Event between (558168) 14XQ40 and star GA0640:06815365 with event index number of 2629211
Geocentric closest approach at 2027/05/21 06:05:10 UTC
J2000 position of star is 15:16:58.1 -25:35:17
Equinox of date position of star is 15:18:16.7 -25:40:05
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 16 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 23.5 AU from the Sun
and 22.5 AU from the Earth.
The TNO is moving 22.5
km/sec on the sky relative to the star, or,
5.0 arcsec/hr.
The 1-sigma error in the time of the event is 166 seconds.
The 1-sigma cross-track error in the shadow position is
1828 km.
The sky-plane scale is
16303.7 km/arcsec.
The TNO has an absolute magnitude Hv=8.9
Diameter=98.2 km assuming a 5% albedo -- 4.4 sec chord
Diameter=40.1 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
Star training set for 558168, (2027/05/21 06:05UT) Object RA Dec mag sep mel Antares 16:31:05.5 -26:29:25 0.9 16.28 1 7Del Sco 16:01:57.5 -22:41:51 2.3 10.33 7 PPM 263974 15:15:31.1 -26:17:39 5.4 0.92 16 PPM 264059 15:19:17.7 -26:21:09 8.1 0.68 16 PPM 264045 15:18:29.6 -25:44:17 9.5 0.06 16 558168 15:18:35.6 -25:41:14 16.5 15 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
5.0 sigma about the mid-time.
The median site spacing is 4.0 km
RECON observability=0.5 and success probability=8.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 06:06:58 | -16.8 | AT | Up | 12.2 | 175.6 | Really Low | 05:52:37 - 06:21:19 | 3010 |
| Dunrhomin | 06:06:53 | -28.5 | Dark | Up | 24.1 | 176.0 | Low | 05:52:32 - 06:21:14 | 2619 |
| Kamloops | 06:07:38 | -15.1 | AT | Up | 11.9 | 162.5 | Really Low | 05:53:17 - 06:21:59 | 2548 |
| Kelowna | 06:07:36 | -16.1 | AT | Up | 12.8 | 163.3 | Really Low | 05:53:15 - 06:21:57 | 2547 |
| Peachland | 06:07:37 | -16.1 | AT | Up | 12.9 | 163.0 | Really Low | 05:53:16 - 06:21:58 | 2533 |
| Penticton | 06:07:37 | -16.4 | AT | Up | 13.1 | 163.2 | Really Low | 05:53:16 - 06:21:58 | 2532 |
| Summerland | 06:07:37 | -16.3 | AT | Up | 13.1 | 163.1 | Really Low | 05:53:16 - 06:21:58 | 2531 |
| Anarchist Mountain Observatory | 06:07:36 | -16.9 | AT | Up | 13.7 | 163.3 | Really Low | 05:53:15 - 06:21:57 | 2519 |
| Oliver | 06:07:37 | -16.7 | AT | Up | 13.5 | 163.1 | Really Low | 05:53:16 - 06:21:58 | 2519 |
| Tonasket | 06:07:37 | -17.2 | AT | Up | 14.0 | 163.2 | Really Low | 05:53:16 - 06:21:58 | 2504 |
| Okanogan | 06:07:38 | -17.4 | AT | Up | 14.3 | 163.1 | Really Low | 05:53:17 - 06:21:59 | 2486 |
| Brewster | 06:07:39 | -17.6 | AT | Up | 14.5 | 162.9 | Really Low | 05:53:18 - 06:22:00 | 2468 |
