Event between (42355) Typhon and star GA0680:06201420 with event index number of 2412699
Geocentric closest approach at 2023/01/18 12:51:55 UTC
J2000 position of star is 15:17:59.1 -20:21:15
Equinox of date position of star is 15:19:17.7 -20:26:10
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 19 degrees from the moon.
Moon is 16% illuminated.
TNO apparent brightness V=21.7
[RECON map]
TNO is 24.5 AU from the Sun
and 24.9 AU from the Earth.
The TNO is moving 18.9
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 60 seconds.
The 1-sigma cross-track error in the shadow position is
935 km.
The sky-plane scale is
18066.8 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 9.4 sec chord
Diameter=74.0 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
Star training set for 42355, (2023/01/18 12:52UT) Object RA Dec mag sep mel Antares 16:30:49.5 -26:28:52 0.9 17.46 3 7Del Sco 16:01:42.0 -22:41:08 2.3 10.11 9 PPM 264038 15:17:43.5 -22:28:59 5.5 2.08 19 PPM 264063 15:19:10.7 -20:48:20 8.2 0.37 19 PPM 264065 15:19:12.6 -20:28:44 9.7 0.05 19 42355 15:19:18.7 -20:26:14 14.7 19 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 12.8 km
RECON observability=0.4 and success probability=25.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 12:48:51 | -19.9 | Dark | Up | 14.2 | 155.4 | Really Low | 12:43:21 - 12:54:20 | 476 |
| Kamloops | 12:48:09 | -28.9 | Dark | Down | 10.7 | 142.0 | Really Low | 12:42:40 - 12:53:39 | -48 |
| Kelowna | 12:48:10 | -28.3 | Dark | Down | 11.7 | 142.7 | Really Low | 12:42:40 - 12:53:39 | -67 |
| Peachland | 12:48:09 | -28.5 | Dark | Down | 11.6 | 142.4 | Really Low | 12:42:39 - 12:53:38 | -83 |
| Summerland | 12:48:09 | -28.5 | Dark | Down | 11.8 | 142.5 | Really Low | 12:42:39 - 12:53:38 | -89 |
| Penticton | 12:48:09 | -28.4 | Dark | Down | 11.9 | 142.6 | Really Low | 12:42:39 - 12:53:38 | -89 |
| Oliver | 12:48:08 | -28.4 | Dark | Down | 12.2 | 142.5 | Really Low | 12:42:38 - 12:53:37 | -111 |
| Anarchist Mountain Observatory | 12:48:08 | -28.3 | Dark | Down | 12.4 | 142.7 | Really Low | 12:42:39 - 12:53:38 | -114 |
| Tonasket | 12:48:07 | -28.3 | Dark | Down | 12.6 | 142.6 | Really Low | 12:42:38 - 12:53:37 | -136 |
| Dunrhomin | 12:48:42 | -17.2 | AT | Up | 25.1 | 154.2 | Low | 12:43:13 - 12:54:12 | -153 |
| Okanogan | 12:48:06 | -28.4 | Dark | Down | 12.8 | 142.4 | Really Low | 12:42:37 - 12:53:36 | -161 |
| CU-SBO | 12:48:41 | -17.2 | AT | Up | 25.3 | 154.1 | Low | 12:43:12 - 12:54:11 | -172 |
| Brewster | 12:48:05 | -28.6 | Dark | Down | 12.9 | 142.2 | Really Low | 12:42:36 - 12:53:35 | -185 |
