Event between 14UU228 and star GA1100:00489411 with event index number of 1707818
Geocentric closest approach at 2026/12/15 08:37:33 UTC
J2000 position of star is 03:59:21.3 +21:18:02
Equinox of date position of star is 04:00:33.8 +21:21:29
Stellar brightness G=14.2,
use SENSEUP=64
Star is 90 degrees from the moon.
Moon is 32% illuminated.
TNO apparent brightness V=24.5
[RECON map]
TNO is 27.9 AU from the Sun
and 27.0 AU from the Earth.
The TNO is moving 21.8
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 701 seconds.
The 1-sigma cross-track error in the shadow position is
3450 km.
The sky-plane scale is
19596.6 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=66.1 km assuming a 5% albedo -- 2.8 sec chord
Diameter=27.0 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is 3:2E
Star training set for 14UU228, (2026/12/15 08:38UT) Object RA Dec mag sep mel Aldebaran 04:37:28.2 +16:33:42 0.8 9.88 98 44Zet Per 03:55:50.0 +31:57:41 2.8 10.65 91 32 Tau 03:58:27.9 +22:33:13 5.6 1.31 90 PPM 093159 04:02:15.2 +20:29:14 8.4 0.94 90 PPM 093127 04:00:11.2 +21:13:25 10.0 0.23 90 14UU228 04:00:56.4 +21:22:32 14.2 90 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
1.3 sigma about the mid-time.
The median site spacing is 24.3 km
RECON observability=1.0 and success probability=14.9%
| 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 | 08:35:19 | -61.7 | Dark | Down | 50.8 | 234.9 | Up | 08:20:19 - 08:50:19 | 280 |
| Kelowna | 08:35:19 | -62.1 | Dark | Down | 51.1 | 235.1 | Up | 08:20:19 - 08:50:19 | 241 |
| Peachland | 08:35:19 | -62.3 | Dark | Down | 51.3 | 234.8 | Up | 08:20:19 - 08:50:19 | 230 |
| Summerland | 08:35:19 | -62.4 | Dark | Down | 51.4 | 235.1 | Up | 08:20:19 - 08:50:19 | 215 |
| Penticton | 08:35:18 | -62.5 | Dark | Down | 51.3 | 235.3 | Up | 08:20:18 - 08:50:18 | 208 |
| Oliver | 08:35:18 | -62.8 | Dark | Down | 51.5 | 235.7 | Up | 08:20:18 - 08:50:18 | 172 |
| Anarchist Mountain Observatory | 08:35:17 | -62.9 | Dark | Down | 51.5 | 236.1 | Up | 08:20:17 - 08:50:17 | 155 |
| Tonasket | 08:35:17 | -63.2 | Dark | Down | 51.7 | 236.3 | Up | 08:20:17 - 08:50:17 | 123 |
| Victoria | 08:35:29 | -64.2 | Dark | Down | 54.0 | 231.5 | Up | 08:20:29 - 08:50:29 | 107 |
| Okanogan | 08:35:17 | -63.6 | Dark | Down | 52.0 | 236.5 | Up | 08:20:17 - 08:50:17 | 89 |
| Brewster | 08:35:18 | -63.9 | Dark | Down | 52.3 | 236.5 | Up | 08:20:18 - 08:50:18 | 61 |
| Manson/Chelan | 08:35:19 | -64.2 | Dark | Down | 52.6 | 236.3 | Up | 08:20:19 - 08:50:19 | 40 |
| Entiat | 08:35:19 | -64.4 | Dark | Down | 52.8 | 236.5 | Up | 08:20:19 - 08:50:19 | 17 |
| Wenatchee | 08:35:19 | -64.6 | Dark | Down | 53.0 | 236.6 | Up | 08:20:19 - 08:50:19 | -9 |
| Ellensburg | 08:35:19 | -65.1 | Dark | Down | 53.3 | 236.8 | Up | 08:20:19 - 08:50:19 | -51 |
