Event between (523770) 14XO40 and star GA0780:04661512 with event index number of 1430445
Geocentric closest approach at 2025/04/21 10:03:35 UTC
J2000 position of star is 14:57:06.4 -10:11:32
Equinox of date position of star is 14:58:15.1 -10:16:35
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon.
Moon is 46% illuminated.
TNO apparent brightness V=20.1
[RECON map]
TNO is 16.3 AU from the Sun
and 15.3 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
6.7 arcsec/hr.
The 1-sigma error in the time of the event is 216 seconds.
The 1-sigma cross-track error in the shadow position is
3183 km.
The sky-plane scale is
11115.6 km/arcsec.
The TNO has an absolute magnitude Hv=8.0
Diameter=150.7 km assuming a 5% albedo -- 7.3 sec chord
Diameter=61.5 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
Star training set for 523770, (2025/04/21 10:04UT) Object RA Dec mag sep mel Spica 13:26:31.8 -11:17:33 1.0 22.60 102 27Bet Lib 15:18:22.4 -09:28:29 2.6 4.97 77 18 Lib 15:00:16.0 -11:14:39 5.8 1.05 81 PPM 229488 14:56:53.1 -10:22:58 8.3 0.40 82 PPM 229524 14:58:14.5 -10:12:17 9.6 0.11 82 523770 14:58:28.5 -10:17:34 15.5 81 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
4.2 sigma about the mid-time.
The median site spacing is 11.1 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) |
| Dunrhomin | 10:03:48 | -22.5 | Dark | Up | 31.9 | 216.9 | Up | 09:48:48 - 10:18:48 | 2847 |
| Clarence Fulton | 10:05:01 | -21.6 | Dark | Down | 27.7 | 199.4 | Low | 09:50:01 - 10:20:01 | 2796 |
| Kelowna | 10:05:00 | -22.0 | Dark | Down | 28.1 | 199.3 | Low | 09:50:00 - 10:20:00 | 2777 |
| Peachland | 10:05:01 | -22.2 | Dark | Down | 28.2 | 199.0 | Low | 09:50:01 - 10:20:01 | 2764 |
| Penticton | 10:05:00 | -22.3 | Dark | Down | 28.4 | 199.3 | Low | 09:50:00 - 10:20:00 | 2762 |
| Summerland | 10:05:01 | -22.3 | Dark | Down | 28.4 | 199.1 | Low | 09:50:01 - 10:20:01 | 2761 |
| Anarchist Mountain Observatory | 10:04:58 | -22.7 | Dark | Down | 28.9 | 199.6 | Low | 09:49:58 - 10:19:58 | 2750 |
| Oliver | 10:04:59 | -22.6 | Dark | Down | 28.7 | 199.3 | Low | 09:49:59 - 10:19:59 | 2749 |
| Tonasket | 10:04:57 | -23.0 | Dark | Down | 29.2 | 199.5 | Low | 09:49:57 - 10:19:57 | 2735 |
| Okanogan | 10:04:57 | -23.3 | Dark | Down | 29.5 | 199.4 | Low | 09:49:57 - 10:19:57 | 2718 |
| Brewster | 10:04:57 | -23.6 | Dark | Down | 29.8 | 199.3 | Low | 09:49:57 - 10:19:57 | 2701 |
| Manson/Chelan | 10:04:57 | -23.9 | Dark | Down | 30.1 | 198.9 | Up | 09:49:57 - 10:19:57 | 2680 |
| Wenatchee | 10:04:57 | -24.4 | Dark | Down | 30.6 | 198.8 | Up | 09:49:57 - 10:19:57 | 2656 |