| Manson/Chelan | 12:48:04 | -28.8 | Dark | Down | 12.9 | 141.8 | Really Low | 12:42:34 - 12:53:33 | -210 |
| Wenatchee | 12:48:03 | -29.0 | Dark | Down | 13.2 | 141.6 | Really Low | 12:42:33 - 12:53:32 | -246 |
| Ellensburg | 12:48:01 | -29.1 | Dark | Up | 13.5 | 141.4 | Really Low | 12:42:32 - 12:53:31 | -280 |
| Victoria | 12:47:57 | -31.0 | Dark | Down | 11.1 | 139.1 | Really Low | 12:42:28 - 12:53:27 | -282 |
| PNWRO | 12:48:04 | -28.0 | Dark | Up | 15.0 | 142.6 | Really Low | 12:42:35 - 12:53:34 | -285 |
| Yakima | 12:48:01 | -29.1 | Dark | Up | 13.8 | 141.3 | Really Low | 12:42:31 - 12:53:30 | -307 |
| Toppenish/White Swan | 12:48:01 | -29.0 | Dark | Up | 14.0 | 141.4 | Really Low | 12:42:31 - 12:53:30 | -315 |
| Goldendale | 12:47:58 | -29.3 | Dark | Up | 14.3 | 140.9 | Really Low | 12:42:29 - 12:53:28 | -366 |
| The Dalles | 12:47:57 | -29.6 | Dark | Up | 14.3 | 140.6 | Really Low | 12:42:28 - 12:53:27 | -394 |
| Maupin | 12:47:57 | -29.5 | Dark | Up | 14.6 | 140.6 | Really Low | 12:42:27 - 12:53:26 | -418 |
| Sisters | 12:47:54 | -29.9 | Dark | Up | 15.1 | 140.0 | Really Low | 12:42:24 - 12:53:23 | -495 |
| Bend | 12:47:54 | -29.7 | Dark | Up | 15.4 | 140.2 | Really Low | 12:42:25 - 12:53:24 | -501 |
| Oregon Observatory | 12:47:54 | -29.8 | Dark | Up | 15.5 | 140.1 | Really Low | 12:42:24 - 12:53:23 | -518 |
| North Lake | 12:47:54 | -29.4 | Dark | Up | 16.2 | 140.4 | Really Low | 12:42:25 - 12:53:24 | -541 |
| Lakeview | 12:47:54 | -28.9 | Dark | Up | 17.3 | 140.7 | Really Low | 12:42:25 - 12:53:24 | -594 |
| Chiloquin | 12:47:50 | -30.1 | Dark | Up | 16.3 | 139.5 | Really Low | 12:42:21 - 12:53:20 | -625 |
| Cedarville | 12:47:54 | -28.8 | Dark | Up | 17.9 | 140.7 | Really Low | 12:42:24 - 12:53:23 | -633 |
| Klamath Falls | 12:47:50 | -30.0 | Dark | Up | 16.6 | 139.5 | Really Low | 12:42:20 - 12:53:19 | -646 |
| Fall River/Burney | 12:47:49 | -29.7 | Dark | Up | 17.6 | 139.5 | Really Low | 12:42:20 - 12:53:19 | -715 |
| Susanville | 12:47:51 | -29.1 | Dark | Up | 18.5 | 140.0 | Really Low | 12:42:21 - 12:53:20 | -732 |
| Gimple | 12:47:50 | -29.2 | Dark | Up | 18.6 | 139.8 | Really Low | 12:42:20 - 12:53:19 | -760 |
| Reno | 12:47:52 | -28.4 | Dark | Up | 19.6 | 140.6 | Really Low | 12:42:23 - 12:53:22 | -762 |
| Greenville | 12:47:49 | -29.3 | Dark | Up | 18.6 | 139.7 | Really Low | 12:42:20 - 12:53:19 | -763 |
| Tonopah | 12:47:59 | -26.2 | Dark | Up | 22.0 | 142.5 | Low | 12:42:29 - 12:53:28 | -766 |
| Portola | 12:47:50 | -28.9 | Dark | Up | 19.0 | 140.1 | Really Low | 12:42:21 - 12:53:20 | -768 |
