Event between (136204) 03WL7 and star GA1100:03237434 with event index number of 1116916
Geocentric closest approach at 2022/01/31 09:33:24 UTC
J2000 position of star is 10:00:06.4 +20:27:56
Equinox of date position of star is 10:01:17.2 +20:21:46
Stellar brightness G=14.0,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 155 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.0
[RECON map]
TNO is 17.2 AU from the Sun
and 16.2 AU from the Earth.
The TNO is moving 21.9
km/sec on the sky relative to the star, or,
6.7 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
981 km.
The sky-plane scale is
11759.5 km/arcsec.
The TNO has an absolute magnitude Hv=8.7
Diameter=108.1 km assuming a 5% albedo -- 4.9 sec chord
Diameter=44.2 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
Star training set for 136204, (2022/01/31 09:34UT) Object RA Dec mag sep mel Regulus 10:09:32.8 +11:51:30 1.3 8.73 150 PPM 100044 10:04:02.6 +21:50:30 5.4 1.61 155 PPM 099985 09:58:56.2 +20:03:52 8.3 0.63 155 PPM 100002 10:00:25.3 +20:18:29 9.3 0.22 155 136204 10:01:19.8 +20:21:32 14.0 155 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 21.9 km
RECON observability=1.0 and success probability=40.3%
| 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 | 09:33:59 | -53.1 | Dark | Down | 60.0 | 188.9 | Up | 09:28:32 - 09:39:27 | 1075 |
| Kelowna | 09:33:59 | -53.5 | Dark | Down | 60.4 | 188.7 | Up | 09:28:32 - 09:39:27 | 1037 |
| Peachland | 09:34:00 | -53.7 | Dark | Down | 60.5 | 188.2 | Up | 09:28:32 - 09:39:27 | 1019 |
| Summerland | 09:33:59 | -53.8 | Dark | Down | 60.7 | 188.4 | Up | 09:28:32 - 09:39:27 | 1008 |
| Penticton | 09:33:59 | -53.8 | Dark | Down | 60.7 | 188.6 | Up | 09:28:31 - 09:39:26 | 1005 |
| Oliver | 09:33:58 | -54.1 | Dark | Down | 61.1 | 188.7 | Up | 09:28:30 - 09:39:25 | 974 |
| Anarchist Mountain Observatory | 09:33:57 | -54.1 | Dark | Down | 61.2 | 189.2 | Up | 09:28:29 - 09:39:24 | 964 |
| Tonasket | 09:33:56 | -54.4 | Dark | Down | 61.5 | 189.1 | Up | 09:28:29 - 09:39:24 | 934 |
| Okanogan | 09:33:57 | -54.7 | Dark | Down | 61.9 | 188.9 | Up | 09:28:29 - 09:39:24 | 899 |
| Brewster | 09:33:57 | -55.0 | Dark | Down | 62.2 | 188.6 | Up | 09:28:29 - 09:39:24 | 869 |
| Manson/Chelan | 09:33:58 | -55.3 | Dark | Down | 62.4 | 187.9 | Up | 09:28:30 - 09:39:25 | 841 |
| Victoria | 09:34:09 | -56.0 | Dark | Down | 61.9 | 181.4 | Up | 09:28:42 - 09:39:37 | 814 |
| Wenatchee | 09:33:58 | -55.8 | Dark | Down | 62.9 | 187.7 | Up | 09:28:30 - 09:39:25 | 793 |
| Ellensburg | 09:33:58 | -56.2 | Dark | Down | 63.3 | 187.3 | Up | 09:28:30 - 09:39:25 | 749 |
