Event between (174567) Varda and star GA0860:06246585 with event index number of 2166833
Geocentric closest approach at 2023/03/11 09:42:33 UTC
J2000 position of star is 17:48:28.6 -02:09:35
Equinox of date position of star is 17:49:36.7 -02:09:56
Stellar brightness G=16.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 55 degrees from the moon.
Moon is 86% illuminated.
TNO apparent brightness V=20.2
[RECON map]
TNO is 46.1 AU from the Sun
and 46.2 AU from the Earth.
The TNO is moving 13.7
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 187 seconds.
The 1-sigma cross-track error in the shadow position is
3207 km.
The sky-plane scale is
33493.8 km/arcsec.
The TNO has an absolute magnitude Hv=3.4
Diameter=1259.0 km assuming a 5% albedo -- 91.6 sec chord
Diameter=514.0 km assuming a 30% albedo -- 37.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 174567, (2023/03/11 09:44UT) Object RA Dec mag sep mel Antares 16:30:50.0 -26:28:53 0.9 30.81 35 60Bet Oph 17:44:37.1 +04:33:33 2.8 6.84 56 PPM 180184 17:53:11.4 -01:14:27 6.3 1.27 56 PPM 180167 17:49:49.4 -02:12:09 8.1 0.05 55 174567 17:49:41.0 -02:09:58 16.4 55 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
4.8 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) |
| Klamath Falls | 09:43:15 | -47.0 | Dark | Up | 10.1 | 102.3 | Really Low | 09:28:15 - 09:58:15 | 5008 |
| Fall River/Burney | 09:43:06 | -47.8 | Dark | Up | 10.6 | 102.3 | Really Low | 09:28:06 - 09:58:06 | 5008 |
| Chiloquin | 09:43:17 | -46.7 | Dark | Up | 10.0 | 102.3 | Really Low | 09:28:17 - 09:58:17 | 5006 |
| Quincy | 09:42:58 | -48.6 | Dark | Up | 11.1 | 102.4 | Really Low | 09:27:58 - 09:57:58 | 5004 |
| Greenville | 09:43:00 | -48.4 | Dark | Up | 11.1 | 102.5 | Really Low | 09:28:00 - 09:58:00 | 5004 |
| Gimple | 09:42:59 | -48.4 | Dark | Up | 11.2 | 102.5 | Really Low | 09:27:59 - 09:57:59 | 5002 |
| Susanville | 09:43:01 | -48.1 | Dark | Up | 11.3 | 102.7 | Really Low | 09:28:01 - 09:58:01 | 4999 |
| Portola | 09:42:59 | -48.5 | Dark | Up | 11.5 | 102.7 | Really Low | 09:27:59 - 09:57:59 | 4997 |
| La Pine/Gilchrist | 09:43:25 | -45.6 | Dark | Up | 10.0 | 102.8 | Really Low | 09:28:25 - 09:58:25 | 4992 |
| CPSLO | 09:42:20 | -52.2 | Dark | Up | 12.2 | 101.6 | Really Low | 09:27:20 - 09:57:20 | 4989 |
| Oregon Observatory | 09:43:29 | -45.4 | Dark | Up | 10.0 | 102.9 | Really Low | 09:28:29 - 09:58:29 | 4989 |
| Sisters | 09:43:30 | -45.1 | Dark | Up | 9.8 | 102.8 | Really Low | 09:28:30 - 09:58:30 | 4986 |
| North Lake | 09:43:25 | -45.8 | Dark | Up | 10.5 | 103.1 | Really Low | 09:28:25 - 09:58:25 | 4986 |
| Cedarville | 09:43:12 | -46.9 | Dark | Up | 11.4 | 103.3 | Really Low | 09:28:12 - 09:58:12 | 4986 |