| Yerington | 12:47:53 | -27.8 | Dark | Up | 20.3 | 141.0 | Low | 12:42:24 - 12:53:23 | -776 |
| Quincy | 12:47:49 | -29.3 | Dark | Up | 18.7 | 139.7 | Really Low | 12:42:19 - 12:53:18 | -778 |
| Carson City | 12:47:52 | -28.3 | Dark | Up | 19.9 | 140.5 | Really Low | 12:42:22 - 12:53:21 | -787 |
| Hawthorne | 12:47:54 | -27.4 | Dark | Up | 21.0 | 141.3 | Low | 12:42:25 - 12:53:24 | -789 |
| Gardnerville | 12:47:51 | -28.3 | Dark | Up | 20.1 | 140.5 | Low | 12:42:22 - 12:53:21 | -803 |
| Indian Springs | 12:48:02 | -24.8 | Dark | Up | 23.9 | 143.4 | Low | 12:42:33 - 12:53:32 | -814 |
| Henderson | 12:48:04 | -24.2 | Dark | Up | 24.7 | 143.9 | Low | 12:42:35 - 12:53:34 | -825 |
| Patrick | 12:48:07 | -23.1 | Dark | Up | 25.8 | 144.8 | Low | 12:42:38 - 12:53:37 | -826 |
| Beatty | 12:47:59 | -25.7 | Dark | Up | 23.2 | 142.6 | Low | 12:42:29 - 12:53:28 | -833 |
| Kingman/Dolan Springs | 12:48:07 | -23.3 | Dark | Up | 25.8 | 144.5 | Low | 12:42:37 - 12:53:36 | -850 |
| Lee Vining | 12:47:52 | -27.7 | Dark | Up | 21.1 | 140.8 | Low | 12:42:23 - 12:53:22 | -850 |
| Bishop | 12:47:54 | -27.1 | Dark | Up | 22.0 | 141.3 | Low | 12:42:25 - 12:53:24 | -865 |
| George/Scottsdale | 12:48:14 | -21.2 | Dark | Up | 28.1 | 146.1 | Low | 12:42:44 - 12:53:43 | -869 |
| Laughlin/Bullhead City | 12:48:05 | -23.7 | Dark | Up | 25.6 | 144.1 | Low | 12:42:36 - 12:53:35 | -873 |
| Mohave Valley | 12:48:05 | -23.6 | Dark | Up | 25.8 | 144.0 | Low | 12:42:36 - 12:53:35 | -894 |
| Lake Havasu City | 12:48:06 | -23.4 | Dark | Up | 26.3 | 144.1 | Low | 12:42:36 - 12:53:35 | -913 |
| Parker | 12:48:05 | -23.3 | Dark | Up | 26.6 | 144.0 | Low | 12:42:36 - 12:53:35 | -939 |
| Yuma | 12:48:03 | -23.3 | Dark | Up | 27.6 | 143.3 | Low | 12:42:34 - 12:53:33 | -1064 |
| Calipatria | 12:48:00 | -24.1 | Dark | Up | 26.8 | 142.6 | Low | 12:42:31 - 12:53:30 | -1069 |
| Idyllwild | 12:47:57 | -25.2 | Dark | Up | 25.7 | 141.7 | Low | 12:42:27 - 12:53:26 | -1071 |
| Wildwood | 12:47:50 | -26.9 | Dark | Up | 24.4 | 140.2 | Low | 12:42:21 - 12:53:20 | -1123 |
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 42355, (2023/01/18 12:52UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 17.46 3 7Del Sco 16:00:20.0 -22:37:19 2.3 10.11 9 PPM 264038 15:16:23.0 -22:23:58 5.5 2.08 19 PPM 264063 15:17:51.0 -20:43:20 8.2 0.37 19 PPM 264065 15:17:53.0 -20:23:45 9.7 0.05 19 42355 15:17:59.1 -20:21:15 14.7 19 Positions are for J2000
Event circumstances last updated at 2022/10/02 04:13:18 UT
Marc W. Buie, Southwest Research Institute