Event between (342842) 08YB3 and star GA1120:11381388 with event index number of 2205629
Geocentric closest approach at 2027/08/01 06:27:54 UTC
J2000 position of star is 19:50:23.8 +23:18:26
Equinox of date position of star is 19:51:20.4 +23:21:51
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 133 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=21.6
[RECON map]
TNO is 16.4 AU from the Sun
and 15.6 AU from the Earth.
The TNO is moving 31.9
km/sec on the sky relative to the star, or,
10.1 arcsec/hr.
The 1-sigma error in the time of the event is 38 seconds.
The 1-sigma cross-track error in the shadow position is
1959 km.
The sky-plane scale is
11313.0 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=82.8 km assuming a 5% albedo -- 2.6 sec chord
Diameter=33.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2027/08/01 06:29UT) Object RA Dec mag sep mel Vega 18:37:52.3 +38:48:37 0.0 21.99 116 Tarazed 19:47:34.2 +10:40:56 2.7 12.73 146 12 Vul 19:52:15.4 +22:40:54 4.7 0.71 134 PPM 109893 19:53:16.3 +23:20:39 8.4 0.39 133 PPM 109820 19:51:21.8 +23:23:13 9.8 0.05 133 342842 19:51:34.6 +23:22:43 15.7 133 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 26.1 km
RECON observability=1.0 and success probability=4.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 06:27:38 | -17.8 | AT | Down | 61.2 | 157.8 | Up | 06:23:58 - 06:31:19 | 6363 |
| Victoria | 06:27:48 | -18.9 | Dark | Down | 62.3 | 150.5 | Up | 06:24:08 - 06:31:29 | 6302 |
| Peachland | 06:27:39 | -18.8 | Dark | Down | 62.2 | 158.3 | Up | 06:23:58 - 06:31:19 | 6266 |
| Kelowna | 06:27:38 | -18.8 | Dark | Down | 62.2 | 158.9 | Up | 06:23:58 - 06:31:19 | 6264 |
| Summerland | 06:27:39 | -19.0 | Dark | Down | 62.4 | 158.4 | Up | 06:23:59 - 06:31:20 | 6251 |
| Penticton | 06:27:39 | -19.1 | Dark | Down | 62.5 | 158.5 | Up | 06:23:58 - 06:31:19 | 6241 |
| Oliver | 06:27:40 | -19.4 | Dark | Down | 62.8 | 158.3 | Up | 06:23:59 - 06:31:20 | 6212 |
| Anarchist Mountain Observatory | 06:27:40 | -19.6 | Dark | Down | 63.0 | 158.6 | Up | 06:23:59 - 06:31:20 | 6191 |
| Tonasket | 06:27:40 | -19.9 | Dark | Down | 63.3 | 158.2 | Up | 06:24:00 - 06:31:21 | 6168 |
| Okanogan | 06:27:41 | -20.1 | Dark | Down | 63.6 | 157.7 | Up | 06:24:00 - 06:31:21 | 6145 |
| Brewster | 06:27:43 | -20.3 | Dark | Down | 63.8 | 157.1 | Up | 06:24:02 - 06:31:23 | 6130 |
| Manson/Chelan | 06:27:43 | -20.4 | Dark | Down | 63.9 | 156.2 | Up | 06:24:03 - 06:31:24 | 6127 |
| Wenatchee | 06:27:45 | -20.8 | Dark | Down | 64.2 | 155.4 | Up | 06:24:04 - 06:31:25 | 6094 |
| Ellensburg | 06:27:45 | -21.1 | Dark | Down | 64.6 | 154.6 | Up | 06:24:05 - 06:31:26 | 6068 |
| Yakima | 06:27:46 | -21.5 | Dark | Down | 64.9 | 154.2 | Up | 06:24:06 - 06:31:27 | 6034 |
| Sleaford | 06:27:08 | -19.2 | Dark | Down | 61.1 | 185.5 | Up | 06:23:28 - 06:30:49 | 6015 |
| Toppenish/White Swan | 06:27:46 | -21.7 | Dark | Down | 65.2 | 154.4 | Up | 06:24:06 - 06:31:27 | 6009 |
| Goldendale | 06:27:49 | -22.1 | Dark | Down | 65.5 | 153.0 | Up | 06:24:08 - 06:31:29 | 5979 |
| The Dalles | 06:27:50 | -22.2 | Dark | Down | 65.6 | 152.0 | Up | 06:24:09 - 06:31:30 | 5975 |
| Maupin | 06:27:50 | -22.6 | Dark | Down | 66.0 | 151.8 | Up | 06:24:09 - 06:31:30 | 5935 |
| PNWRO | 06:27:44 | -22.5 | Dark | Down | 65.9 | 157.2 | Up | 06:24:04 - 06:31:25 | 5920 |
| Sisters | 06:27:53 | -23.2 | Dark | Down | 66.6 | 149.8 | Up | 06:24:13 - 06:31:34 | 5880 |
| Bend | 06:27:52 | -23.5 | Dark | Down | 66.9 | 150.1 | Up | 06:24:12 - 06:31:33 | 5850 |
| Oregon Observatory | 06:27:54 | -23.6 | Dark | Down | 67.0 | 149.6 | Up | 06:24:13 - 06:31:34 | 5840 |
| North Lake | 06:27:54 | -24.4 | Dark | Down | 67.8 | 150.0 | Up | 06:24:13 - 06:31:34 | 5763 |
