Event between 12YF12 and star GA0880:01585001 with event index number of 1560876
Geocentric closest approach at 2025/11/26 12:40:24 UTC
J2000 position of star is 06:39:20.0 -00:42:59
Equinox of date position of star is 06:40:21.9 -00:44:10
Stellar brightness G=15.9,
use SENSEUP=128
Star is 139 degrees from the moon.
Moon is 32% illuminated.
TNO apparent brightness V=26.2
[RECON map]
TNO is 40.8 AU from the Sun
and 40.0 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 1049 seconds.
The 1-sigma cross-track error in the shadow position is
5001 km.
The sky-plane scale is
29034.5 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=382.0 km assuming a 5% albedo -- 2.9 sec chord
Diameter=155.9 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 12YF12, (2025/11/26 12:40UT) Object RA Dec mag sep mel Betelgeuse 05:56:34.5 +07:24:35 0.4 13.68 132 Saiph 05:48:59.2 -09:39:44 2.1 15.64 123 PPM 176316 06:34:56.8 -01:14:31 5.1 1.51 137 PPM 176351 06:39:15.6 -00:42:23 8.3 0.35 138 PPM 176363 06:40:55.9 -00:50:53 8.7 0.13 139 PPM 176362 06:40:37.2 -00:47:55 10.9 0.06 138 12YF12 06:40:39.2 -00:44:30 15.9 139 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
0.9 sigma about the mid-time.
The median site spacing is 20.9 km
RECON observability=1.0 and success probability=8.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 12:37:41 | -26.6 | Dark | Down | 30.5 | 223.0 | Up | 12:22:41 - 12:52:41 | -2086 |
| Kelowna | 12:37:41 | -26.7 | Dark | Down | 30.9 | 223.0 | Up | 12:22:41 - 12:52:41 | -2115 |
| Peachland | 12:37:42 | -26.9 | Dark | Down | 31.1 | 222.7 | Up | 12:22:42 - 12:52:42 | -2120 |
| Summerland | 12:37:41 | -26.8 | Dark | Down | 31.2 | 222.9 | Up | 12:22:41 - 12:52:41 | -2133 |
| Penticton | 12:37:41 | -26.7 | Dark | Down | 31.2 | 223.0 | Up | 12:22:41 - 12:52:41 | -2140 |
| Oliver | 12:37:40 | -26.7 | Dark | Down | 31.4 | 223.2 | Up | 12:22:40 - 12:52:40 | -2168 |
| Victoria | 12:37:50 | -29.2 | Dark | Down | 33.6 | 219.4 | Up | 12:22:50 - 12:52:50 | -2171 |
| Anarchist Mountain Observatory | 12:37:39 | -26.6 | Dark | Down | 31.5 | 223.4 | Up | 12:22:39 - 12:52:39 | -2184 |
| Tonasket | 12:37:39 | -26.6 | Dark | Down | 31.7 | 223.5 | Up | 12:22:39 - 12:52:39 | -2208 |
| Okanogan | 12:37:39 | -26.7 | Dark | Down | 32.0 | 223.5 | Up | 12:22:39 - 12:52:39 | -2234 |
| Brewster | 12:37:39 | -26.9 | Dark | Down | 32.3 | 223.4 | Up | 12:22:39 - 12:52:39 | -2253 |
| Manson/Chelan | 12:37:40 | -27.1 | Dark | Down | 32.6 | 223.1 | Up | 12:22:40 - 12:52:40 | -2265 |
| Entiat | 12:37:40 | -27.1 | Dark | Down | 32.8 | 223.1 | Up | 12:22:40 - 12:52:40 | -2282 |
| Wenatchee | 12:37:40 | -27.2 | Dark | Down | 33.1 | 223.1 | Up | 12:22:40 - 12:52:40 | -2302 |
| Ellensburg | 12:37:40 | -27.3 | Dark | Down | 33.5 | 223.1 | Up | 12:22:40 - 12:52:40 | -2333 |
