Event between (534161) 14RQ63 and star GA1080:01535221 with event index number of 2175481
Geocentric closest approach at 2027/12/14 11:58:19 UTC
J2000 position of star is 05:57:54.4 +18:40:10
Equinox of date position of star is 05:59:12.3 +18:40:13
Stellar brightness G=13.3,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 8 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=22.3
[RECON map]
TNO is 31.7 AU from the Sun
and 30.8 AU from the Earth.
The TNO is moving 24.3
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 306 seconds.
The 1-sigma cross-track error in the shadow position is
1622 km.
The sky-plane scale is
22303.3 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 8.4 sec chord
Diameter=85.3 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
Star training set for 534161, (2027/12/14 11:51UT) Object RA Dec mag sep mel Betelgeuse 05:56:41.2 +07:24:36 0.4 11.28 19 Alhena 06:39:19.6 +16:22:23 1.9 9.76 11 57 Ori 05:56:36.0 +19:45:09 5.6 1.29 8 PPM 121663 05:59:22.6 +18:57:37 8.4 0.29 8 PPM 121683 06:00:11.3 +18:51:48 8.9 0.25 8 534161 05:59:33.0 +18:40:13 13.3 8 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
2.9 sigma about the mid-time.
The median site spacing is 26.1 km
RECON observability=1.0 and success probability=2.9%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 11:55:53 | -27.6 | Dark | Up | 29.0 | 263.4 | Low | 11:40:53 - 12:10:53 | 6125 |
| Kamloops | 11:56:11 | -36.6 | Dark | Up | 38.0 | 251.7 | Up | 11:41:11 - 12:11:11 | 5730 |
| Kelowna | 11:56:06 | -36.1 | Dark | Up | 37.7 | 253.1 | Up | 11:41:06 - 12:11:06 | 5679 |
| Peachland | 11:56:07 | -36.3 | Dark | Up | 38.0 | 253.0 | Up | 11:41:07 - 12:11:07 | 5664 |
| Summerland | 11:56:06 | -36.3 | Dark | Up | 37.9 | 253.1 | Up | 11:41:06 - 12:11:06 | 5654 |
| Penticton | 11:56:06 | -36.2 | Dark | Up | 37.9 | 253.3 | Up | 11:41:06 - 12:11:06 | 5650 |
| Oliver | 11:56:05 | -36.2 | Dark | Up | 38.0 | 253.6 | Up | 11:41:05 - 12:11:05 | 5621 |
| Anarchist Mountain Observatory | 11:56:04 | -36.1 | Dark | Up | 37.9 | 253.9 | Up | 11:41:04 - 12:11:04 | 5610 |
| Tonasket | 11:56:03 | -36.2 | Dark | Up | 38.1 | 254.0 | Up | 11:41:03 - 12:11:03 | 5583 |
| Okanogan | 11:56:03 | -36.3 | Dark | Up | 38.2 | 254.1 | Up | 11:41:03 - 12:11:03 | 5551 |
| Brewster | 11:56:02 | -36.5 | Dark | Up | 38.5 | 254.2 | Up | 11:41:02 - 12:11:02 | 5524 |
| Manson/Chelan | 11:56:02 | -36.8 | Dark | Up | 38.7 | 254.0 | Up | 11:41:02 - 12:11:02 | 5499 |
| Victoria | 11:56:11 | -38.8 | Dark | Up | 40.6 | 250.5 | Up | 11:41:11 - 12:11:11 | 5491 |
| Wenatchee | 11:56:01 | -36.9 | Dark | Up | 39.0 | 254.2 | Up | 11:41:01 - 12:11:01 | 5455 |
| Ellensburg | 11:56:01 | -37.1 | Dark | Up | 39.2 | 254.3 | Up | 11:41:01 - 12:11:01 | 5414 |
| Yakima | 11:56:00 | -37.2 | Dark | Up | 39.4 | 254.6 | Up | 11:41:00 - 12:11:00 | 5379 |
| Toppenish/White Swan | 11:55:59 | -37.1 | Dark | Up | 39.3 | 255.0 | Up | 11:40:59 - 12:10:59 | 5363 |
| PNWRO | 11:55:55 | -36.1 | Dark | Up | 38.4 | 256.5 | Up | 11:40:55 - 12:10:55 | 5362 |
| Goldendale | 11:55:58 | -37.4 | Dark | Up | 39.7 | 255.0 | Up | 11:40:58 - 12:10:58 | 5306 |
| The Dalles | 11:55:58 | -37.7 | Dark | Up | 40.1 | 254.9 | Up | 11:40:58 - 12:10:58 | 5279 |
| Maupin | 11:55:57 | -37.6 | Dark | Up | 40.1 | 255.3 | Up | 11:40:57 - 12:10:57 | 5244 |
| Dunrhomin | 11:55:17 | -25.8 | Dark | Up | 29.2 | 270.4 | Low | 11:40:17 - 12:10:17 | 5176 |
| Sisters | 11:55:56 | -38.0 | Dark | Up | 40.7 | 255.6 | Up | 11:40:56 - 12:10:56 | 5155 |
| Bend | 11:55:55 | -37.9 | Dark | Up | 40.5 | 256.0 | Up | 11:40:55 - 12:10:55 | 5139 |
| Oregon Observatory | 11:55:55 | -38.0 | Dark | Up | 40.7 | 256.1 | Up | 11:40:55 - 12:10:55 | 5121 |
