Event between (342842) 08YB3 and star GA1380:05678133 with event index number of 1146069
Geocentric closest approach at 2021/10/03 04:45:19 UTC
J2000 position of star is 19:45:55.8 +48:53:53
Equinox of date position of star is 19:46:32.0 +48:57:03
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 14.1 AU from the Sun
and 13.8 AU from the Earth.
The TNO is moving 34.9
km/sec on the sky relative to the star, or,
12.6 arcsec/hr.
The 1-sigma error in the time of the event is 35 seconds.
The 1-sigma cross-track error in the shadow position is
540 km.
The sky-plane scale is
9988.9 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.4 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2021/10/03 04:45UT) Object RA Dec mag sep mel Deneb 20:42:10.5 +45:21:32 1.3 10.10 115 PPM 058957 19:52:45.6 +47:59:19 5.5 1.41 108 PPM 058728 19:43:27.2 +48:29:18 8.4 0.69 107 PPM 058836 19:47:38.1 +48:59:12 9.2 0.18 107 342842 19:46:32.9 +48:57:08 16.8 107 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 16.4 km
RECON observability=1.0 and success probability=51.4%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 04:45:05 | -28.9 | Dark | Down | 74.6 | 280.3 | Up | 04:41:39 - 04:48:30 | 75 |
| Clarence Fulton | 04:44:56 | -30.2 | Dark | Down | 72.2 | 276.3 | Up | 04:41:30 - 04:48:21 | -69 |
| Peachland | 04:44:57 | -30.2 | Dark | Down | 72.4 | 277.7 | Up | 04:41:32 - 04:48:23 | -73 |
| Kelowna | 04:44:57 | -30.3 | Dark | Down | 72.2 | 277.5 | Up | 04:41:31 - 04:48:22 | -84 |
| Summerland | 04:44:58 | -30.4 | Dark | Down | 72.3 | 278.2 | Up | 04:41:32 - 04:48:23 | -88 |
| Penticton | 04:44:58 | -30.4 | Dark | Down | 72.2 | 278.4 | Up | 04:41:32 - 04:48:23 | -98 |
| Oliver | 04:44:59 | -30.6 | Dark | Down | 72.2 | 279.5 | Up | 04:41:33 - 04:48:24 | -119 |
| Anarchist Mountain Observatory | 04:44:59 | -30.9 | Dark | Down | 72.0 | 280.1 | Up | 04:41:33 - 04:48:24 | -141 |
| Tonasket | 04:45:00 | -31.0 | Dark | Down | 72.0 | 281.0 | Up | 04:41:34 - 04:48:25 | -155 |
| Manson/Chelan | 04:45:03 | -31.0 | Dark | Down | 72.3 | 283.3 | Up | 04:41:37 - 04:48:28 | -160 |
| Okanogan | 04:45:01 | -31.1 | Dark | Down | 72.0 | 282.0 | Up | 04:41:35 - 04:48:26 | -166 |
| Brewster | 04:45:02 | -31.1 | Dark | Down | 72.1 | 282.7 | Up | 04:41:36 - 04:48:27 | -169 |
| Wenatchee | 04:45:04 | -31.2 | Dark | Down | 72.3 | 284.7 | Up | 04:41:39 - 04:48:30 | -177 |
| Ellensburg | 04:45:06 | -31.3 | Dark | Down | 72.3 | 285.9 | Up | 04:41:40 - 04:48:31 | -187 |
| Yakima | 04:45:07 | -31.5 | Dark | Down | 72.2 | 287.1 | Up | 04:41:41 - 04:48:32 | -209 |
