Event between (531017) 12BA155 and star GA0860:03851749 with event index number of 1600349
Geocentric closest approach at 2021/06/10 03:55:09 UTC
J2000 position of star is 10:18:44.6 -03:52:29
Equinox of date position of star is 10:19:48.5 -03:58:51
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 38.4 AU from the Sun
and 38.5 AU from the Earth.
The TNO is moving 12.9
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 168 seconds.
The 1-sigma cross-track error in the shadow position is
1690 km.
The sky-plane scale is
27951.2 km/arcsec.
The TNO has an absolute magnitude Hv=6.1
Diameter=356.5 km assuming a 5% albedo -- 27.5 sec chord
Diameter=145.5 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is 5:2EEE
Star training set for 531017, (2021/06/10 03:55UT) Object RA Dec mag sep mel Regulus 10:09:30.7 +11:51:42 1.3 16.05 73 Alphard 09:28:38.5 -08:45:09 2.0 13.58 73 25 Sex 10:24:31.5 -04:10:59 6.0 1.19 83 PPM 193270 10:18:36.8 -03:38:30 8.5 0.46 82 PPM 193294 10:19:41.8 -03:55:52 9.4 0.06 82 531017 10:19:49.7 -03:58:58 15.8 82 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) |
| Clarence Fulton | 04:00:03 | -0.1 | Sun up | Down | 23.6 | 230.1 | Low | 03:45:34 - 04:14:31 | -1642 |
| Kelowna | 04:00:04 | -0.2 | Sun up | Down | 24.0 | 230.1 | Low | 03:45:35 - 04:14:32 | -1670 |
| Peachland | 04:00:03 | -0.1 | Sun up | Down | 24.2 | 229.8 | Low | 03:45:34 - 04:14:31 | -1675 |
| Summerland | 04:00:03 | -0.3 | Sun up | Down | 24.2 | 230.0 | Low | 03:45:35 - 04:14:32 | -1688 |
| Penticton | 04:00:04 | -0.4 | Sun up | Down | 24.2 | 230.1 | Low | 03:45:36 - 04:14:33 | -1694 |
| Victoria | 03:59:52 | 1.1 | Sun up | Down | 26.8 | 226.7 | Low | 03:45:23 - 04:14:20 | -1718 |
| Oliver | 04:00:05 | -0.6 | Sun up | Down | 24.5 | 230.2 | Low | 03:45:37 - 04:14:34 | -1722 |
| Anarchist Mountain Observatory | 04:00:07 | -0.8 | CT | Down | 24.5 | 230.5 | Low | 03:45:39 - 04:14:36 | -1738 |
| Tonasket | 04:00:08 | -1.0 | CT | Down | 24.7 | 230.5 | Low | 03:45:39 - 04:14:36 | -1762 |
| Okanogan | 04:00:08 | -1.1 | CT | Down | 25.0 | 230.5 | Low | 03:45:40 - 04:14:37 | -1787 |
| Brewster | 04:00:09 | -1.1 | CT | Down | 25.3 | 230.4 | Low | 03:45:40 - 04:14:37 | -1806 |
| Manson/Chelan | 04:00:08 | -1.1 | CT | Down | 25.6 | 230.1 | Low | 03:45:39 - 04:14:36 | -1817 |
| Wenatchee | 04:00:08 | -1.3 | CT | Down | 26.0 | 230.1 | Low | 03:45:40 - 04:14:37 | -1853 |
| Ellensburg | 04:00:09 | -1.4 | CT | Down | 26.4 | 230.1 | Low | 03:45:40 - 04:14:37 | -1883 |