| Reno | 09:42:57 | -48.4 | Dark | Up | 12.1 | 103.1 | Really Low | 09:27:57 - 09:57:57 | 4985 |
| Carson City | 09:42:52 | -48.7 | Dark | Up | 12.1 | 103.0 | Really Low | 09:27:52 - 09:57:52 | 4985 |
| Lakeview | 09:43:20 | -46.4 | Dark | Up | 11.1 | 103.3 | Really Low | 09:28:20 - 09:58:20 | 4985 |
| Gardnerville | 09:42:52 | -48.9 | Dark | Up | 12.2 | 103.0 | Really Low | 09:27:52 - 09:57:52 | 4985 |
| Bend | 09:43:29 | -45.2 | Dark | Up | 10.1 | 103.0 | Really Low | 09:28:29 - 09:58:29 | 4985 |
| Paisley | 09:43:22 | -46.1 | Dark | Up | 10.9 | 103.3 | Really Low | 09:28:22 - 09:58:22 | 4984 |
| Redmond | 09:43:32 | -45.0 | Dark | Up | 10.1 | 103.1 | Really Low | 09:28:32 - 09:58:32 | 4980 |
| Yerington | 09:42:53 | -48.5 | Dark | Up | 12.7 | 103.4 | Really Low | 09:27:53 - 09:57:53 | 4973 |
| Lee Vining | 09:42:44 | -49.3 | Dark | Up | 12.9 | 103.2 | Really Low | 09:27:44 - 09:57:44 | 4972 |
| Maupin | 09:43:41 | -44.2 | Dark | Up | 10.0 | 103.4 | Really Low | 09:28:41 - 09:58:41 | 4968 |
| The Dalles | 09:43:41 | -43.9 | Dark | Up | 9.8 | 103.4 | Really Low | 09:28:41 - 09:58:41 | 4964 |
| Hawthorne | 09:42:50 | -48.7 | Dark | Up | 13.2 | 103.6 | Really Low | 09:27:50 - 09:57:50 | 4963 |
| Goldendale | 09:43:44 | -43.5 | Dark | Up | 10.0 | 103.7 | Really Low | 09:28:44 - 09:58:44 | 4956 |
| Bishop | 09:42:40 | -49.5 | Dark | Up | 13.6 | 103.5 | Really Low | 09:27:40 - 09:57:40 | 4956 |
| Victoria | 09:44:02 | -42.0 | Dark | Up | 7.8 | 102.2 | Really Low | 09:29:02 - 09:59:02 | 4948 |
| Toppenish/White Swan | 09:43:48 | -42.9 | Dark | Up | 10.2 | 104.1 | Really Low | 09:28:48 - 09:58:48 | 4941 |
| Yakima | 09:43:50 | -42.8 | Dark | Up | 10.0 | 104.0 | Really Low | 09:28:50 - 09:58:50 | 4941 |
| Wildwood | 09:42:15 | -52.1 | Dark | Up | 14.1 | 102.5 | Really Low | 09:27:15 - 09:57:15 | 4939 |
| Ellensburg | 09:43:55 | -42.4 | Dark | Up | 10.0 | 104.1 | Really Low | 09:28:55 - 09:58:55 | 4934 |
| Tonopah | 09:42:46 | -48.3 | Dark | Up | 14.4 | 104.5 | Really Low | 09:27:46 - 09:57:46 | 4934 |
| Wenatchee | 09:43:58 | -42.0 | Dark | Up | 10.0 | 104.4 | Really Low | 09:28:58 - 09:58:58 | 4925 |
| Pasco | 09:43:50 | -42.5 | Dark | Up | 11.1 | 105.1 | Really Low | 09:28:50 - 09:58:50 | 4921 |
| PNWRO | 09:43:51 | -42.6 | Dark | Up | 11.3 | 105.2 | Really Low | 09:28:51 - 09:58:51 | 4921 |
| Beatty | 09:42:38 | -48.9 | Dark | Up | 15.0 | 104.4 | Really Low | 09:27:38 - 09:57:38 | 4919 |
| Manson/Chelan | 09:44:00 | -41.5 | Dark | Up | 10.0 | 104.6 | Really Low | 09:29:00 - 09:59:00 | 4914 |
| Brewster | 09:44:03 | -41.2 | Dark | Up | 10.2 | 104.9 | Really Low | 09:29:03 - 09:59:03 | 4904 |
| Okanogan | 09:44:04 | -40.9 | Dark | Up | 10.3 | 105.2 | Really Low | 09:29:04 - 09:59:04 | 4896 |
