |
| Indian Springs | 11:46:41 | -26.2 | Dark | Down | 51.8 | 237.2 | Up | 11:31:41 - 12:01:41 | -3422 |
| Henderson | 11:46:39 | -25.7 | Dark | Down | 51.6 | 238.6 | Up | 11:31:39 - 12:01:39 | -3487 |
| Patrick | 11:46:34 | -24.9 | Dark | Down | 51.2 | 240.4 | Up | 11:31:34 - 12:01:34 | -3567 |
| Laughlin/Bullhead City | 11:46:37 | -25.5 | Dark | Down | 51.8 | 240.0 | Up | 11:31:37 - 12:01:37 | -3584 |
| Kingman/Dolan Springs | 11:46:35 | -25.1 | Dark | Down | 51.4 | 240.5 | Up | 11:31:35 - 12:01:35 | -3588 |
| Mohave Valley | 11:46:37 | -25.5 | Dark | Down | 51.9 | 240.3 | Up | 11:31:37 - 12:01:37 | -3613 |
| Wildwood | 11:46:52 | -28.9 | Dark | Down | 55.1 | 236.6 | Up | 11:31:52 - 12:01:52 | -3641 |
| Lake Havasu City | 11:46:36 | -25.3 | Dark | Down | 51.9 | 241.0 | Up | 11:31:36 - 12:01:36 | -3658 |
| Parker | 11:46:36 | -25.4 | Dark | Down | 52.1 | 241.4 | Up | 11:31:36 - 12:01:36 | -3696 |
| Idyllwild | 11:46:45 | -27.4 | Dark | Down | 54.0 | 239.2 | Up | 11:31:45 - 12:01:45 | -3706 |
| George/Scottsdale | 11:46:27 | -23.4 | Dark | Down | 50.5 | 244.3 | Up | 11:31:27 - 12:01:27 | -3771 |
| Calipatria | 11:46:40 | -26.5 | Dark | Down | 53.5 | 241.3 | Up | 11:31:40 - 12:01:40 | -3787 |
| Yuma | 11:46:37 | -25.8 | Dark | Down | 53.0 | 242.7 | Up | 11:31:37 - 12:01:37 | -3846 |
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 13TN187, (2026/10/19 11:50UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 12.72 124 Menkar 03:02:16.8 +04:05:21 2.5 13.46 99 30 Tau 03:48:16.3 +11:08:35 4.8 0.38 112 PPM 119347 03:46:36.0 +11:32:09 8.5 0.27 111 13TN187 03:47:41.5 +11:29:48 12.8 112 Positions are for J2000
Event circumstances last updated at 2022/01/17 23:56:41 UT
Marc W. Buie, Southwest Research Institute