Event between (523776) 14YB50 and star GA1200:03283283 with event index number of 1646194
Geocentric closest approach at 2026/12/21 12:05:35 UTC
J2000 position of star is 09:26:01.8 +30:57:51
Equinox of date position of star is 09:27:16.2 +30:52:24
Stellar brightness G=11.6,
use SENSEUP=8
Star is 79 degrees from the moon.
Moon is 90% illuminated.
TNO apparent brightness V=25.8
[RECON map]
TNO is 37.7 AU from the Sun
and 37.0 AU from the Earth.
The TNO is moving 18.6
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 256 seconds.
The 1-sigma cross-track error in the shadow position is
3878 km.
The sky-plane scale is
26821.6 km/arcsec.
The TNO has an absolute magnitude Hv=10.0
Diameter=366.5 km assuming a 5% albedo -- 3.2 sec chord
Diameter=149.6 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 523776, (2026/12/21 12:06UT) Object RA Dec mag sep mel Regulus 10:09:48.4 +11:50:04 1.3 21.37 96 PPM 099676 09:34:52.7 +28:14:49 6.4 3.04 82 PPM 074553 09:31:48.0 +31:12:28 7.9 0.96 80 PPM 074501 09:27:35.5 +31:11:53 9.8 0.35 79 523776 09:27:38.1 +30:50:47 11.6 80 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
3.5 sigma about the mid-time.
The median site spacing is 14.2 km
RECON observability=1.0 and success probability=7.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Niwot | 12:04:56 | -24.8 | Dark | Down | 68.1 | 253.1 | Up | 11:49:56 - 12:19:56 | 4937 |
| SwRI | 12:04:56 | -24.9 | Dark | Down | 68.2 | 253.2 | Up | 11:49:56 - 12:19:56 | 4924 |
| Clarence Fulton | 12:06:20 | -35.1 | Dark | Up | 69.1 | 206.9 | Up | 11:51:20 - 12:21:20 | 4732 |
| Kelowna | 12:06:18 | -35.2 | Dark | Up | 69.5 | 207.0 | Up | 11:51:18 - 12:21:18 | 4698 |
| Peachland | 12:06:18 | -35.4 | Dark | Up | 69.7 | 206.4 | Up | 11:51:18 - 12:21:18 | 4675 |
| Penticton | 12:06:18 | -35.3 | Dark | Up | 69.8 | 207.1 | Up | 11:51:18 - 12:21:18 | 4671 |
| Summerland | 12:06:19 | -35.3 | Dark | Up | 69.8 | 206.8 | Up | 11:51:19 - 12:21:19 | 4669 |
| Oliver | 12:06:17 | -35.3 | Dark | Up | 70.1 | 207.6 | Up | 11:51:17 - 12:21:17 | 4647 |
| Anarchist Mountain Observatory | 12:06:16 | -35.2 | Dark | Up | 70.2 | 208.2 | Up | 11:51:16 - 12:21:16 | 4646 |
| Tonasket | 12:06:15 | -35.3 | Dark | Up | 70.5 | 208.5 | Up | 11:51:15 - 12:21:15 | 4621 |
| Okanogan | 12:06:14 | -35.4 | Dark | Up | 70.8 | 208.6 | Up | 11:51:14 - 12:21:14 | 4590 |
| Brewster | 12:06:12 | -35.5 | Dark | Up | 71.1 | 208.4 | Up | 11:51:12 - 12:21:12 | 4561 |
| Manson/Chelan | 12:06:12 | -35.8 | Dark | Up | 71.4 | 207.8 | Up | 11:51:12 - 12:21:12 | 4526 |
| Entiat | 12:06:12 | -35.9 | Dark | Up | 71.7 | 207.9 | Up | 11:51:12 - 12:21:12 | 4507 |