| Yakima | 08:35:19 | -65.5 | Dark | Down | 53.5 | 237.2 | Up | 08:20:19 - 08:50:19 | -93 |
| Toppenish/White Swan | 08:35:18 | -65.6 | Dark | Down | 53.6 | 237.7 | Up | 08:20:18 - 08:50:18 | -116 |
| Pasco | 08:35:14 | -65.4 | Dark | Down | 52.9 | 239.4 | Up | 08:20:14 - 08:50:14 | -128 |
| PNWRO | 08:35:13 | -65.5 | Dark | Down | 52.9 | 239.9 | Up | 08:20:13 - 08:50:13 | -153 |
| Goldendale | 08:35:19 | -66.2 | Dark | Down | 54.1 | 237.8 | Up | 08:20:19 - 08:50:19 | -173 |
| The Dalles | 08:35:20 | -66.5 | Dark | Down | 54.4 | 237.6 | Up | 08:20:20 - 08:50:20 | -196 |
| Maupin | 08:35:19 | -66.9 | Dark | Down | 54.6 | 238.3 | Up | 08:20:19 - 08:50:19 | -240 |
| Sisters | 08:35:20 | -67.9 | Dark | Down | 55.4 | 238.7 | Up | 08:20:20 - 08:50:20 | -331 |
| Redmond | 08:35:18 | -67.8 | Dark | Down | 55.1 | 239.2 | Up | 08:20:18 - 08:50:18 | -334 |
| Bend | 08:35:19 | -68.0 | Dark | Down | 55.3 | 239.3 | Up | 08:20:19 - 08:50:19 | -356 |
| Oregon Observatory | 08:35:19 | -68.2 | Dark | Down | 55.5 | 239.4 | Up | 08:20:19 - 08:50:19 | -374 |
| La Pine/Gilchrist | 08:35:19 | -68.4 | Dark | Down | 55.6 | 239.6 | Up | 08:20:19 - 08:50:19 | -396 |
| North Lake | 08:35:17 | -68.6 | Dark | Down | 55.5 | 240.8 | Up | 08:20:17 - 08:50:17 | -442 |
| Paisley | 08:35:15 | -69.0 | Dark | Down | 55.5 | 242.0 | Up | 08:20:15 - 08:50:15 | -500 |
| Klamath Falls | 08:35:19 | -69.8 | Dark | Down | 56.5 | 241.1 | Up | 08:20:19 - 08:50:19 | -549 |
| Lakeview | 08:35:14 | -69.4 | Dark | Down | 55.6 | 242.9 | Up | 08:20:14 - 08:50:14 | -554 |
| Cedarville | 08:35:13 | -70.0 | Dark | Down | 55.8 | 243.9 | Up | 08:20:13 - 08:50:13 | -624 |
| Fall River/Burney | 08:35:17 | -70.8 | Dark | Down | 56.8 | 243.2 | Up | 08:20:17 - 08:50:17 | -675 |
| Niwot | 08:34:26 | -63.2 | Dark | Down | 45.6 | 259.6 | Up | 08:19:26 - 08:49:26 | -706 |
| SwRI | 08:34:26 | -63.4 | Dark | Down | 45.7 | 259.6 | Up | 08:19:26 - 08:49:26 | -718 |
| Susanville | 08:35:14 | -71.1 | Dark | Down | 56.6 | 244.9 | Up | 08:20:14 - 08:50:14 | -743 |
| Greenville | 08:35:15 | -71.5 | Dark | Down | 56.9 | 244.9 | Up | 08:20:15 - 08:50:15 | -772 |
| Gimple | 08:35:15 | -71.4 | Dark | Down | 56.9 | 245.0 | Up | 08:20:15 - 08:50:15 | -772 |
| Quincy | 08:35:15 | -71.6 | Dark | Down | 57.0 | 245.2 | Up | 08:20:15 - 08:50:15 | -794 |
| Portola | 08:35:13 | -71.6 | Dark | Down | 56.7 | 245.9 | Up | 08:20:13 - 08:50:13 | -807 |
| Reno | 08:35:11 | -71.6 | Dark | Down | 56.4 | 247.0 | Up | 08:20:11 - 08:50:11 | -836 |
| Carson City | 08:35:10 | -71.9 | Dark | Down | 56.5 | 247.5 | Up | 08:20:10 - 08:50:10 | -874 |
| Yerington | 08:35:08 | -71.8 | Dark | Down | 56.1 | 248.4 | Up | 08:20:08 - 08:50:08 | -895 |
