Event between (491767) 12VU113 and star GA0980:00281937 with event index number of 2318139
Geocentric closest approach at 2021/11/03 07:26:27 UTC
J2000 position of star is 03:17:16.4 +08:10:43
Equinox of date position of star is 03:18:26.5 +08:15:26
Stellar brightness G=14.2,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 150 degrees from the moon.
Moon is 4% illuminated.
TNO apparent brightness V=23.4
[RECON map]
TNO is 36.7 AU from the Sun
and 35.8 AU from the Earth.
The TNO is moving 25.4
km/sec on the sky relative to the star, or,
3.5 arcsec/hr.
The 1-sigma error in the time of the event is 194 seconds.
The 1-sigma cross-track error in the shadow position is
4801 km.
The sky-plane scale is
25933.7 km/arcsec.
The TNO has an absolute magnitude Hv=7.8
Diameter=173.8 km assuming a 5% albedo -- 6.6 sec chord
Diameter=70.9 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
Star training set for 491767, (2021/11/03 07:26UT) Object RA Dec mag sep mel Aldebaran 04:37:10.6 +16:33:05 0.8 20.91 130 Menkar 03:03:25.4 +04:10:27 2.5 5.53 154 PPM 146333 03:13:36.1 +06:44:30 5.6 1.93 151 PPM 146460 03:21:06.6 +08:46:39 7.5 0.84 149 PPM 146453 03:20:50.8 +08:05:43 10.0 0.62 149 PPM 146396 03:17:46.7 +08:16:12 11.2 0.17 150 491767 03:18:26.7 +08:15:27 14.2 149 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
4.6 sigma about the mid-time.
The median site spacing is 21.5 km
RECON observability=1.0 and success probability=9.4%
| 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 | 07:26:34 | -54.8 | Dark | Down | 46.3 | 159.4 | Up | 07:11:34 - 07:41:34 | -263 |
| Kelowna | 07:26:35 | -55.2 | Dark | Down | 46.6 | 159.1 | Up | 07:11:35 - 07:41:35 | -291 |
| Peachland | 07:26:35 | -55.3 | Dark | Down | 46.7 | 158.6 | Up | 07:11:35 - 07:41:35 | -295 |
| Summerland | 07:26:35 | -55.4 | Dark | Down | 46.8 | 158.7 | Up | 07:11:35 - 07:41:35 | -308 |
| Penticton | 07:26:35 | -55.5 | Dark | Down | 46.9 | 158.8 | Up | 07:11:35 - 07:41:35 | -315 |
| Victoria | 07:26:47 | -56.1 | Dark | Down | 46.8 | 153.1 | Up | 07:11:47 - 07:41:47 | -331 |
| Oliver | 07:26:36 | -55.8 | Dark | Down | 47.2 | 158.7 | Up | 07:11:36 - 07:41:36 | -342 |
| Anarchist Mountain Observatory | 07:26:36 | -56.0 | Dark | Down | 47.4 | 158.9 | Up | 07:11:36 - 07:41:36 | -358 |
| Tonasket | 07:26:36 | -56.3 | Dark | Down | 47.7 | 158.7 | Up | 07:11:36 - 07:41:36 | -382 |
| Okanogan | 07:26:37 | -56.6 | Dark | Down | 48.0 | 158.3 | Up | 07:11:37 - 07:41:37 | -406 |
| Brewster | 07:26:38 | -56.9 | Dark | Down | 48.2 | 157.9 | Up | 07:11:38 - 07:41:38 | -424 |
| Manson/Chelan | 07:26:39 | -57.1 | Dark | Down | 48.3 | 157.3 | Up | 07:11:39 - 07:41:39 | -434 |
| Wenatchee | 07:26:41 | -57.5 | Dark | Down | 48.7 | 156.9 | Up | 07:11:41 - 07:41:41 | -470 |
