Event between 02GH166 and star GA0640:06966372 with event index number of 1230903
Geocentric closest approach at 2023/05/27 05:41:04 UTC
J2000 position of star is 15:32:30.2 -25:50:24
Equinox of date position of star is 15:33:51.9 -25:54:56
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 86 degrees from the moon.
Moon is 46% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 31.6 AU from the Sun
and 30.6 AU from the Earth.
The TNO is moving 23.4
km/sec on the sky relative to the star, or,
3.8 arcsec/hr.
The 1-sigma error in the time of the event is 126 seconds.
The 1-sigma cross-track error in the shadow position is
1645 km.
The sky-plane scale is
22221.5 km/arcsec.
The TNO has an absolute magnitude Hv=7.2
Diameter=216.8 km assuming a 5% albedo -- 9.3 sec chord
Diameter=88.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E
Star training set for 02GH166, (2023/05/27 05:39UT) Object RA Dec mag sep mel Antares 16:30:50.8 -26:28:55 0.9 12.78 99 7Del Sco 16:01:43.3 -22:41:11 2.3 7.11 91 PPM 264463 15:38:53.1 -26:21:20 6.4 1.20 88 PPM 264382 15:34:31.7 -25:52:43 7.3 0.15 86 02GH166 15:33:54.3 -25:55:04 16.9 87 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 6.6 km
RECON observability=0.5 and success probability=1.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 05:42:31 | -14.7 | AT | Up | 11.7 | 171.8 | Really Low | 05:31:29 - 05:53:33 | 5617 |
| Kamloops | 05:43:10 | -12.1 | AT | Up | 10.8 | 158.9 | Really Low | 05:32:08 - 05:54:12 | 5233 |
| Kelowna | 05:43:08 | -13.1 | AT | Up | 11.8 | 159.6 | Really Low | 05:32:06 - 05:54:10 | 5228 |
| Peachland | 05:43:09 | -13.1 | AT | Up | 11.8 | 159.3 | Really Low | 05:32:07 - 05:54:11 | 5216 |
| Penticton | 05:43:09 | -13.4 | AT | Up | 12.0 | 159.5 | Really Low | 05:32:07 - 05:54:11 | 5213 |
| Summerland | 05:43:09 | -13.3 | AT | Up | 12.0 | 159.4 | Really Low | 05:32:07 - 05:54:11 | 5213 |
| Dunrhomin | 05:42:30 | -26.0 | Dark | Up | 23.5 | 172.0 | Low | 05:31:28 - 05:53:32 | 5204 |
| Oliver | 05:43:09 | -13.7 | AT | Up | 12.4 | 159.5 | Really Low | 05:32:07 - 05:54:11 | 5200 |
| Anarchist Mountain Observatory | 05:43:09 | -13.9 | AT | Up | 12.6 | 159.6 | Really Low | 05:32:07 - 05:54:11 | 5199 |
| CU-SBO | 05:42:30 | -26.2 | Dark | Up | 23.7 | 171.9 | Low | 05:31:28 - 05:53:32 | 5190 |
| Tonasket | 05:43:09 | -14.1 | AT | Up | 12.8 | 159.5 | Really Low | 05:32:07 - 05:54:11 | 5185 |
| Okanogan | 05:43:10 | -14.4 | AT | Up | 13.1 | 159.4 | Really Low | 05:32:08 - 05:54:12 | 5167 |