| Manson/Chelan | 06:07:40 | -17.7 | AT | Up | 14.6 | 162.5 | Really Low | 05:53:19 - 06:22:01 | 2448 |
| Wenatchee | 06:07:40 | -18.0 | Dark | Up | 15.0 | 162.3 | Really Low | 05:53:19 - 06:22:01 | 2422 |
| PNWRO | 06:07:37 | -19.7 | Dark | Up | 16.7 | 163.5 | Really Low | 05:53:16 - 06:21:58 | 2412 |
| Ellensburg | 06:07:41 | -18.3 | Dark | Up | 15.4 | 162.1 | Really Low | 05:53:20 - 06:22:02 | 2397 |
| Yakima | 06:07:41 | -18.7 | Dark | Up | 15.8 | 162.0 | Really Low | 05:53:20 - 06:22:02 | 2379 |
| Toppenish/White Swan | 06:07:41 | -18.9 | Dark | Up | 16.0 | 162.2 | Really Low | 05:53:20 - 06:22:02 | 2376 |
| Victoria | 06:07:48 | -16.1 | AT | Up | 13.3 | 159.6 | Really Low | 05:53:27 - 06:22:09 | 2362 |
| Goldendale | 06:07:42 | -19.3 | Dark | Up | 16.4 | 161.7 | Really Low | 05:53:21 - 06:22:03 | 2337 |
| The Dalles | 06:07:44 | -19.4 | Dark | Up | 16.6 | 161.4 | Really Low | 05:53:23 - 06:22:05 | 2314 |
| Maupin | 06:07:44 | -19.8 | Dark | Up | 17.0 | 161.4 | Really Low | 05:53:23 - 06:22:05 | 2299 |
| Sisters | 06:07:45 | -20.4 | Dark | Up | 17.7 | 160.9 | Really Low | 05:53:24 - 06:22:06 | 2241 |
| Bend | 06:07:45 | -20.7 | Dark | Up | 18.0 | 161.1 | Really Low | 05:53:24 - 06:22:06 | 2239 |
| Oregon Observatory | 06:07:45 | -20.8 | Dark | Up | 18.1 | 161.0 | Really Low | 05:53:24 - 06:22:06 | 2226 |
| North Lake | 06:07:44 | -21.5 | Dark | Up | 18.9 | 161.4 | Really Low | 05:53:23 - 06:22:05 | 2216 |
| Lakeview | 06:07:43 | -22.7 | Dark | Up | 20.0 | 161.8 | Really Low | 05:53:22 - 06:22:04 | 2185 |
| Cedarville | 06:07:43 | -23.3 | Dark | Up | 20.7 | 161.9 | Low | 05:53:22 - 06:22:04 | 2158 |
| Chiloquin | 06:07:47 | -21.8 | Dark | Up | 19.3 | 160.5 | Really Low | 05:53:26 - 06:22:08 | 2146 |
| Klamath Falls | 06:07:47 | -22.1 | Dark | Up | 19.6 | 160.5 | Really Low | 05:53:26 - 06:22:08 | 2132 |
| Tonopah | 06:07:34 | -27.4 | Dark | Up | 24.6 | 164.2 | Low | 05:53:13 - 06:21:55 | 2091 |
| Fall River/Burney | 06:07:47 | -23.3 | Dark | Up | 20.8 | 160.7 | Low | 05:53:26 - 06:22:08 | 2087 |
| Susanville | 06:07:45 | -24.1 | Dark | Up | 21.6 | 161.3 | Low | 05:53:24 - 06:22:06 | 2083 |
| Patrick | 06:07:22 | -30.9 | Dark | Up | 27.8 | 167.1 | Low | 05:53:01 - 06:21:43 | 2073 |
| Reno | 06:07:42 | -25.2 | Dark | Up | 22.6 | 162.0 | Low | 05:53:21 - 06:22:03 | 2069 |
| Indian Springs | 06:07:29 | -29.3 | Dark | Up | 26.4 | 165.5 | Low | 05:53:08 - 06:21:50 | 2068 |
| Yerington | 06:07:40 | -25.9 | Dark | Up | 23.3 | 162.5 | Low | 05:53:19 - 06:22:01 | 2065 |