| Yakima | 12:37:39 | -27.3 | Dark | Down | 33.8 | 223.2 | Up | 12:22:39 - 12:52:39 | -2367 |
| Toppenish/White Swan | 12:37:39 | -27.2 | Dark | Down | 33.8 | 223.5 | Up | 12:22:39 - 12:52:39 | -2387 |
| Pasco | 12:37:34 | -26.3 | Dark | Down | 33.3 | 224.9 | Up | 12:22:34 - 12:52:34 | -2414 |
| Goldendale | 12:37:39 | -27.5 | Dark | Down | 34.4 | 223.3 | Up | 12:22:39 - 12:52:39 | -2427 |
| PNWRO | 12:37:33 | -26.2 | Dark | Down | 33.4 | 225.2 | Up | 12:22:33 - 12:52:33 | -2438 |
| The Dalles | 12:37:40 | -27.7 | Dark | Down | 34.8 | 223.0 | Up | 12:22:40 - 12:52:40 | -2442 |
| Maupin | 12:37:39 | -27.6 | Dark | Down | 35.0 | 223.3 | Up | 12:22:39 - 12:52:39 | -2478 |
| Sisters | 12:37:39 | -27.9 | Dark | Down | 35.9 | 223.2 | Up | 12:22:39 - 12:52:39 | -2546 |
| Redmond | 12:37:38 | -27.6 | Dark | Down | 35.7 | 223.7 | Up | 12:22:38 - 12:52:38 | -2554 |
| Bend | 12:37:38 | -27.7 | Dark | Down | 36.0 | 223.6 | Up | 12:22:38 - 12:52:38 | -2570 |
| Oregon Observatory | 12:37:38 | -27.8 | Dark | Down | 36.2 | 223.6 | Up | 12:22:38 - 12:52:38 | -2583 |
| La Pine/Gilchrist | 12:37:38 | -27.8 | Dark | Down | 36.3 | 223.6 | Up | 12:22:38 - 12:52:38 | -2600 |
| North Lake | 12:37:36 | -27.4 | Dark | Down | 36.3 | 224.5 | Up | 12:22:36 - 12:52:36 | -2646 |
| Paisley | 12:37:34 | -27.1 | Dark | Down | 36.6 | 225.1 | Up | 12:22:34 - 12:52:34 | -2700 |
| Klamath Falls | 12:37:38 | -28.0 | Dark | Down | 37.5 | 224.1 | Up | 12:22:38 - 12:52:38 | -2723 |
| Lakeview | 12:37:33 | -26.9 | Dark | Down | 36.8 | 225.6 | Up | 12:22:33 - 12:52:33 | -2747 |
| Cedarville | 12:37:32 | -26.7 | Dark | Down | 37.2 | 226.1 | Up | 12:22:32 - 12:52:32 | -2808 |
| Fall River/Burney | 12:37:35 | -27.6 | Dark | Down | 38.2 | 225.1 | Up | 12:22:35 - 12:52:35 | -2833 |
| Susanville | 12:37:32 | -27.0 | Dark | Down | 38.2 | 226.3 | Up | 12:22:32 - 12:52:32 | -2901 |
| Greenville | 12:37:32 | -27.2 | Dark | Down | 38.6 | 226.1 | Up | 12:22:32 - 12:52:32 | -2922 |
| Gimple | 12:37:32 | -27.1 | Dark | Down | 38.5 | 226.2 | Up | 12:22:32 - 12:52:32 | -2923 |
| Quincy | 12:37:32 | -27.2 | Dark | Down | 38.7 | 226.2 | Up | 12:22:32 - 12:52:32 | -2940 |
| Portola | 12:37:31 | -26.8 | Dark | Down | 38.5 | 226.8 | Up | 12:22:31 - 12:52:31 | -2958 |
| Reno | 12:37:28 | -26.3 | Dark | Down | 38.3 | 227.6 | Up | 12:22:28 - 12:52:28 | -2992 |
| Carson City | 12:37:27 | -26.2 | Dark | Down | 38.6 | 227.9 | Up | 12:22:27 - 12:52:27 | -3026 |
| Gardnerville | 12:37:27 | -26.1 | Dark | Down | 38.7 | 228.1 | Up | 12:22:27 - 12:52:27 | -3049 |
| Yerington | 12:37:26 | -25.7 | Dark | Down | 38.3 | 228.6 | Up | 12:22:26 - 12:52:26 | -3053 |
| Hawthorne | 12:37:23 | -25.2 | Dark | Down | 38.3 | 229.4 | Up | 12:22:23 - 12:52:23 | -3104 |