| Brewster | 05:43:11 | -14.5 | AT | Up | 13.3 | 159.2 | Really Low | 05:32:09 - 05:54:13 | 5151 |
| Manson/Chelan | 05:43:12 | -14.6 | AT | Up | 13.4 | 158.8 | Really Low | 05:32:10 - 05:54:14 | 5132 |
| Wenatchee | 05:43:13 | -14.9 | AT | Up | 13.8 | 158.7 | Really Low | 05:32:11 - 05:54:15 | 5108 |
| PNWRO | 05:43:11 | -16.6 | AT | Up | 15.5 | 159.8 | Really Low | 05:32:09 - 05:54:13 | 5090 |
| Ellensburg | 05:43:14 | -15.2 | AT | Up | 14.2 | 158.4 | Really Low | 05:32:12 - 05:54:16 | 5085 |
| Yakima | 05:43:15 | -15.5 | AT | Up | 14.6 | 158.4 | Really Low | 05:32:13 - 05:54:17 | 5067 |
| Victoria | 05:43:20 | -12.8 | AT | Up | 12.0 | 156.0 | Really Low | 05:32:18 - 05:54:22 | 5065 |
| Toppenish/White Swan | 05:43:15 | -15.8 | AT | Up | 14.8 | 158.5 | Really Low | 05:32:13 - 05:54:17 | 5062 |
| Goldendale | 05:43:16 | -16.1 | AT | Up | 15.2 | 158.1 | Really Low | 05:32:14 - 05:54:18 | 5026 |
| The Dalles | 05:43:17 | -16.1 | AT | Up | 15.3 | 157.7 | Really Low | 05:32:15 - 05:54:19 | 5005 |
| Maupin | 05:43:17 | -16.5 | AT | Up | 15.7 | 157.8 | Really Low | 05:32:15 - 05:54:19 | 4989 |
| Sisters | 05:43:20 | -17.0 | AT | Up | 16.4 | 157.3 | Really Low | 05:32:18 - 05:54:22 | 4934 |
| Bend | 05:43:19 | -17.3 | AT | Up | 16.7 | 157.5 | Really Low | 05:32:17 - 05:54:21 | 4931 |
| Oregon Observatory | 05:43:20 | -17.4 | AT | Up | 16.8 | 157.3 | Really Low | 05:32:18 - 05:54:22 | 4919 |
| North Lake | 05:43:19 | -18.2 | Dark | Up | 17.6 | 157.7 | Really Low | 05:32:17 - 05:54:21 | 4905 |
| Lakeview | 05:43:18 | -19.3 | Dark | Up | 18.7 | 158.1 | Really Low | 05:32:16 - 05:54:20 | 4870 |
| Cedarville | 05:43:18 | -19.9 | Dark | Up | 19.4 | 158.2 | Really Low | 05:32:16 - 05:54:20 | 4843 |
| Chiloquin | 05:43:22 | -18.4 | Dark | Up | 17.9 | 156.8 | Really Low | 05:32:20 - 05:54:24 | 4842 |
| Klamath Falls | 05:43:22 | -18.7 | Dark | Up | 18.3 | 156.8 | Really Low | 05:32:20 - 05:54:24 | 4827 |
| Fall River/Burney | 05:43:22 | -19.8 | Dark | Up | 19.5 | 157.0 | Really Low | 05:32:20 - 05:54:24 | 4779 |
| Susanville | 05:43:20 | -20.6 | Dark | Up | 20.3 | 157.6 | Low | 05:32:18 - 05:54:22 | 4770 |
| Tonopah | 05:43:11 | -24.0 | Dark | Up | 23.4 | 160.4 | Low | 05:32:09 - 05:54:13 | 4754 |
| Reno | 05:43:18 | -21.7 | Dark | Up | 21.3 | 158.2 | Low | 05:32:16 - 05:54:20 | 4751 |
| Gimple | 05:43:21 | -20.8 | Dark | Up | 20.5 | 157.4 | Low | 05:32:19 - 05:54:23 | 4748 |
| Greenville | 05:43:21 | -20.7 | Dark | Up | 20.4 | 157.3 | Low | 05:32:19 - 05:54:23 | 4746 |