| North Lake | 11:55:51 | -37.6 | Dark | Up | 40.4 | 257.0 | Up | 11:40:51 - 12:10:51 | 5074 |
| Chiloquin | 11:55:52 | -38.4 | Dark | Up | 41.3 | 256.8 | Up | 11:40:52 - 12:10:52 | 4992 |
| Lakeview | 11:55:48 | -37.3 | Dark | Up | 40.3 | 258.4 | Up | 11:40:48 - 12:10:48 | 4989 |
| Klamath Falls | 11:55:51 | -38.3 | Dark | Up | 41.3 | 257.2 | Up | 11:40:51 - 12:10:51 | 4962 |
| Cedarville | 11:55:46 | -37.1 | Dark | Up | 40.3 | 259.0 | Up | 11:40:46 - 12:10:46 | 4933 |
| Fall River/Burney | 11:55:47 | -38.1 | Dark | Up | 41.3 | 258.5 | Up | 11:40:47 - 12:10:47 | 4861 |
| Susanville | 11:55:44 | -37.5 | Dark | Up | 40.9 | 259.6 | Up | 11:40:44 - 12:10:44 | 4818 |
| Gimple | 11:55:44 | -37.7 | Dark | Up | 41.1 | 259.7 | Up | 11:40:44 - 12:10:44 | 4788 |
| Greenville | 11:55:44 | -37.8 | Dark | Up | 41.1 | 259.6 | Up | 11:40:44 - 12:10:44 | 4786 |
| Quincy | 11:55:44 | -37.7 | Dark | Up | 41.2 | 259.8 | Up | 11:40:44 - 12:10:44 | 4767 |
| Portola | 11:55:42 | -37.4 | Dark | Up | 40.8 | 260.2 | Up | 11:40:42 - 12:10:42 | 4766 |
| Reno | 11:55:41 | -36.9 | Dark | Up | 40.4 | 260.9 | Up | 11:40:41 - 12:10:41 | 4756 |
| Carson City | 11:55:40 | -36.9 | Dark | Up | 40.4 | 261.3 | Up | 11:40:40 - 12:10:40 | 4722 |
| Yerington | 11:55:38 | -36.4 | Dark | Up | 40.0 | 261.9 | Up | 11:40:38 - 12:10:38 | 4718 |
| Gardnerville | 11:55:39 | -36.8 | Dark | Up | 40.4 | 261.5 | Up | 11:40:39 - 12:10:39 | 4700 |
| Hawthorne | 11:55:36 | -35.9 | Dark | Up | 39.6 | 262.6 | Up | 11:40:36 - 12:10:36 | 4687 |
| Tonopah | 11:55:31 | -34.8 | Dark | Up | 38.6 | 264.0 | Up | 11:40:31 - 12:10:31 | 4676 |
| Lee Vining | 11:55:35 | -36.3 | Dark | Up | 40.1 | 262.8 | Up | 11:40:35 - 12:10:35 | 4622 |
| Bishop | 11:55:32 | -35.7 | Dark | Up | 39.6 | 263.7 | Up | 11:40:32 - 12:10:32 | 4582 |
| Beatty | 11:55:28 | -34.4 | Dark | Up | 38.4 | 265.2 | Up | 11:40:28 - 12:10:28 | 4577 |
| Indian Springs | 11:55:25 | -33.5 | Dark | Up | 37.5 | 266.1 | Up | 11:40:25 - 12:10:25 | 4572 |
| Henderson | 11:55:22 | -32.9 | Dark | Up | 37.0 | 267.0 | Up | 11:40:22 - 12:10:22 | 4538 |
| Patrick | 11:55:18 | -31.9 | Dark | Up | 36.1 | 268.1 | Up | 11:40:18 - 12:10:18 | 4507 |
| Kingman/Dolan Springs | 11:55:18 | -32.1 | Dark | Up | 36.3 | 268.2 | Up | 11:40:18 - 12:10:18 | 4481 |
| Laughlin/Bullhead City | 11:55:20 | -32.5 | Dark | Up | 36.7 | 267.9 | Up | 11:40:20 - 12:10:20 | 4465 |
| Mohave Valley | 11:55:19 | -32.4 | Dark | Up | 36.7 | 268.1 | Up | 11:40:19 - 12:10:19 | 4439 |
| Lake Havasu City | 11:55:18 | -32.2 | Dark | Up | 36.5 | 268.5 | Up | 11:40:18 - 12:10:18 | 4407 |
| George/Scottsdale | 11:55:11 | -30.1 | Dark | Up | 34.5 | 270.5 | Up | 11:40:11 - 12:10:11 | 4396 |
| Parker | 11:55:17 | -32.1 | Dark | Up | 36.5 | 268.8 | Up | 11:40:17 - 12:10:17 | 4373 |
| Idyllwild | 11:55:21 | -34.1 | Dark | Up | 38.5 | 267.7 | Up | 11:40:21 - 12:10:21 | 4272 |
| Wildwood | 11:55:25 | -35.6 | Dark | Up | 40.1 | 266.3 | Up | 11:40:25 - 12:10:25 | 4260 |
| Calipatria | 11:55:17 | -33.0 | Dark | Up | 37.6 | 268.9 | Up | 11:40:17 - 12:10:17 | 4242 |
| Yuma | 11:55:14 | -32.2 | Dark | Up | 36.8 | 269.7 | Up | 11:40:14 - 12:10:14 | 4223 |
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 534161, (2027/12/14 11:51UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 11.28 19 Alhena 06:37:42.8 +16:23:57 1.9 9.76 11 57 Ori 05:54:56.6 +19:44:58 5.6 1.29 8 PPM 121663 05:57:43.8 +18:57:34 8.4 0.29 8 PPM 121683 05:58:32.6 +18:51:47 8.9 0.25 8 534161 05:57:54.4 +18:40:10 13.3 8 Positions are for J2000
Event circumstances last updated at 2022/02/03 00:26:15 UT
Marc W. Buie, Southwest Research Institute