Event between (552678) 10JG210 and star GA0780:17818761 with event index number of 2224779
Geocentric closest approach at 2027/09/02 03:05:46 UTC
J2000 position of star is 19:00:17.7 -10:44:23
Equinox of date position of star is 19:01:33.7 -10:42:22
Stellar brightness G=12.5,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 107 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 17.4 AU from the Sun
and 16.8 AU from the Earth.
The TNO is moving 12.5
km/sec on the sky relative to the star, or,
3.7 arcsec/hr.
The 1-sigma error in the time of the event is 163 seconds.
The 1-sigma cross-track error in the shadow position is
2781 km.
The sky-plane scale is
12174.4 km/arcsec.
The TNO has an absolute magnitude Hv=8.5
Diameter=114.3 km assuming a 5% albedo -- 9.4 sec chord
Diameter=46.7 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
Star training set for 552678, (2027/09/02 03:04UT) Object RA Dec mag sep mel Antares 16:31:06.5 -26:29:27 0.9 38.85 71 Nunki 18:56:58.7 -26:15:35 2.0 15.60 103 PPM 235005 18:48:14.9 -10:05:36 5.9 3.39 104 PPM 235315 19:00:58.4 -10:32:25 8.5 0.26 107 PPM 235348 19:01:57.2 -10:51:37 9.4 0.16 107 552678 19:01:49.6 -10:41:57 12.5 107 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 0.0 km
RECON observability=0.0 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 03:01:55 | -1.9 | CT | Up | 27.6 | 155.5 | Low | 02:47:51 - 03:15:59 | 8046 |
| Kamloops | 03:01:35 | -3.2 | CT | Down | 26.4 | 159.1 | Low | 02:47:31 - 03:15:39 | 7937 |
| Peachland | 03:01:36 | -3.8 | CT | Down | 27.4 | 159.6 | Low | 02:47:32 - 03:15:40 | 7893 |
| Summerland | 03:01:39 | -3.9 | CT | Down | 27.6 | 159.6 | Low | 02:47:35 - 03:15:43 | 7886 |
| The Dalles | 03:02:03 | -4.1 | CT | Down | 30.9 | 157.3 | Up | 02:47:59 - 03:16:07 | 7882 |
| Kelowna | 03:01:34 | -3.9 | CT | Down | 27.4 | 159.9 | Low | 02:47:30 - 03:15:38 | 7881 |
| Penticton | 03:01:39 | -4.0 | CT | Down | 27.6 | 159.8 | Low | 02:47:35 - 03:15:43 | 7880 |
| Ellensburg | 03:01:55 | -4.1 | CT | Down | 29.8 | 158.3 | Low | 02:47:51 - 03:15:59 | 7879 |
| Manson/Chelan | 03:01:48 | -4.1 | CT | Down | 29.1 | 158.8 | Low | 02:47:44 - 03:15:52 | 7878 |
| Wenatchee | 03:01:48 | -4.1 | CT | Down | 29.5 | 158.6 | Low | 02:47:44 - 03:15:52 | 7877 |
| Oliver | 03:01:41 | -4.1 | CT | Down | 28.0 | 159.7 | Low | 02:47:37 - 03:15:45 | 7873 |
| Sisters | 03:02:12 | -4.2 | CT | Down | 32.0 | 156.6 | Up | 02:48:08 - 03:16:16 | 7872 |
| Yakima | 03:01:56 | -4.2 | CT | Down | 30.2 | 158.2 | Up | 02:47:52 - 03:16:00 | 7872 |
| Maupin | 03:02:04 | -4.3 | CT | Down | 31.4 | 157.3 | Up | 02:48:00 - 03:16:08 | 7867 |
| Brewster | 03:01:46 | -4.3 | CT | Down | 29.0 | 159.3 | Low | 02:47:42 - 03:15:50 | 7864 |
| Anarchist Mountain Observatory | 03:01:38 | -4.3 | CT | Down | 28.2 | 159.9 | Low | 02:47:34 - 03:15:42 | 7861 |
| Okanogan | 03:01:45 | -4.3 | CT | Down | 28.7 | 159.5 | Low | 02:47:41 - 03:15:49 | 7859 |
| Toppenish/White Swan | 03:01:57 | -4.4 | CT | Down | 30.4 | 158.3 | Up | 02:47:53 - 03:16:01 | 7858 |
| Oregon Observatory | 03:02:15 | -4.4 | CT | Down | 32.5 | 156.6 | Up | 02:48:11 - 03:16:19 | 7856 |