| Pasco | 10:04:50 | -24.9 | Dark | Down | 31.4 | 200.3 | Up | 09:49:50 - 10:19:50 | 2649 |
| PNWRO | 10:04:49 | -25.0 | Dark | Down | 31.6 | 200.6 | Up | 09:49:49 - 10:19:49 | 2647 |
| Ellensburg | 10:04:57 | -24.8 | Dark | Down | 31.0 | 198.6 | Up | 09:49:57 - 10:19:57 | 2632 |
| Yakima | 10:04:56 | -25.1 | Dark | Down | 31.4 | 198.7 | Up | 09:49:56 - 10:19:56 | 2614 |
| Toppenish/White Swan | 10:04:55 | -25.3 | Dark | Down | 31.6 | 198.9 | Up | 09:49:55 - 10:19:55 | 2611 |
| Victoria | 10:05:09 | -24.5 | Dark | Down | 30.1 | 195.2 | Up | 09:50:09 - 10:20:09 | 2596 |
| Goldendale | 10:04:54 | -25.9 | Dark | Down | 32.2 | 198.5 | Up | 09:49:54 - 10:19:54 | 2573 |
| The Dalles | 10:04:55 | -26.2 | Dark | Down | 32.5 | 198.2 | Up | 09:49:55 - 10:19:55 | 2550 |
| Maupin | 10:04:54 | -26.5 | Dark | Down | 32.9 | 198.4 | Up | 09:49:54 - 10:19:54 | 2535 |
| Redmond | 10:04:52 | -27.3 | Dark | Down | 33.7 | 198.4 | Up | 09:49:52 - 10:19:52 | 2492 |
| Sisters | 10:04:53 | -27.5 | Dark | Down | 33.8 | 198.0 | Up | 09:49:53 - 10:19:53 | 2479 |
| Bend | 10:04:52 | -27.5 | Dark | Down | 34.0 | 198.3 | Up | 09:49:52 - 10:19:52 | 2477 |
| Oregon Observatory | 10:04:52 | -27.7 | Dark | Down | 34.2 | 198.2 | Up | 09:49:52 - 10:19:52 | 2464 |
| North Lake | 10:04:48 | -28.1 | Dark | Down | 34.7 | 199.0 | Up | 09:49:48 - 10:19:48 | 2454 |
| La Pine/Gilchrist | 10:04:51 | -27.9 | Dark | Down | 34.4 | 198.2 | Up | 09:49:51 - 10:19:51 | 2453 |
| Paisley | 10:04:46 | -28.4 | Dark | Down | 35.1 | 199.5 | Up | 09:49:46 - 10:19:46 | 2441 |
| Lakeview | 10:04:44 | -28.7 | Dark | Down | 35.5 | 199.8 | Up | 09:49:44 - 10:19:44 | 2424 |
| Cedarville | 10:04:42 | -29.2 | Dark | Down | 36.1 | 200.2 | Up | 09:49:42 - 10:19:42 | 2398 |
| Chiloquin | 10:04:50 | -29.0 | Dark | Down | 35.5 | 198.0 | Up | 09:49:50 - 10:19:50 | 2387 |
| Klamath Falls | 10:04:50 | -29.3 | Dark | Down | 35.8 | 198.2 | Up | 09:49:50 - 10:19:50 | 2373 |
| Tonopah | 10:04:22 | -30.6 | Dark | Up | 38.5 | 204.6 | Up | 09:49:22 - 10:19:22 | 2331 |
| Fall River/Burney | 10:04:45 | -30.1 | Dark | Down | 36.9 | 198.9 | Up | 09:49:45 - 10:19:45 | 2328 |
| Susanville | 10:04:41 | -30.3 | Dark | Up | 37.3 | 199.9 | Up | 09:49:41 - 10:19:41 | 2324 |
| Patrick | 10:04:03 | -30.8 | Dark | Up | 39.6 | 209.4 | Up | 09:49:03 - 10:19:03 | 2313 |
| Reno | 10:04:36 | -30.6 | Dark | Up | 37.9 | 201.1 | Up | 09:49:36 - 10:19:36 | 2311 |
| Indian Springs | 10:04:13 | -30.9 | Dark | Up | 39.3 | 206.9 | Up | 09:49:13 - 10:19:13 | 2309 |
| Yerington | 10:04:31 | -30.8 | Dark | Up | 38.2 | 202.0 | Up | 09:49:31 - 10:19:31 | 2307 |