| Idyllwild | 09:42:15 | -51.3 | Dark | Up | 15.7 | 103.6 | Really Low | 09:27:15 - 09:57:15 | 4895 |
| Indian Springs | 09:42:39 | -48.6 | Dark | Up | 15.9 | 105.1 | Really Low | 09:27:39 - 09:57:39 | 4892 |
| Tonasket | 09:44:08 | -40.6 | Dark | Up | 10.3 | 105.3 | Really Low | 09:29:08 - 09:59:08 | 4888 |
| Anarchist Mountain Observatory | 09:44:11 | -40.3 | Dark | Up | 10.3 | 105.5 | Really Low | 09:29:11 - 09:59:11 | 4882 |
| Oliver | 09:44:13 | -40.2 | Dark | Up | 10.1 | 105.3 | Really Low | 09:29:13 - 09:59:13 | 4881 |
| Summerland | 09:44:16 | -39.9 | Dark | Up | 9.9 | 105.3 | Really Low | 09:29:16 - 09:59:16 | 4874 |
| Penticton | 09:44:16 | -39.9 | Dark | Up | 10.0 | 105.4 | Really Low | 09:29:16 - 09:59:16 | 4874 |
| Peachland | 09:44:18 | -39.8 | Dark | Up | 9.8 | 105.3 | Really Low | 09:29:18 - 09:59:18 | 4873 |
| Henderson | 09:42:36 | -48.6 | Dark | Up | 16.6 | 105.4 | Really Low | 09:27:36 - 09:57:36 | 4872 |
| Kelowna | 09:44:17 | -39.6 | Dark | Up | 10.0 | 105.5 | Really Low | 09:29:17 - 09:59:17 | 4866 |
| Calipatria | 09:42:15 | -51.0 | Dark | Up | 16.8 | 104.1 | Really Low | 09:27:15 - 09:57:15 | 4858 |
| Clarence Fulton | 09:44:21 | -39.2 | Dark | Up | 10.0 | 105.8 | Really Low | 09:29:21 - 09:59:21 | 4855 |
| Laughlin/Bullhead City | 09:42:31 | -49.0 | Dark | Up | 17.1 | 105.4 | Really Low | 09:27:31 - 09:57:31 | 4855 |
| Mohave Valley | 09:42:31 | -49.1 | Dark | Up | 17.2 | 105.3 | Really Low | 09:27:31 - 09:57:31 | 4852 |
| Lake Havasu City | 09:42:24 | -49.3 | Dark | Up | 17.5 | 105.3 | Really Low | 09:27:24 - 09:57:24 | 4843 |
| Kingman/Dolan Springs | 09:42:34 | -48.6 | Dark | Up | 17.5 | 105.7 | Really Low | 09:27:34 - 09:57:34 | 4842 |
| Blythe | 09:42:18 | -50.1 | Dark | Up | 17.4 | 104.9 | Really Low | 09:27:18 - 09:57:18 | 4840 |
| Patrick | 09:42:36 | -48.4 | Dark | Up | 17.6 | 105.9 | Really Low | 09:27:36 - 09:57:36 | 4839 |
| Parker | 09:42:24 | -49.5 | Dark | Up | 17.6 | 105.2 | Really Low | 09:27:24 - 09:57:24 | 4838 |
| Yuma | 09:42:10 | -50.7 | Dark | Up | 17.6 | 104.5 | Really Low | 09:27:10 - 09:57:10 | 4830 |
| George/Scottsdale | 09:42:27 | -48.2 | Dark | Up | 19.6 | 106.6 | Really Low | 09:27:27 - 09:57:27 | 4766 |
| Dunrhomin | 09:43:29 | -39.8 | Dark | Up | 22.6 | 113.9 | Low | 09:28:29 - 09:58:29 | 4599 |
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 174567, (2023/03/11 09:44UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 30.81 35 60Bet Oph 17:43:28.3 +04:34:06 2.8 6.84 56 PPM 180184 17:51:59.5 -01:14:12 6.3 1.27 56 PPM 180167 17:48:36.9 -02:11:47 8.1 0.05 55 174567 17:48:28.6 -02:09:35 16.4 55 Positions are for J2000
Event circumstances last updated at 2021/10/16 01:18:57 UT
Marc W. Buie, Southwest Research Institute