| Henderson | 06:07:26 | -30.0 | Dark | Up | 27.0 | 166.1 | Low | 05:53:05 - 06:21:47 | 2065 |
| Hawthorne | 06:07:38 | -26.5 | Dark | Up | 23.9 | 162.9 | Low | 05:53:17 - 06:21:59 | 2061 |
| Gimple | 06:07:45 | -24.3 | Dark | Up | 21.8 | 161.1 | Low | 05:53:24 - 06:22:06 | 2060 |
| Portola | 06:07:44 | -24.7 | Dark | Up | 22.2 | 161.4 | Low | 05:53:23 - 06:22:05 | 2058 |
| Greenville | 06:07:45 | -24.2 | Dark | Up | 21.8 | 161.0 | Low | 05:53:24 - 06:22:06 | 2057 |
| Kingman/Dolan Springs | 06:07:23 | -31.1 | Dark | Up | 28.0 | 166.9 | Low | 05:53:02 - 06:21:44 | 2053 |
| George/Scottsdale | 06:07:14 | -33.1 | Dark | Up | 29.8 | 169.0 | Low | 05:52:53 - 06:21:35 | 2053 |
| Carson City | 06:07:42 | -25.5 | Dark | Up | 23.0 | 161.9 | Low | 05:53:21 - 06:22:03 | 2051 |
| Quincy | 06:07:46 | -24.4 | Dark | Up | 22.0 | 161.0 | Low | 05:53:25 - 06:22:07 | 2046 |
| Beatty | 06:07:31 | -28.6 | Dark | Up | 25.8 | 164.5 | Low | 05:53:10 - 06:21:52 | 2044 |
| Gardnerville | 06:07:42 | -25.7 | Dark | Up | 23.2 | 162.0 | Low | 05:53:21 - 06:22:03 | 2040 |
| Laughlin/Bullhead City | 06:07:25 | -30.9 | Dark | Up | 28.0 | 166.4 | Low | 05:53:04 - 06:21:46 | 2031 |
| Mohave Valley | 06:07:24 | -31.2 | Dark | Up | 28.2 | 166.4 | Low | 05:53:03 - 06:21:45 | 2016 |
| Lee Vining | 06:07:39 | -26.8 | Dark | Up | 24.3 | 162.4 | Low | 05:53:18 - 06:22:00 | 2011 |
| Bishop | 06:07:38 | -27.6 | Dark | Up | 25.0 | 163.0 | Low | 05:53:17 - 06:21:59 | 2006 |
| Lake Havasu City | 06:07:23 | -31.6 | Dark | Up | 28.7 | 166.6 | Low | 05:53:02 - 06:21:44 | 2003 |
| Parker | 06:07:23 | -32.0 | Dark | Up | 29.0 | 166.6 | Low | 05:53:02 - 06:21:44 | 1983 |
| Yuma | 06:07:24 | -33.2 | Dark | Up | 30.3 | 166.0 | Up | 05:53:03 - 06:21:45 | 1884 |
| Calipatria | 06:07:28 | -32.4 | Dark | Up | 29.7 | 165.2 | Low | 05:53:07 - 06:21:49 | 1874 |
| Idyllwild | 06:07:32 | -31.5 | Dark | Up | 28.9 | 164.1 | Low | 05:53:11 - 06:21:53 | 1865 |
| Wildwood | 06:07:39 | -30.4 | Dark | Up | 28.1 | 162.3 | Low | 05:53:18 - 06:22:00 | 1809 |
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 558168, (2027/05/21 06:05UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.28 1 7Del Sco 16:00:20.0 -22:37:19 2.3 10.33 7 PPM 263974 15:13:53.3 -26:11:37 5.4 0.92 16 PPM 264059 15:17:39.7 -26:15:13 8.1 0.68 16 PPM 264045 15:16:52.0 -25:38:20 9.5 0.06 16 558168 15:16:58.1 -25:35:17 16.5 16 Positions are for J2000
Event circumstances last updated at 2022/01/25 00:36:37 UT
Marc W. Buie, Southwest Research Institute