| Henderson | 10:04:09 | -30.9 | Dark | Up | 39.5 | 207.9 | Up | 09:49:09 - 10:19:09 | 2305 |
| Hawthorne | 10:04:29 | -30.9 | Dark | Up | 38.5 | 202.8 | Up | 09:49:29 - 10:19:29 | 2302 |
| Gimple | 10:04:41 | -30.6 | Dark | Up | 37.6 | 199.7 | Up | 09:49:41 - 10:19:41 | 2302 |
| Portola | 10:04:39 | -30.7 | Dark | Up | 37.8 | 200.3 | Up | 09:49:39 - 10:19:39 | 2300 |
| Greenville | 10:04:41 | -30.6 | Dark | Down | 37.6 | 199.6 | Up | 09:49:41 - 10:19:41 | 2298 |
| Kingman/Dolan Springs | 10:04:04 | -31.1 | Dark | Up | 39.9 | 209.3 | Up | 09:49:04 - 10:19:04 | 2294 |
| Carson City | 10:04:34 | -30.9 | Dark | Up | 38.2 | 201.2 | Up | 09:49:34 - 10:19:34 | 2293 |
| George/Scottsdale | 10:03:51 | -30.8 | Dark | Up | 40.3 | 212.4 | Up | 09:48:51 - 10:18:51 | 2292 |
| Quincy | 10:04:41 | -30.8 | Dark | Up | 37.8 | 199.7 | Up | 09:49:41 - 10:19:41 | 2288 |
| Beatty | 10:04:18 | -31.2 | Dark | Up | 39.4 | 205.5 | Up | 09:49:18 - 10:19:18 | 2286 |
| Gardnerville | 10:04:34 | -31.1 | Dark | Up | 38.4 | 201.4 | Up | 09:49:34 - 10:19:34 | 2282 |
| Laughlin/Bullhead City | 10:04:05 | -31.4 | Dark | Up | 40.1 | 208.7 | Up | 09:49:05 - 10:19:05 | 2272 |
| Mohave Valley | 10:04:04 | -31.6 | Dark | Up | 40.4 | 208.8 | Up | 09:49:04 - 10:19:04 | 2257 |
| Lee Vining | 10:04:29 | -31.6 | Dark | Up | 39.2 | 202.4 | Up | 09:49:29 - 10:19:29 | 2254 |
| Bishop | 10:04:25 | -31.7 | Dark | Up | 39.5 | 203.4 | Up | 09:49:25 - 10:19:25 | 2249 |
| Lake Havasu City | 10:04:02 | -31.7 | Dark | Up | 40.6 | 209.3 | Up | 09:49:02 - 10:19:02 | 2244 |
| Parker | 10:04:00 | -32.0 | Dark | Up | 40.9 | 209.4 | Up | 09:49:00 - 10:19:00 | 2225 |
| Blythe | 10:04:01 | -32.5 | Dark | Up | 41.5 | 209.3 | Up | 09:49:01 - 10:19:01 | 2183 |
| Yuma | 10:03:59 | -33.2 | Dark | Up | 42.3 | 209.7 | Up | 09:48:59 - 10:18:59 | 2127 |
| Calipatria | 10:04:03 | -33.4 | Dark | Up | 42.3 | 208.4 | Up | 09:49:03 - 10:19:03 | 2118 |
| Idyllwild | 10:04:09 | -33.6 | Dark | Up | 42.2 | 206.7 | Up | 09:49:09 - 10:19:09 | 2108 |
| Wildwood | 10:04:17 | -34.3 | Dark | Up | 42.6 | 204.3 | Up | 09:49:17 - 10:19:17 | 2054 |
| CPSLO | 10:04:28 | -34.4 | Dark | Up | 42.1 | 201.3 | Up | 09:49:28 - 10:19:28 | 2042 |
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 523770, (2025/04/21 10:04UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 22.60 102 27Bet Lib 15:17:00.3 -09:22:59 2.6 4.97 77 18 Lib 14:58:53.4 -11:08:40 5.8 1.05 81 PPM 229488 14:55:31.0 -10:16:54 8.3 0.40 82 PPM 229524 14:56:52.5 -10:06:15 9.6 0.11 82 523770 14:57:06.4 -10:11:32 15.5 81 Positions are for J2000
Event circumstances last updated at 2021/03/05 01:30:46 UT
Marc W. Buie, Southwest Research Institute