| Ellensburg | 07:26:42 | -57.9 | Dark | Down | 49.0 | 156.4 | Up | 07:11:42 - 07:41:42 | -499 |
| Yakima | 07:26:42 | -58.3 | Dark | Down | 49.4 | 156.1 | Up | 07:11:42 - 07:41:42 | -532 |
| Toppenish/White Swan | 07:26:42 | -58.5 | Dark | Down | 49.6 | 156.3 | Up | 07:11:42 - 07:41:42 | -552 |
| Pasco | 07:26:39 | -58.8 | Dark | Down | 50.1 | 158.1 | Up | 07:11:39 - 07:41:39 | -584 |
| Goldendale | 07:26:44 | -59.0 | Dark | Down | 50.0 | 155.4 | Up | 07:11:44 - 07:41:44 | -590 |
| The Dalles | 07:26:46 | -59.2 | Dark | Down | 50.1 | 154.8 | Up | 07:11:46 - 07:41:46 | -602 |
| PNWRO | 07:26:38 | -59.0 | Dark | Down | 50.4 | 158.3 | Up | 07:11:38 - 07:41:38 | -608 |
| Maupin | 07:26:46 | -59.6 | Dark | Down | 50.5 | 154.7 | Up | 07:11:46 - 07:41:46 | -638 |
| Sisters | 07:26:49 | -60.5 | Dark | Down | 51.2 | 153.5 | Up | 07:11:49 - 07:41:49 | -702 |
| Redmond | 07:26:47 | -60.5 | Dark | Down | 51.3 | 154.1 | Up | 07:11:47 - 07:41:47 | -712 |
| Bend | 07:26:48 | -60.7 | Dark | Down | 51.5 | 153.8 | Up | 07:11:48 - 07:41:48 | -727 |
| Oregon Observatory | 07:26:49 | -60.9 | Dark | Down | 51.6 | 153.5 | Up | 07:11:49 - 07:41:49 | -739 |
| La Pine/Gilchrist | 07:26:49 | -61.1 | Dark | Down | 51.7 | 153.3 | Up | 07:11:49 - 07:41:49 | -755 |
| North Lake | 07:26:48 | -61.6 | Dark | Down | 52.3 | 153.9 | Up | 07:11:48 - 07:41:48 | -803 |
| Chiloquin | 07:26:52 | -62.1 | Dark | Down | 52.6 | 152.1 | Up | 07:11:52 - 07:41:52 | -843 |
| Paisley | 07:26:48 | -62.2 | Dark | Down | 52.9 | 154.2 | Up | 07:11:48 - 07:41:48 | -856 |
| Klamath Falls | 07:26:52 | -62.4 | Dark | Down | 52.9 | 152.0 | Up | 07:11:52 - 07:41:52 | -874 |
| Lakeview | 07:26:48 | -62.7 | Dark | Down | 53.5 | 154.2 | Up | 07:11:48 - 07:41:48 | -903 |
| Cedarville | 07:26:49 | -63.4 | Dark | Down | 54.1 | 154.1 | Up | 07:11:49 - 07:41:49 | -964 |
| Fall River/Burney | 07:26:53 | -63.7 | Dark | Down | 54.1 | 151.9 | Up | 07:11:53 - 07:41:53 | -983 |
| Susanville | 07:26:51 | -64.4 | Dark | Down | 54.9 | 152.6 | Up | 07:11:51 - 07:41:51 | -1053 |
| Greenville | 07:26:53 | -64.6 | Dark | Down | 55.1 | 152.0 | Up | 07:11:53 - 07:41:53 | -1071 |
| Gimple | 07:26:53 | -64.6 | Dark | Down | 55.1 | 152.1 | Up | 07:11:53 - 07:41:53 | -1073 |
| Quincy | 07:26:53 | -64.8 | Dark | Down | 55.3 | 151.8 | Up | 07:11:53 - 07:41:53 | -1089 |
| Portola | 07:26:52 | -65.0 | Dark | Down | 55.5 | 152.5 | Up | 07:11:52 - 07:41:52 | -1109 |
| Reno | 07:26:50 | -65.4 | Dark | Down | 56.0 | 153.4 | Up | 07:11:50 - 07:41:50 | -1146 |
| Carson City | 07:26:51 | -65.7 | Dark | Down | 56.3 | 153.2 | Up | 07:11:51 - 07:41:51 | -1178 |
| Gardnerville | 07:26:51 | -66.0 | Dark | Down | 56.6 | 153.1 | Up | 07:11:51 - 07:41:51 | -1201 |