| Pasco | 09:33:52 | -56.3 | Dark | Down | 63.9 | 190.5 | Up | 09:28:24 - 09:39:19 | 720 |
| Yakima | 09:33:57 | -56.6 | Dark | Down | 63.7 | 187.4 | Up | 09:28:29 - 09:39:24 | 711 |
| PNWRO | 09:33:50 | -56.4 | Dark | Down | 64.1 | 191.1 | Up | 09:28:23 - 09:39:18 | 703 |
| Toppenish/White Swan | 09:33:56 | -56.7 | Dark | Down | 63.9 | 187.8 | Up | 09:28:28 - 09:39:23 | 696 |
| Goldendale | 09:33:56 | -57.3 | Dark | Down | 64.5 | 187.0 | Up | 09:28:29 - 09:39:24 | 633 |
| Dunrhomin | 09:32:53 | -52.3 | Dark | Down | 64.6 | 224.3 | Up | 09:27:25 - 09:38:20 | 624 |
| The Dalles | 09:33:57 | -57.6 | Dark | Down | 64.8 | 186.3 | Up | 09:28:30 - 09:39:25 | 601 |
| Maupin | 09:33:56 | -57.9 | Dark | Down | 65.2 | 186.6 | Up | 09:28:29 - 09:39:24 | 565 |
| Redmond | 09:33:55 | -58.7 | Dark | Down | 66.1 | 186.6 | Up | 09:28:27 - 09:39:22 | 478 |
| Sisters | 09:33:56 | -58.8 | Dark | Down | 66.1 | 185.7 | Up | 09:28:29 - 09:39:24 | 469 |
| Bend | 09:33:55 | -58.9 | Dark | Down | 66.3 | 186.4 | Up | 09:28:28 - 09:39:23 | 454 |
| Oregon Observatory | 09:33:55 | -59.1 | Dark | Down | 66.5 | 186.1 | Up | 09:28:28 - 09:39:23 | 434 |
| La Pine/Gilchrist | 09:33:55 | -59.3 | Dark | Down | 66.7 | 186.0 | Up | 09:28:28 - 09:39:23 | 413 |
| North Lake | 09:33:52 | -59.4 | Dark | Down | 67.1 | 187.5 | Up | 09:28:25 - 09:39:20 | 388 |
| Paisley | 09:33:50 | -59.7 | Dark | Down | 67.6 | 188.6 | Up | 09:28:22 - 09:39:17 | 346 |
| Lakeview | 09:33:48 | -60.0 | Dark | Down | 68.1 | 189.2 | Up | 09:28:21 - 09:39:16 | 304 |
| Chiloquin | 09:33:54 | -60.4 | Dark | Down | 67.8 | 185.4 | Up | 09:28:27 - 09:39:22 | 296 |
| Klamath Falls | 09:33:53 | -60.6 | Dark | Down | 68.2 | 185.7 | Up | 09:28:26 - 09:39:21 | 266 |
| Cedarville | 09:33:47 | -60.4 | Dark | Down | 68.7 | 189.9 | Up | 09:28:19 - 09:39:14 | 246 |
| Fall River/Burney | 09:33:50 | -61.3 | Dark | Down | 69.3 | 187.0 | Up | 09:28:23 - 09:39:18 | 163 |
| Susanville | 09:33:46 | -61.5 | Dark | Down | 69.8 | 189.2 | Up | 09:28:19 - 09:39:14 | 124 |
| Gimple | 09:33:47 | -61.8 | Dark | Down | 70.1 | 188.7 | Up | 09:28:19 - 09:39:14 | 91 |
| Greenville | 09:33:47 | -61.8 | Dark | Down | 70.2 | 188.5 | Up | 09:28:19 - 09:39:14 | 88 |
| Portola | 09:33:45 | -61.8 | Dark | Down | 70.4 | 189.9 | Up | 09:28:17 - 09:39:12 | 71 |
| Quincy | 09:33:47 | -62.0 | Dark | Down | 70.4 | 188.6 | Up | 09:28:19 - 09:39:14 | 69 |
| Reno | 09:33:42 | -61.7 | Dark | Down | 70.6 | 191.8 | Up | 09:28:14 - 09:39:09 | 65 |
| Yerington | 09:33:38 | -61.7 | Dark | Down | 71.0 | 194.0 | Up | 09:28:11 - 09:39:06 | 32 |