| The Dalles | 04:45:10 | -31.7 | Dark | Down | 72.3 | 290.1 | Up | 04:41:45 - 04:48:36 | -226 |
| Toppenish/White Swan | 04:45:07 | -31.7 | Dark | Down | 72.0 | 287.8 | Up | 04:41:42 - 04:48:33 | -232 |
| Goldendale | 04:45:09 | -31.8 | Dark | Down | 72.1 | 289.4 | Up | 04:41:44 - 04:48:35 | -236 |
| Maupin | 04:45:11 | -31.9 | Dark | Down | 72.1 | 291.3 | Up | 04:41:46 - 04:48:37 | -256 |
| Sisters | 04:45:14 | -32.1 | Dark | Down | 72.1 | 293.8 | Up | 04:41:49 - 04:48:40 | -273 |
| Redmond | 04:45:14 | -32.4 | Dark | Down | 71.8 | 293.8 | Up | 04:41:48 - 04:48:39 | -300 |
| Bend | 04:45:15 | -32.4 | Dark | Down | 71.8 | 294.5 | Up | 04:41:49 - 04:48:40 | -303 |
| Oregon Observatory | 04:45:15 | -32.4 | Dark | Down | 71.8 | 295.0 | Up | 04:41:50 - 04:48:41 | -304 |
| La Pine/Gilchrist | 04:45:16 | -32.4 | Dark | Down | 71.8 | 295.5 | Up | 04:41:50 - 04:48:41 | -311 |
| Pasco | 04:45:06 | -32.5 | Dark | Down | 71.2 | 288.2 | Up | 04:41:41 - 04:48:32 | -317 |
| PNWRO | 04:45:06 | -32.8 | Dark | Down | 70.9 | 288.9 | Up | 04:41:41 - 04:48:32 | -346 |
| Chiloquin | 04:45:19 | -32.8 | Dark | Down | 71.5 | 298.6 | Up | 04:41:54 - 04:48:45 | -347 |
| Klamath Falls | 04:45:20 | -33.0 | Dark | Down | 71.3 | 299.5 | Up | 04:41:55 - 04:48:46 | -370 |
| North Lake | 04:45:16 | -33.0 | Dark | Down | 71.2 | 296.6 | Up | 04:41:51 - 04:48:42 | -374 |
| Paisley | 04:45:17 | -33.5 | Dark | Down | 70.7 | 297.9 | Up | 04:41:52 - 04:48:43 | -428 |
| Fall River/Burney | 04:45:23 | -33.8 | Dark | Down | 70.4 | 302.2 | Up | 04:41:57 - 04:48:48 | -458 |
| Lakeview | 04:45:18 | -33.9 | Dark | Down | 70.3 | 299.1 | Up | 04:41:53 - 04:48:44 | -468 |
| Cedarville | 04:45:20 | -34.4 | Dark | Down | 69.9 | 300.6 | Up | 04:41:55 - 04:48:46 | -516 |
| Greenville | 04:45:25 | -34.5 | Dark | Down | 69.6 | 304.1 | Up | 04:41:59 - 04:48:50 | -537 |
| Susanville | 04:45:24 | -34.6 | Dark | Down | 69.6 | 303.3 | Up | 04:41:58 - 04:48:49 | -543 |
| Gimple | 04:45:25 | -34.6 | Dark | Down | 69.6 | 304.0 | Up | 04:41:59 - 04:48:50 | -543 |
| Quincy | 04:45:25 | -34.6 | Dark | Down | 69.5 | 304.5 | Up | 04:42:00 - 04:48:51 | -548 |
| Portola | 04:45:25 | -35.0 | Dark | Down | 69.1 | 304.6 | Up | 04:42:00 - 04:48:51 | -588 |
| Reno | 04:45:25 | -35.6 | Dark | Down | 68.6 | 304.8 | Up | 04:41:59 - 04:48:50 | -647 |
| Carson City | 04:45:26 | -35.8 | Dark | Down | 68.3 | 305.5 | Up | 04:42:00 - 04:48:51 | -667 |
| Gardnerville | 04:45:26 | -35.9 | Dark | Down | 68.2 | 306.0 | Up | 04:42:01 - 04:48:52 | -683 |