| Wenatchee | 12:06:11 | -36.0 | Dark | Up | 71.9 | 208.0 | Up | 11:51:11 - 12:21:11 | 4484 |
| Pasco | 12:06:03 | -35.2 | Dark | Up | 72.5 | 212.9 | Up | 11:51:03 - 12:21:03 | 4472 |
| PNWRO | 12:06:02 | -35.1 | Dark | Up | 72.6 | 213.9 | Up | 11:51:02 - 12:21:02 | 4468 |
| Ellensburg | 12:06:11 | -36.1 | Dark | Up | 72.4 | 208.1 | Up | 11:51:11 - 12:21:11 | 4444 |
| Yakima | 12:06:09 | -36.2 | Dark | Up | 72.7 | 208.6 | Up | 11:51:09 - 12:21:09 | 4414 |
| Toppenish/White Swan | 12:06:08 | -36.1 | Dark | Up | 72.9 | 209.4 | Up | 11:51:08 - 12:21:08 | 4408 |
| Victoria | 12:06:25 | -37.9 | Dark | Up | 71.7 | 198.8 | Up | 11:51:25 - 12:21:25 | 4396 |
| Goldendale | 12:06:05 | -36.4 | Dark | Up | 73.5 | 209.1 | Up | 11:51:05 - 12:21:05 | 4346 |
| The Dalles | 12:06:05 | -36.7 | Dark | Up | 73.8 | 208.4 | Up | 11:51:05 - 12:21:05 | 4309 |
| Maupin | 12:06:03 | -36.6 | Dark | Up | 74.1 | 209.4 | Up | 11:51:03 - 12:21:03 | 4286 |
| Redmond | 12:05:59 | -36.7 | Dark | Up | 75.0 | 210.7 | Up | 11:50:59 - 12:20:59 | 4216 |
| Sisters | 12:06:01 | -37.0 | Dark | Up | 75.1 | 209.5 | Up | 11:51:01 - 12:21:01 | 4194 |
| Bend | 12:05:59 | -36.8 | Dark | Up | 75.2 | 210.7 | Up | 11:50:59 - 12:20:59 | 4192 |
| Oregon Observatory | 12:05:59 | -36.9 | Dark | Up | 75.4 | 210.6 | Up | 11:50:59 - 12:20:59 | 4172 |
| North Lake | 12:05:55 | -36.6 | Dark | Up | 75.7 | 213.6 | Up | 11:50:55 - 12:20:55 | 4157 |
| La Pine/Gilchrist | 12:05:58 | -37.0 | Dark | Up | 75.6 | 210.9 | Up | 11:50:58 - 12:20:58 | 4153 |
| Paisley | 12:05:51 | -36.3 | Dark | Up | 76.0 | 215.9 | Up | 11:50:51 - 12:20:51 | 4139 |
| Lakeview | 12:05:48 | -36.2 | Dark | Up | 76.4 | 217.7 | Up | 11:50:48 - 12:20:48 | 4114 |
| DCO | 12:04:54 | -30.2 | Dark | Down | 75.5 | 258.1 | Up | 11:49:54 - 12:19:54 | 4079 |
| Cedarville | 12:05:44 | -36.1 | Dark | Up | 76.8 | 219.9 | Up | 11:50:44 - 12:20:44 | 4078 |
| George/Scottsdale | 12:04:43 | -29.0 | Dark | Down | 74.6 | 264.6 | Up | 11:49:43 - 12:19:43 | 4074 |
| Patrick | 12:04:59 | -30.8 | Dark | Up | 75.9 | 256.1 | Up | 11:49:59 - 12:19:59 | 4051 |
| Klamath Falls | 12:05:52 | -37.2 | Dark | Up | 76.9 | 213.0 | Up | 11:50:52 - 12:20:52 | 4032 |
| Kingman/Dolan Springs | 12:04:59 | -30.9 | Dark | Up | 76.2 | 256.7 | Up | 11:49:59 - 12:19:59 | 4023 |
| Henderson | 12:05:06 | -31.8 | Dark | Up | 76.6 | 252.0 | Up | 11:50:06 - 12:20:06 | 4020 |
| Tonopah | 12:05:20 | -33.7 | Dark | Up | 77.4 | 239.6 | Up | 11:50:20 - 12:20:20 | 4015 |
| Indian Springs | 12:05:09 | -32.4 | Dark | Up | 77.0 | 248.6 | Up | 11:50:09 - 12:20:09 | 4011 |
| Laughlin/Bullhead City | 12:05:00 | -31.3 | Dark | Up | 76.6 | 256.1 | Up | 11:50:00 - 12:20:00 | 3986 |