| Bend | 03:02:13 | -4.5 | CT | Down | 32.3 | 156.8 | Up | 02:48:09 - 03:16:17 | 7853 |
| Chiloquin | 03:02:23 | -4.5 | CT | Down | 33.5 | 155.9 | Up | 02:48:19 - 03:16:27 | 7845 |
| Klamath Falls | 03:02:24 | -4.7 | CT | Down | 33.9 | 155.9 | Up | 02:48:20 - 03:16:28 | 7832 |
| Fall River/Burney | 03:02:31 | -5.3 | CT | Down | 35.1 | 156.0 | Up | 02:48:27 - 03:16:35 | 7779 |
| PNWRO | 03:01:54 | -5.5 | CT | Down | 31.1 | 159.9 | Up | 02:47:50 - 03:15:58 | 7774 |
| Greenville | 03:02:32 | -5.9 | CT | Down | 36.1 | 156.3 | Up | 02:48:28 - 03:16:36 | 7728 |
| Cedarville | 03:02:22 | -6.0 | NT | Down | 35.0 | 157.5 | Up | 02:48:18 - 03:16:26 | 7726 |
| Gimple | 03:02:32 | -5.9 | CT | Down | 36.1 | 156.4 | Up | 02:48:28 - 03:16:36 | 7723 |
| Quincy | 03:02:34 | -5.9 | CT | Down | 36.2 | 156.2 | Up | 02:48:30 - 03:16:38 | 7721 |
| Portola | 03:02:31 | -6.3 | NT | Down | 36.5 | 156.7 | Up | 02:48:27 - 03:16:35 | 7691 |
| Reno | 03:02:32 | -6.9 | NT | Down | 36.9 | 157.4 | Up | 02:48:28 - 03:16:36 | 7646 |
| Carson City | 03:02:34 | -7.0 | NT | Down | 37.3 | 157.3 | Up | 02:48:30 - 03:16:38 | 7633 |
| Gardnerville | 03:02:34 | -7.1 | NT | Down | 37.5 | 157.3 | Up | 02:48:30 - 03:16:38 | 7622 |
| Yerington | 03:02:31 | -7.5 | NT | Down | 37.6 | 158.0 | Up | 02:48:27 - 03:16:35 | 7590 |
| Lee Vining | 03:02:37 | -7.9 | NT | Down | 38.6 | 157.8 | Up | 02:48:33 - 03:16:41 | 7554 |
| Hawthorne | 03:02:31 | -8.0 | NT | Down | 38.2 | 158.5 | Up | 02:48:27 - 03:16:35 | 7544 |
| Bishop | 03:02:36 | -8.6 | NT | Down | 39.4 | 158.5 | Up | 02:48:32 - 03:16:40 | 7489 |
| Wildwood | 03:02:55 | -9.4 | NT | Down | 42.4 | 157.3 | Up | 02:48:51 - 03:16:59 | 7377 |
| Beatty | 03:02:31 | -9.9 | NT | Down | 40.3 | 160.3 | Up | 02:48:27 - 03:16:35 | 7375 |
| Sleaford | 03:00:38 | -10.8 | NT | Down | 27.0 | 174.7 | Low | 02:46:34 - 03:14:42 | 7269 |
| Idyllwild | 03:02:49 | -11.0 | NT | Down | 43.3 | 159.5 | Up | 02:48:45 - 03:16:53 | 7246 |
| Laughlin/Bullhead City | 03:02:30 | -12.2 | AT | Down | 42.5 | 162.6 | Up | 02:48:26 - 03:16:34 | 7171 |
| Calipatria | 03:02:45 | -12.1 | AT | Down | 44.2 | 160.8 | Up | 02:48:41 - 03:16:49 | 7144 |
| Patrick | 03:02:25 | -12.6 | AT | Down | 42.4 | 163.6 | Up | 02:48:21 - 03:16:29 | 7137 |
| Lake Havasu City | 03:02:33 | -12.6 | AT | Down | 43.2 | 162.8 | Up | 02:48:29 - 03:16:37 | 7127 |
| Yuma | 03:02:44 | -13.0 | AT | Down | 44.8 | 161.9 | Up | 02:48:40 - 03:16:48 | 7068 |
| George/Scottsdale | 03:02:24 | -14.7 | AT | Down | 44.5 | 165.8 | Up | 02:48:20 - 03:16:28 | 6934 |
| Dunrhomin | 03:01:20 | -16.9 | AT | Down | 38.9 | 175.1 | Up | 02:47:16 - 03:15:24 | 6801 |
| CU-SBO | 03:01:23 | -16.9 | AT | Down | 39.1 | 175.0 | Up | 02:47:19 - 03:15:27 | 6796 |
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 552678, (2027/09/02 03:04UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 38.85 71 Nunki 18:55:15.9 -26:17:49 2.0 15.60 103 PPM 235005 18:46:43.3 -10:07:30 5.9 3.39 104 PPM 235315 18:59:26.6 -10:34:49 8.5 0.26 107 PPM 235348 19:00:25.3 -10:54:03 9.4 0.16 107 552678 19:00:17.7 -10:44:23 12.5 107 Positions are for J2000
Event circumstances last updated at 2022/11/23 02:54:41 UT
Marc W. Buie, Southwest Research Institute