| Gardnerville | 08:35:10 | -72.1 | Dark | Down | 56.6 | 247.9 | Up | 08:20:10 - 08:50:10 | -901 |
| Hawthorne | 08:35:06 | -71.9 | Dark | Down | 55.9 | 249.6 | Up | 08:20:06 - 08:50:06 | -945 |
| Tonopah | 08:35:01 | -71.6 | Dark | Down | 55.0 | 251.7 | Up | 08:20:01 - 08:50:01 | -993 |
| Lee Vining | 08:35:07 | -72.6 | Dark | Down | 56.5 | 249.9 | Up | 08:20:07 - 08:50:07 | -1006 |
| Bishop | 08:35:04 | -72.7 | Dark | Down | 56.1 | 251.5 | Up | 08:20:04 - 08:50:04 | -1070 |
| Beatty | 08:34:59 | -72.2 | Dark | Down | 55.0 | 253.7 | Up | 08:19:59 - 08:49:59 | -1118 |
| Indian Springs | 08:34:55 | -71.9 | Dark | Down | 54.3 | 255.1 | Up | 08:19:55 - 08:49:55 | -1150 |
| Henderson | 08:34:52 | -71.8 | Dark | Down | 53.9 | 256.4 | Up | 08:19:52 - 08:49:52 | -1206 |
| Searchlight/Boulder City | 08:34:51 | -72.1 | Dark | Down | 54.0 | 257.2 | Up | 08:19:51 - 08:49:51 | -1268 |
| Patrick | 08:34:48 | -71.5 | Dark | Down | 53.2 | 258.1 | Up | 08:19:48 - 08:49:48 | -1270 |
| Kingman/Dolan Springs | 08:34:48 | -71.8 | Dark | Down | 53.4 | 258.3 | Up | 08:19:48 - 08:49:48 | -1295 |
| CPSLO | 08:35:11 | -75.5 | Dark | Down | 58.5 | 252.3 | Up | 08:20:11 - 08:50:11 | -1295 |
| Laughlin/Bullhead City | 08:34:50 | -72.1 | Dark | Down | 53.8 | 257.9 | Up | 08:19:50 - 08:49:50 | -1300 |
| DCO | 08:34:45 | -71.2 | Dark | Down | 52.7 | 259.1 | Up | 08:19:45 - 08:49:45 | -1301 |
| Mohave Valley | 08:34:50 | -72.3 | Dark | Down | 53.8 | 258.2 | Up | 08:19:50 - 08:49:50 | -1330 |
| Lake Havasu City | 08:34:49 | -72.3 | Dark | Down | 53.7 | 259.0 | Up | 08:19:49 - 08:49:49 | -1372 |
| Parker | 08:34:49 | -72.5 | Dark | Down | 53.8 | 259.5 | Up | 08:19:49 - 08:49:49 | -1411 |
| Wildwood | 08:35:04 | -75.3 | Dark | Down | 57.2 | 256.1 | Up | 08:20:04 - 08:50:04 | -1427 |
| George/Scottsdale | 08:34:40 | -71.1 | Dark | Down | 51.9 | 261.8 | Up | 08:19:40 - 08:49:40 | -1446 |
| Idyllwild | 08:34:57 | -74.4 | Dark | Down | 55.8 | 258.2 | Up | 08:19:57 - 08:49:57 | -1463 |
| Blythe | 08:34:49 | -73.0 | Dark | Down | 54.1 | 260.0 | Up | 08:19:49 - 08:49:49 | -1469 |
| Calipatria | 08:34:52 | -73.9 | Dark | Down | 54.9 | 259.9 | Up | 08:19:52 - 08:49:52 | -1527 |
| Yuma | 08:34:49 | -73.6 | Dark | Down | 54.3 | 261.2 | Up | 08:19:49 - 08:49:49 | -1571 |
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 14UU228, (2026/12/15 08:38UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 9.88 98 44Zet Per 03:54:07.9 +31:53:01 2.8 10.65 91 32 Tau 03:56:52.2 +22:28:38 5.6 1.31 90 PPM 093159 04:00:40.7 +20:24:47 8.4 0.94 90 PPM 093127 03:58:36.3 +21:08:53 10.0 0.23 90 14UU228 03:59:21.3 +21:18:02 14.2 90 Positions are for J2000
Event circumstances last updated at 2020/07/26 21:48:56 UT
Marc W. Buie, Southwest Research Institute