| Portola | 05:43:20 | -21.2 | Dark | Up | 20.9 | 157.7 | Low | 05:32:18 - 05:54:22 | 4744 |
| Yerington | 05:43:16 | -22.5 | Dark | Up | 22.0 | 158.7 | Low | 05:32:14 - 05:54:18 | 4742 |
| Quincy | 05:43:21 | -20.9 | Dark | Up | 20.6 | 157.3 | Low | 05:32:19 - 05:54:23 | 4735 |
| Hawthorne | 05:43:16 | -23.1 | Dark | Up | 22.6 | 159.2 | Low | 05:32:14 - 05:54:18 | 4734 |
| Carson City | 05:43:19 | -22.0 | Dark | Up | 21.6 | 158.2 | Low | 05:32:17 - 05:54:21 | 4732 |
| Gardnerville | 05:43:19 | -22.3 | Dark | Up | 21.9 | 158.2 | Low | 05:32:17 - 05:54:21 | 4721 |
| Indian Springs | 05:43:06 | -25.9 | Dark | Up | 25.2 | 161.6 | Low | 05:32:04 - 05:54:08 | 4720 |
| Henderson | 05:43:05 | -26.7 | Dark | Up | 25.9 | 162.2 | Low | 05:32:03 - 05:54:07 | 4711 |
| Patrick | 05:43:00 | -27.7 | Dark | Up | 26.7 | 163.2 | Low | 05:31:58 - 05:54:02 | 4710 |
| Beatty | 05:43:10 | -25.2 | Dark | Up | 24.6 | 160.6 | Low | 05:32:08 - 05:54:12 | 4704 |
| Kingman/Dolan Springs | 05:43:01 | -27.8 | Dark | Up | 26.9 | 162.9 | Low | 05:31:59 - 05:54:03 | 4691 |
| Lee Vining | 05:43:17 | -23.3 | Dark | Up | 23.0 | 158.6 | Low | 05:32:15 - 05:54:19 | 4688 |
| Bishop | 05:43:14 | -24.1 | Dark | Up | 23.7 | 159.2 | Low | 05:32:12 - 05:54:16 | 4677 |
| Laughlin/Bullhead City | 05:43:03 | -27.6 | Dark | Up | 26.8 | 162.4 | Low | 05:32:01 - 05:54:05 | 4673 |
| George/Scottsdale | 05:42:53 | -29.9 | Dark | Up | 28.8 | 164.9 | Low | 05:31:51 - 05:53:55 | 4673 |
| Mohave Valley | 05:43:03 | -27.8 | Dark | Up | 27.1 | 162.4 | Low | 05:32:01 - 05:54:05 | 4658 |
| Lake Havasu City | 05:43:02 | -28.3 | Dark | Up | 27.5 | 162.6 | Low | 05:32:00 - 05:54:04 | 4642 |
| Parker | 05:43:02 | -28.6 | Dark | Up | 27.9 | 162.6 | Low | 05:32:00 - 05:54:04 | 4622 |
| Yuma | 05:43:04 | -29.7 | Dark | Up | 29.2 | 162.0 | Low | 05:32:02 - 05:54:06 | 4523 |
| Calipatria | 05:43:06 | -29.0 | Dark | Up | 28.5 | 161.2 | Low | 05:32:04 - 05:54:08 | 4521 |
| Idyllwild | 05:43:11 | -27.9 | Dark | Up | 27.6 | 160.2 | Low | 05:32:09 - 05:54:13 | 4520 |
| Wildwood | 05:43:17 | -26.8 | Dark | Up | 26.7 | 158.5 | Low | 05:32:15 - 05:54:19 | 4478 |
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 02GH166, (2023/05/27 05:39UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.78 99 7Del Sco 16:00:20.0 -22:37:18 2.3 7.11 91 PPM 264463 15:37:28.5 -26:16:48 6.4 1.20 88 PPM 264382 15:33:07.5 -25:48:04 7.3 0.15 86 02GH166 15:32:30.2 -25:50:24 16.9 86 Positions are for J2000
Event circumstances last updated at 2022/09/26 02:30:04 UT
Marc W. Buie, Southwest Research Institute