| Searchlight/Boulder City | 12:05:01 | -31.7 | Dark | Up | 76.8 | 254.4 | Up | 11:50:01 - 12:20:01 | 3983 |
| Fall River/Burney | 12:05:48 | -37.0 | Dark | Up | 77.8 | 217.3 | Up | 11:50:48 - 12:20:48 | 3968 |
| Mohave Valley | 12:04:57 | -31.3 | Dark | Up | 76.6 | 257.2 | Up | 11:49:57 - 12:19:57 | 3967 |
| Susanville | 12:05:43 | -36.4 | Dark | Up | 77.9 | 221.6 | Up | 11:50:43 - 12:20:43 | 3967 |
| Beatty | 12:05:14 | -33.3 | Dark | Up | 77.6 | 245.2 | Up | 11:50:14 - 12:20:14 | 3962 |
| Hawthorne | 12:05:26 | -34.8 | Dark | Up | 78.0 | 234.2 | Up | 11:50:26 - 12:20:26 | 3957 |
| Yerington | 12:05:30 | -35.3 | Dark | Up | 78.1 | 231.0 | Up | 11:50:30 - 12:20:30 | 3957 |
| Lake Havasu City | 12:04:55 | -31.1 | Dark | Up | 76.5 | 259.1 | Up | 11:49:55 - 12:19:55 | 3956 |
| Reno | 12:05:35 | -35.8 | Dark | Up | 78.1 | 227.0 | Up | 11:50:35 - 12:20:35 | 3956 |
| Portola | 12:05:38 | -36.3 | Dark | Up | 78.3 | 224.1 | Up | 11:50:38 - 12:20:38 | 3934 |
| Gimple | 12:05:40 | -36.6 | Dark | Up | 78.2 | 221.7 | Up | 11:50:40 - 12:20:40 | 3934 |
| Parker | 12:04:53 | -31.0 | Dark | Up | 76.6 | 260.6 | Up | 11:49:53 - 12:19:53 | 3934 |
| Carson City | 12:05:33 | -35.8 | Dark | Up | 78.3 | 228.4 | Up | 11:50:33 - 12:20:33 | 3931 |
| Greenville | 12:05:41 | -36.7 | Dark | Up | 78.3 | 221.4 | Up | 11:50:41 - 12:20:41 | 3929 |
| Gardnerville | 12:05:34 | -35.7 | Dark | Up | 78.5 | 229.4 | Up | 11:50:34 - 12:20:34 | 3916 |
| Quincy | 12:05:40 | -36.6 | Dark | Up | 78.4 | 222.1 | Up | 11:50:40 - 12:20:40 | 3914 |
| Bishop | 12:05:21 | -34.6 | Dark | Up | 78.5 | 239.4 | Up | 11:50:21 - 12:20:21 | 3888 |
| Lee Vining | 12:05:27 | -35.2 | Dark | Up | 78.7 | 235.0 | Up | 11:50:27 - 12:20:27 | 3885 |
| Blythe | 12:04:52 | -31.2 | Dark | Up | 76.9 | 262.5 | Up | 11:49:52 - 12:19:52 | 3876 |
| Yuma | 12:04:48 | -31.1 | Dark | Down | 77.0 | 266.4 | Up | 11:49:48 - 12:19:48 | 3807 |
| Calipatria | 12:04:52 | -31.9 | Dark | Up | 77.7 | 263.7 | Up | 11:49:52 - 12:19:52 | 3776 |
| Idyllwild | 12:05:00 | -32.9 | Dark | Up | 78.6 | 259.5 | Up | 11:50:00 - 12:20:00 | 3738 |
| Wildwood | 12:05:08 | -34.5 | Dark | Up | 80.0 | 254.8 | Up | 11:50:08 - 12:20:08 | 3636 |
| CPSLO | 12:05:19 | -36.2 | Dark | Up | 81.1 | 243.3 | Up | 11:50:19 - 12:20:19 | 3588 |
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 523776, (2026/12/21 12:06UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 21.37 96 PPM 099676 09:33:18.2 +28:22:04 6.4 3.04 82 PPM 074553 09:30:11.9 +31:19:38 7.9 0.96 80 PPM 074501 09:25:59.0 +31:18:57 9.8 0.35 79 523776 09:26:01.8 +30:57:51 11.6 79 Positions are for J2000
Event circumstances last updated at 2020/10/30 22:46:25 UT
Marc W. Buie, Southwest Research Institute