| Niwot | 12:36:46 | -15.5 | AT | Down | 29.0 | 241.0 | Low | 12:21:46 - 12:51:46 | -3139 |
| SwRI | 12:36:46 | -15.5 | AT | Down | 29.1 | 240.9 | Low | 12:21:46 - 12:51:46 | -3148 |
| Lee Vining | 12:37:24 | -25.5 | Dark | Down | 39.0 | 229.3 | Up | 12:22:24 - 12:52:24 | -3149 |
| Tonopah | 12:37:18 | -24.1 | Dark | Down | 37.8 | 231.1 | Up | 12:22:18 - 12:52:18 | -3168 |
| Bishop | 12:37:21 | -24.9 | Dark | Down | 39.0 | 230.4 | Up | 12:22:21 - 12:52:21 | -3216 |
| Beatty | 12:37:15 | -23.6 | Dark | Down | 38.2 | 232.3 | Up | 12:22:15 - 12:52:15 | -3284 |
| Indian Springs | 12:37:12 | -22.7 | Dark | Down | 37.8 | 233.5 | Up | 12:22:12 - 12:52:12 | -3331 |
| CPSLO | 12:37:27 | -26.4 | Dark | Down | 41.7 | 229.4 | Up | 12:22:27 - 12:52:27 | -3376 |
| Henderson | 12:37:09 | -22.0 | Dark | Down | 37.6 | 234.5 | Up | 12:22:09 - 12:52:09 | -3393 |
| Searchlight/Boulder City | 12:37:08 | -21.9 | Dark | Down | 37.9 | 234.9 | Up | 12:22:08 - 12:52:08 | -3449 |
| Patrick | 12:37:04 | -21.0 | Dark | Down | 37.3 | 236.0 | Up | 12:22:04 - 12:52:04 | -3469 |
| Laughlin/Bullhead City | 12:37:06 | -21.5 | Dark | Down | 37.9 | 235.4 | Up | 12:22:06 - 12:52:06 | -3483 |
| Kingman/Dolan Springs | 12:37:05 | -21.1 | Dark | Down | 37.5 | 235.9 | Up | 12:22:05 - 12:52:05 | -3488 |
| Mohave Valley | 12:37:06 | -21.5 | Dark | Down | 38.0 | 235.6 | Up | 12:22:06 - 12:52:06 | -3509 |
| DCO | 12:37:02 | -20.4 | Dark | Down | 36.9 | 236.8 | Up | 12:22:02 - 12:52:02 | -3509 |
| Wildwood | 12:37:19 | -24.6 | Dark | Down | 41.1 | 232.3 | Up | 12:22:19 - 12:52:19 | -3525 |
| Lake Havasu City | 12:37:05 | -21.2 | Dark | Down | 38.1 | 236.1 | Up | 12:22:05 - 12:52:05 | -3552 |
| Parker | 12:37:04 | -21.1 | Dark | Down | 38.2 | 236.4 | Up | 12:22:04 - 12:52:04 | -3587 |
| Idyllwild | 12:37:12 | -23.0 | Dark | Down | 40.1 | 234.4 | Up | 12:22:12 - 12:52:12 | -3589 |
| Blythe | 12:37:05 | -21.3 | Dark | Down | 38.7 | 236.4 | Up | 12:22:05 - 12:52:05 | -3633 |
| George/Scottsdale | 12:36:56 | -19.1 | Dark | Down | 36.8 | 238.8 | Up | 12:21:56 - 12:51:56 | -3664 |
| Calipatria | 12:37:08 | -21.9 | Dark | Down | 39.7 | 235.9 | Up | 12:22:08 - 12:52:08 | -3667 |
| Yuma | 12:37:04 | -21.1 | Dark | Down | 39.3 | 237.0 | Up | 12:22:04 - 12:52:04 | -3724 |
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 12YF12, (2025/11/26 12:40UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 13.68 132 Saiph 05:47:45.4 -09:40:11 2.1 15.64 123 PPM 176316 06:33:37.9 -01:13:13 5.1 1.51 137 PPM 176351 06:37:56.3 -00:40:56 8.3 0.35 138 PPM 176363 06:39:36.7 -00:49:23 8.7 0.13 139 PPM 176362 06:39:18.0 -00:46:25 10.9 0.06 138 12YF12 06:39:20.0 -00:42:59 15.9 139 Positions are for J2000
Event circumstances last updated at 2020/03/29 21:12:37 UT
Marc W. Buie, Southwest Research Institute