| Yakima | 04:00:10 | -1.6 | CT | Down | 26.6 | 230.2 | Low | 03:45:42 - 04:14:39 | -1916 |
| Toppenish/White Swan | 04:00:11 | -1.9 | CT | Down | 26.7 | 230.5 | Low | 03:45:43 - 04:14:40 | -1936 |
| Pasco | 04:00:17 | -2.6 | CT | Down | 26.0 | 231.7 | Low | 03:45:48 - 04:14:45 | -1966 |
| Goldendale | 04:00:11 | -2.0 | CT | Down | 27.2 | 230.3 | Low | 03:45:43 - 04:14:40 | -1975 |
| The Dalles | 04:00:10 | -1.9 | CT | Down | 27.6 | 230.0 | Low | 03:45:42 - 04:14:39 | -1989 |
| PNWRO | 04:00:19 | -2.9 | CT | Down | 26.1 | 232.1 | Low | 03:45:50 - 04:14:47 | -1990 |
| Maupin | 04:00:12 | -2.2 | CT | Down | 27.8 | 230.3 | Low | 03:45:44 - 04:14:41 | -2025 |
| Sisters | 04:00:12 | -2.4 | CT | Down | 28.6 | 230.2 | Low | 03:45:44 - 04:14:41 | -2091 |
| Redmond | 04:00:14 | -2.7 | CT | Down | 28.4 | 230.6 | Low | 03:45:45 - 04:14:42 | -2099 |
| Bend | 04:00:14 | -2.7 | CT | Down | 28.6 | 230.6 | Low | 03:45:46 - 04:14:43 | -2115 |
| Oregon Observatory | 04:00:14 | -2.8 | CT | Down | 28.8 | 230.5 | Low | 03:45:46 - 04:14:43 | -2128 |
| La Pine/Gilchrist | 04:00:14 | -2.8 | CT | Down | 29.0 | 230.5 | Low | 03:45:46 - 04:14:43 | -2144 |
| North Lake | 04:00:18 | -3.5 | CT | Down | 28.9 | 231.3 | Low | 03:45:50 - 04:14:47 | -2191 |
| Paisley | 04:00:21 | -4.0 | CT | Down | 29.0 | 231.9 | Low | 03:45:53 - 04:14:50 | -2245 |
| Klamath Falls | 04:00:17 | -3.5 | CT | Down | 30.0 | 230.9 | Up | 03:45:48 - 04:14:45 | -2265 |
| Lakeview | 04:00:23 | -4.4 | CT | Down | 29.2 | 232.3 | Low | 03:45:55 - 04:14:52 | -2292 |
| Cedarville | 04:00:26 | -4.9 | CT | Down | 29.5 | 232.8 | Low | 03:45:57 - 04:14:54 | -2352 |
| Fall River/Burney | 04:00:22 | -4.5 | CT | Down | 30.5 | 231.8 | Up | 03:45:53 - 04:14:50 | -2375 |
| Susanville | 04:00:27 | -5.3 | CT | Down | 30.5 | 232.8 | Up | 03:45:58 - 04:14:55 | -2443 |
| Greenville | 04:00:26 | -5.3 | CT | Down | 30.8 | 232.7 | Up | 03:45:58 - 04:14:55 | -2463 |
| Gimple | 04:00:26 | -5.3 | CT | Down | 30.8 | 232.8 | Up | 03:45:58 - 04:14:55 | -2465 |
| Quincy | 04:00:26 | -5.4 | CT | Down | 30.9 | 232.8 | Up | 03:45:58 - 04:14:55 | -2481 |
| Portola | 04:00:29 | -5.8 | CT | Down | 30.7 | 233.3 | Up | 03:46:01 - 04:14:58 | -2500 |
| Reno | 04:00:33 | -6.4 | NT | Down | 30.5 | 234.0 | Up | 03:46:04 - 04:15:01 | -2535 |
| Carson City | 04:00:34 | -6.6 | NT | Down | 30.7 | 234.2 | Up | 03:46:05 - 04:15:02 | -2568 |
| Gardnerville | 04:00:33 | -6.8 | NT | Down | 30.8 | 234.4 | Up | 03:46:05 - 04:15:02 | -2591 |
| Yerington | 04:00:37 | -7.1 | NT | Down | 30.4 | 234.9 | Up | 03:46:09 - 04:15:06 | -2597 |