| Yerington | 04:45:26 | -36.3 | Dark | Down | 67.8 | 305.6 | Up | 04:42:00 - 04:48:51 | -721 |
| Lee Vining | 04:45:28 | -36.8 | Dark | Down | 67.2 | 307.6 | Up | 04:42:03 - 04:48:54 | -779 |
| Hawthorne | 04:45:26 | -36.9 | Dark | Down | 67.2 | 306.3 | Up | 04:42:01 - 04:48:52 | -782 |
| CPSLO | 04:45:37 | -36.9 | Dark | Down | 66.4 | 313.2 | Up | 04:42:12 - 04:49:03 | -804 |
| Bishop | 04:45:29 | -37.6 | Dark | Down | 66.3 | 308.3 | Up | 04:42:03 - 04:48:54 | -861 |
| Tonopah | 04:45:25 | -38.1 | Dark | Down | 66.0 | 306.5 | Up | 04:42:00 - 04:48:51 | -905 |
| Beatty | 04:45:28 | -39.0 | Dark | Down | 65.0 | 308.3 | Up | 04:42:02 - 04:48:53 | -998 |
| Wildwood | 04:45:38 | -39.0 | Dark | Down | 64.3 | 313.8 | Up | 04:42:12 - 04:49:03 | -1015 |
| Indian Springs | 04:45:27 | -39.9 | Dark | Down | 64.2 | 308.4 | Up | 04:42:02 - 04:48:53 | -1089 |
| Henderson | 04:45:27 | -40.6 | Dark | Down | 63.4 | 308.9 | Up | 04:42:02 - 04:48:53 | -1165 |
| Idyllwild | 04:45:36 | -40.5 | Dark | Down | 62.9 | 313.2 | Up | 04:42:11 - 04:49:02 | -1169 |
| Laughlin/Bullhead City | 04:45:29 | -41.4 | Dark | Down | 62.6 | 310.1 | Up | 04:42:04 - 04:48:55 | -1240 |
| Mohave Valley | 04:45:30 | -41.5 | Dark | Down | 62.4 | 310.4 | Up | 04:42:04 - 04:48:55 | -1256 |
| Kingman/Dolan Springs | 04:45:29 | -41.7 | Dark | Down | 62.3 | 309.8 | Up | 04:42:03 - 04:48:54 | -1275 |
| Patrick | 04:45:28 | -41.7 | Dark | Down | 62.3 | 309.4 | Up | 04:42:02 - 04:48:53 | -1275 |
| Calipatria | 04:45:36 | -41.7 | Dark | Down | 61.8 | 313.4 | Up | 04:42:11 - 04:49:02 | -1283 |
| Lake Havasu City | 04:45:31 | -41.9 | Dark | Down | 62.0 | 310.9 | Up | 04:42:05 - 04:48:56 | -1294 |
| Parker | 04:45:32 | -42.1 | Dark | Down | 61.7 | 311.4 | Up | 04:42:06 - 04:48:57 | -1315 |
| Blythe | 04:45:33 | -42.2 | Dark | Down | 61.6 | 312.3 | Up | 04:42:08 - 04:48:59 | -1323 |
| Yuma | 04:45:36 | -42.6 | Dark | Down | 60.9 | 313.5 | Up | 04:42:10 - 04:49:01 | -1369 |
| George/Scottsdale | 04:45:29 | -44.1 | Dark | Down | 59.9 | 310.9 | Up | 04:42:03 - 04:48:54 | -1502 |
| Dunrhomin | 04:45:02 | -44.2 | Dark | Down | 59.5 | 300.5 | Up | 04:41:37 - 04:48:28 | -1503 |
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, (2021/10/03 04:45UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 10.10 115 PPM 058957 19:52:07.1 +47:55:54 5.5 1.41 108 PPM 058728 19:42:49.9 +48:26:08 8.4 0.69 107 PPM 058836 19:47:01.0 +48:55:55 9.2 0.18 107 342842 19:45:55.8 +48:53:53 16.8 107 Positions are for J2000
Event circumstances last updated at 2021/04/10 00:45:20 UT
Marc W. Buie, Southwest Research Institute