| Chiloquin | 06:27:57 | -24.7 | Dark | Down | 68.0 | 147.0 | Up | 06:24:16 - 06:31:37 | 5744 |
| Klamath Falls | 06:27:57 | -25.0 | Dark | Down | 68.3 | 146.7 | Up | 06:24:17 - 06:31:38 | 5711 |
| Lakeview | 06:27:54 | -25.5 | Dark | Down | 68.9 | 149.9 | Up | 06:24:13 - 06:31:34 | 5649 |
| Fall River/Burney | 06:27:58 | -26.2 | Dark | Down | 69.5 | 145.9 | Up | 06:24:18 - 06:31:39 | 5593 |
| Cedarville | 06:27:55 | -26.1 | Dark | Down | 69.5 | 149.5 | Up | 06:24:14 - 06:31:35 | 5584 |
| Susanville | 06:27:58 | -27.0 | Dark | Down | 70.3 | 146.7 | Up | 06:24:18 - 06:31:39 | 5506 |
| Greenville | 06:27:59 | -27.1 | Dark | Down | 70.4 | 145.6 | Up | 06:24:18 - 06:31:39 | 5494 |
| Gimple | 06:27:59 | -27.2 | Dark | Down | 70.4 | 145.8 | Up | 06:24:19 - 06:31:40 | 5490 |
| Quincy | 06:27:59 | -27.3 | Dark | Down | 70.6 | 145.3 | Up | 06:24:19 - 06:31:40 | 5476 |
| Portola | 06:27:59 | -27.6 | Dark | Down | 70.9 | 146.3 | Up | 06:24:19 - 06:31:40 | 5444 |
| Reno | 06:27:58 | -28.0 | Dark | Down | 71.4 | 147.5 | Up | 06:24:17 - 06:31:38 | 5392 |
| Carson City | 06:27:58 | -28.4 | Dark | Down | 71.7 | 146.9 | Up | 06:24:18 - 06:31:39 | 5359 |
| Gardnerville | 06:27:58 | -28.6 | Dark | Down | 71.9 | 146.7 | Up | 06:24:18 - 06:31:39 | 5335 |
| Yerington | 06:27:57 | -28.8 | Dark | Down | 72.1 | 148.3 | Up | 06:24:17 - 06:31:38 | 5314 |
| Hawthorne | 06:27:57 | -29.4 | Dark | Down | 72.7 | 149.0 | Up | 06:24:17 - 06:31:38 | 5250 |
| Lee Vining | 06:27:59 | -29.7 | Dark | Down | 73.0 | 146.7 | Up | 06:24:18 - 06:31:39 | 5220 |
| Tonopah | 06:27:55 | -30.3 | Dark | Down | 73.7 | 152.3 | Up | 06:24:14 - 06:31:35 | 5146 |
| Bishop | 06:27:58 | -30.5 | Dark | Down | 73.8 | 147.6 | Up | 06:24:18 - 06:31:39 | 5133 |
| Beatty | 06:27:55 | -31.5 | Dark | Down | 74.9 | 151.8 | Up | 06:24:15 - 06:31:36 | 5020 |
| Indian Springs | 06:27:53 | -32.1 | Dark | Down | 75.5 | 154.7 | Up | 06:24:12 - 06:31:33 | 4943 |
| Dunrhomin | 06:27:22 | -31.0 | Dark | Down | 72.8 | 191.6 | Up | 06:23:41 - 06:31:02 | 4882 |
| Henderson | 06:27:53 | -32.8 | Dark | Down | 76.3 | 156.3 | Up | 06:24:12 - 06:31:33 | 4863 |
| Wildwood | 06:28:05 | -33.4 | Dark | Down | 76.4 | 139.8 | Up | 06:24:24 - 06:31:45 | 4841 |
| Laughlin/Bullhead City | 06:27:53 | -33.7 | Dark | Down | 77.2 | 156.3 | Up | 06:24:12 - 06:31:33 | 4763 |
| Patrick | 06:27:50 | -33.7 | Dark | Down | 77.2 | 159.5 | Up | 06:24:10 - 06:31:31 | 4756 |
| Kingman/Dolan Springs | 06:27:51 | -33.9 | Dark | Down | 77.3 | 158.4 | Up | 06:24:11 - 06:31:32 | 4743 |
| Mohave Valley | 06:27:53 | -34.0 | Dark | Down | 77.4 | 155.9 | Up | 06:24:13 - 06:31:34 | 4737 |
| Idyllwild | 06:28:01 | -34.4 | Dark | Down | 77.6 | 145.2 | Up | 06:24:20 - 06:31:41 | 4722 |
| Lake Havasu City | 06:27:53 | -34.4 | Dark | Down | 77.9 | 156.1 | Up | 06:24:13 - 06:31:34 | 4688 |
| Parker | 06:27:54 | -34.8 | Dark | Down | 78.2 | 155.6 | Up | 06:24:13 - 06:31:34 | 4653 |
| Calipatria | 06:27:59 | -35.3 | Dark | Down | 78.6 | 148.2 | Up | 06:24:19 - 06:31:40 | 4611 |
| Yuma | 06:27:57 | -36.0 | Dark | Down | 79.4 | 150.9 | Up | 06:24:17 - 06:31:38 | 4530 |
| George/Scottsdale | 06:27:49 | -35.9 | Dark | Down | 79.3 | 165.8 | Up | 06:24:08 - 06:31:29 | 4508 |
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 342842, (2027/08/01 06:29UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 21.99 116 Tarazed 19:46:15.6 +10:36:48 2.7 12.73 146 12 Vul 19:51:04.1 +22:36:36 4.7 0.71 134 PPM 109893 19:52:05.5 +23:16:18 8.4 0.39 133 PPM 109820 19:50:11.1 +23:18:56 9.8 0.05 133 342842 19:50:23.8 +23:18:26 15.7 133 Positions are for J2000
Event circumstances last updated at 2022/01/27 23:57:35 UT
Marc W. Buie, Southwest Research Institute