| Hawthorne | 04:00:41 | -7.7 | NT | Down | 30.3 | 235.6 | Up | 03:46:13 - 04:15:10 | -2648 |
| Lee Vining | 04:00:40 | -7.8 | NT | Down | 30.9 | 235.5 | Up | 03:46:11 - 04:15:08 | -2691 |
| Dunrhomin | 04:01:12 | -14.3 | AT | Down | 20.3 | 246.0 | Low | 03:46:43 - 04:15:40 | -2707 |
| Tonopah | 04:00:49 | -8.9 | NT | Down | 29.6 | 237.1 | Low | 03:46:20 - 04:15:17 | -2715 |
| Bishop | 04:00:44 | -8.6 | NT | Down | 30.8 | 236.4 | Up | 03:46:16 - 04:15:13 | -2759 |
| Beatty | 04:00:54 | -9.9 | NT | Down | 29.9 | 238.1 | Low | 03:46:25 - 04:15:22 | -2831 |
| Indian Springs | 04:00:59 | -10.8 | NT | Down | 29.3 | 239.1 | Low | 03:46:30 - 04:15:27 | -2880 |
| CPSLO | 04:00:38 | -8.4 | NT | Down | 33.4 | 235.5 | Up | 03:46:10 - 04:15:07 | -2913 |
| Henderson | 04:01:04 | -11.6 | NT | Down | 29.1 | 240.0 | Low | 03:46:35 - 04:15:32 | -2942 |
| Patrick | 04:01:10 | -12.7 | AT | Down | 28.6 | 241.2 | Low | 03:46:42 - 04:15:39 | -3021 |
| Laughlin/Bullhead City | 04:01:07 | -12.4 | AT | Down | 29.2 | 240.8 | Low | 03:46:39 - 04:15:36 | -3033 |
| Kingman/Dolan Springs | 04:01:10 | -12.8 | AT | Down | 28.8 | 241.2 | Low | 03:46:41 - 04:15:38 | -3039 |
| Mohave Valley | 04:01:08 | -12.6 | AT | Down | 29.3 | 240.9 | Low | 03:46:39 - 04:15:36 | -3059 |
| Wildwood | 04:00:50 | -10.5 | NT | Down | 32.7 | 237.9 | Up | 03:46:22 - 04:15:19 | -3065 |
| Lake Havasu City | 04:01:10 | -13.0 | AT | Down | 29.3 | 241.3 | Low | 03:46:42 - 04:15:39 | -3102 |
| Idyllwild | 04:01:01 | -12.0 | NT | Down | 31.5 | 239.7 | Up | 03:46:32 - 04:15:29 | -3133 |
| Parker | 04:01:11 | -13.3 | AT | Down | 29.5 | 241.5 | Low | 03:46:42 - 04:15:39 | -3136 |
| Blythe | 04:01:11 | -13.4 | AT | Down | 30.0 | 241.5 | Low | 03:46:42 - 04:15:39 | -3182 |
| Calipatria | 04:01:07 | -13.1 | AT | Down | 30.9 | 241.0 | Up | 03:46:38 - 04:15:35 | -3213 |
| George/Scottsdale | 04:01:12 | -15.1 | AT | Down | 27.9 | 243.6 | Low | 03:46:43 - 04:15:40 | -3221 |
| Yuma | 04:01:12 | -14.0 | AT | Down | 30.4 | 242.0 | Up | 03:46:43 - 04:15:40 | -3271 |
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 531017, (2021/06/10 03:55UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 16.05 73 Alphard 09:27:35.2 -08:39:30 2.0 13.58 73 25 Sex 10:23:26.4 -04:04:27 6.0 1.19 83 PPM 193270 10:17:31.7 -03:32:02 8.5 0.46 82 PPM 193294 10:18:36.7 -03:49:23 9.4 0.06 82 531017 10:18:44.6 -03:52:29 15.8 82 Positions are for J2000
Event circumstances last updated at 2021/01/22 20:53:19 UT
Marc W. Buie, Southwest Research Institute