| Carson City | 09:33:41 | -61.9 | Dark | Down | 70.9 | 192.1 | Up | 09:28:14 - 09:39:09 | 31 |
| Gardnerville | 09:33:41 | -62.1 | Dark | Down | 71.2 | 192.4 | Up | 09:28:13 - 09:39:08 | 9 |
| Tonopah | 09:33:30 | -61.2 | Dark | Down | 71.5 | 200.2 | Up | 09:28:02 - 09:38:57 | 4 |
| Hawthorne | 09:33:36 | -61.7 | Dark | Down | 71.4 | 195.8 | Up | 09:28:08 - 09:39:03 | 3 |
| Lee Vining | 09:33:36 | -62.4 | Dark | Down | 72.0 | 194.8 | Up | 09:28:09 - 09:39:04 | -67 |
| Indian Springs | 09:33:21 | -61.2 | Dark | Down | 72.4 | 206.3 | Up | 09:27:54 - 09:38:49 | -89 |
| Beatty | 09:33:26 | -61.7 | Dark | Down | 72.4 | 202.8 | Up | 09:27:58 - 09:38:53 | -94 |
| Bishop | 09:33:33 | -62.4 | Dark | Down | 72.4 | 197.5 | Up | 09:28:05 - 09:39:00 | -102 |
| Henderson | 09:33:17 | -61.0 | Dark | Down | 72.6 | 209.0 | Up | 09:27:50 - 09:38:45 | -117 |
| Patrick | 09:33:12 | -60.6 | Dark | Down | 72.7 | 213.1 | Up | 09:27:45 - 09:38:40 | -139 |
| Kingman/Dolan Springs | 09:33:12 | -60.9 | Dark | Down | 72.9 | 213.0 | Up | 09:27:45 - 09:38:40 | -168 |
| Laughlin/Bullhead City | 09:33:14 | -61.2 | Dark | Down | 73.2 | 211.5 | Up | 09:27:47 - 09:38:42 | -188 |
| Mohave Valley | 09:33:14 | -61.4 | Dark | Down | 73.4 | 212.0 | Up | 09:27:46 - 09:38:41 | -214 |
| George/Scottsdale | 09:33:01 | -60.0 | Dark | Down | 73.0 | 221.7 | Up | 09:27:34 - 09:38:29 | -232 |
| Lake Havasu City | 09:33:12 | -61.4 | Dark | Down | 73.6 | 213.5 | Up | 09:27:44 - 09:38:39 | -245 |
| Parker | 09:33:11 | -61.6 | Dark | Down | 73.9 | 214.2 | Up | 09:27:43 - 09:38:38 | -278 |
| Blythe | 09:33:11 | -62.0 | Dark | Down | 74.5 | 214.4 | Up | 09:27:43 - 09:38:38 | -340 |
| CPSLO | 09:33:37 | -65.1 | Dark | Down | 74.9 | 192.0 | Up | 09:28:10 - 09:39:05 | -379 |
| Idyllwild | 09:33:19 | -63.5 | Dark | Down | 75.3 | 207.5 | Up | 09:27:52 - 09:38:47 | -403 |
| Calipatria | 09:33:14 | -63.0 | Dark | Down | 75.3 | 212.5 | Up | 09:27:46 - 09:38:41 | -422 |
| Wildwood | 09:33:27 | -64.5 | Dark | Down | 75.6 | 200.4 | Up | 09:28:00 - 09:38:55 | -432 |
| Yuma | 09:33:09 | -62.5 | Dark | Down | 75.3 | 216.2 | Up | 09:27:42 - 09:38:37 | -433 |
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 136204, (2022/01/31 09:34UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 8.73 150 PPM 100044 10:02:48.9 +21:56:57 5.4 1.61 155 PPM 099985 09:57:42.8 +20:10:14 8.3 0.63 155 PPM 100002 09:59:11.9 +20:24:52 9.3 0.22 155 136204 10:00:06.4 +20:27:56 14.0 155 Positions are for J2000
Event circumstances last updated at 2021/04/21 22:34:50 UT
Marc W. Buie, Southwest Research Institute