| Yerington | 07:26:49 | -66.0 | Dark | Down | 56.7 | 154.1 | Up | 07:11:49 - 07:41:49 | -1208 |
| Hawthorne | 07:26:48 | -66.5 | Dark | Down | 57.3 | 154.7 | Up | 07:11:48 - 07:41:48 | -1260 |
| Lee Vining | 07:26:50 | -67.0 | Dark | Down | 57.7 | 153.5 | Up | 07:11:50 - 07:41:50 | -1301 |
| Tonopah | 07:26:44 | -67.1 | Dark | Down | 58.2 | 156.9 | Up | 07:11:44 - 07:41:44 | -1329 |
| Dunrhomin | 07:26:02 | -63.3 | Dark | Down | 57.9 | 179.6 | Up | 07:11:02 - 07:41:02 | -1340 |
| Bishop | 07:26:49 | -67.7 | Dark | Down | 58.4 | 154.3 | Up | 07:11:49 - 07:41:49 | -1371 |
| Beatty | 07:26:44 | -68.2 | Dark | Down | 59.4 | 157.0 | Up | 07:11:44 - 07:41:44 | -1445 |
| Indian Springs | 07:26:40 | -68.6 | Dark | Down | 60.0 | 158.7 | Up | 07:11:40 - 07:41:40 | -1496 |
| CPSLO | 07:26:59 | -69.4 | Dark | Down | 59.4 | 148.8 | Up | 07:11:59 - 07:41:59 | -1517 |
| Henderson | 07:26:39 | -69.1 | Dark | Down | 60.7 | 159.7 | Up | 07:11:39 - 07:41:39 | -1559 |
| Patrick | 07:26:36 | -69.7 | Dark | Down | 61.6 | 161.5 | Up | 07:11:36 - 07:41:36 | -1640 |
| Laughlin/Bullhead City | 07:26:38 | -70.0 | Dark | Down | 61.7 | 160.0 | Up | 07:11:38 - 07:41:38 | -1650 |
| Kingman/Dolan Springs | 07:26:37 | -69.9 | Dark | Down | 61.8 | 161.0 | Up | 07:11:37 - 07:41:37 | -1657 |
| Wildwood | 07:26:53 | -70.9 | Dark | Down | 61.3 | 151.4 | Up | 07:11:53 - 07:41:53 | -1673 |
| Mohave Valley | 07:26:39 | -70.2 | Dark | Down | 61.9 | 159.8 | Up | 07:11:39 - 07:41:39 | -1676 |
| Lake Havasu City | 07:26:38 | -70.6 | Dark | Down | 62.4 | 160.1 | Up | 07:11:38 - 07:41:38 | -1719 |
| Idyllwild | 07:26:48 | -71.4 | Dark | Down | 62.3 | 154.8 | Up | 07:11:48 - 07:41:48 | -1744 |
| Parker | 07:26:39 | -71.0 | Dark | Down | 62.7 | 159.9 | Up | 07:11:39 - 07:41:39 | -1753 |
| Blythe | 07:26:40 | -71.5 | Dark | Down | 63.1 | 158.9 | Up | 07:11:40 - 07:41:40 | -1798 |
| Calipatria | 07:26:44 | -72.0 | Dark | Down | 63.3 | 156.6 | Up | 07:11:44 - 07:41:44 | -1827 |
| George/Scottsdale | 07:26:31 | -71.1 | Dark | Down | 63.7 | 164.8 | Up | 07:11:31 - 07:41:31 | -1841 |
| Yuma | 07:26:42 | -72.4 | Dark | Down | 64.0 | 158.2 | Up | 07:11:42 - 07:41:42 | -1887 |
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 491767, (2021/11/03 07:26UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 20.91 130 Menkar 03:02:16.8 +04:05:21 2.5 5.53 154 PPM 146333 03:12:26.3 +06:39:39 5.6 1.93 151 PPM 146460 03:19:56.0 +08:41:58 7.5 0.84 149 PPM 146453 03:19:40.5 +08:01:02 10.0 0.62 149 PPM 146396 03:16:36.3 +08:11:27 11.2 0.17 150 491767 03:17:16.4 +08:10:43 14.2 150 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:42:09 UT
Marc W. Buie, Southwest Research Institute