Event between (342842) 08YB3 and star GA1360:05725735 with event index number of 2201129
Geocentric closest approach at 2021/10/27 04:08:16 UTC
J2000 position of star is 19:45:32.9 +46:56:27
Equinox of date position of star is 19:46:12.0 +46:59:42
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 106 degrees from the moon.
Moon is 66% illuminated.
TNO apparent brightness V=21.1
[RECON map]
TNO is 14.1 AU from the Sun
and 14.0 AU from the Earth.
The TNO is moving 33.8
km/sec on the sky relative to the star, or,
12.0 arcsec/hr.
The 1-sigma error in the time of the event is 32 seconds.
The 1-sigma cross-track error in the shadow position is
532 km.
The sky-plane scale is
10121.5 km/arcsec.
The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 2.5 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 342842, (2021/10/27 04:09UT) Object RA Dec mag sep mel Deneb 20:42:10.6 +45:21:33 1.3 9.81 106 37Gam Cyg 20:23:00.7 +40:19:39 2.2 9.41 111 PPM 058954 19:52:38.5 +47:05:05 5.3 1.10 106 PPM 058741 19:44:01.2 +47:17:52 7.7 0.48 106 PPM 058768 19:45:05.5 +47:00:50 9.2 0.19 106 342842 19:46:12.0 +46:59:42 16.5 106 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 11.2 km
RECON observability=1.0 and success probability=2.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Dunrhomin | 04:08:10 | -46.2 | Dark | Up | 49.6 | 298.8 | Up | 04:05:00 - 04:11:20 | 2889 |
| George/Scottsdale | 04:08:37 | -43.6 | Dark | Down | 50.6 | 304.9 | Up | 04:05:27 - 04:11:47 | 2744 |
| Yuma | 04:08:44 | -41.7 | Dark | Down | 51.9 | 306.1 | Up | 04:05:34 - 04:11:54 | 2585 |
| Parker | 04:08:39 | -41.6 | Dark | Down | 52.5 | 304.5 | Up | 04:05:29 - 04:11:49 | 2563 |
| Blythe | 04:08:41 | -41.5 | Dark | Down | 52.4 | 305.1 | Up | 04:05:31 - 04:11:51 | 2559 |
| Patrick | 04:08:35 | -41.6 | Dark | Down | 53.0 | 303.1 | Up | 04:05:25 - 04:11:45 | 2551 |
| Lake Havasu City | 04:08:38 | -41.5 | Dark | Down | 52.8 | 304.1 | Up | 04:05:28 - 04:11:48 | 2550 |
| Kingman/Dolan Springs | 04:08:36 | -41.5 | Dark | Down | 53.0 | 303.4 | Up | 04:05:26 - 04:11:46 | 2546 |
| Mohave Valley | 04:08:37 | -41.2 | Dark | Down | 53.2 | 303.7 | Up | 04:05:27 - 04:11:47 | 2520 |
| Laughlin/Bullhead City | 04:08:36 | -41.1 | Dark | Down | 53.3 | 303.4 | Up | 04:05:26 - 04:11:46 | 2511 |
| Calipatria | 04:08:43 | -40.8 | Dark | Down | 52.8 | 305.7 | Up | 04:05:33 - 04:11:53 | 2508 |
| Henderson | 04:08:34 | -40.5 | Dark | Down | 54.1 | 302.4 | Up | 04:05:24 - 04:11:44 | 2454 |
| Idyllwild | 04:08:43 | -39.7 | Dark | Down | 53.9 | 305.1 | Up | 04:05:33 - 04:11:53 | 2406 |
| Indian Springs | 04:08:33 | -39.9 | Dark | Down | 54.8 | 301.8 | Up | 04:05:23 - 04:11:43 | 2389 |
| Beatty | 04:08:33 | -38.9 | Dark | Down | 55.7 | 301.4 | Up | 04:05:23 - 04:11:43 | 2303 |
| Wildwood | 04:08:44 | -38.1 | Dark | Down | 55.4 | 304.9 | Up | 04:05:34 - 04:11:54 | 2257 |
| Tonopah | 04:08:30 | -38.3 | Dark | Down | 56.7 | 299.9 | Up | 04:05:20 - 04:11:40 | 2234 |
| Bishop | 04:08:34 | -37.6 | Dark | Down | 57.1 | 300.8 | Up | 04:05:24 - 04:11:44 | 2174 |
| Hawthorne | 04:08:31 | -37.1 | Dark | Down | 57.8 | 299.2 | Up | 04:05:21 - 04:11:41 | 2120 |
| Lee Vining | 04:08:33 | -36.9 | Dark | Down | 57.9 | 300.0 | Up | 04:05:23 - 04:11:43 | 2104 |
| CPSLO | 04:08:42 | -36.2 | Dark | Down | 57.5 | 303.7 | Up | 04:05:32 - 04:11:52 | 2071 |
| Yerington | 04:08:30 | -36.6 | Dark | Down | 58.4 | 298.6 | Up | 04:05:20 - 04:11:40 | 2068 |
| Gardnerville | 04:08:30 | -36.1 | Dark | Down | 58.8 | 298.6 | Up | 04:05:20 - 04:11:40 | 2028 |
| Carson City | 04:08:30 | -36.0 | Dark | Down | 59.0 | 298.3 | Up | 04:05:20 - 04:11:40 | 2017 |
| Reno | 04:08:28 | -35.9 | Dark | Down | 59.2 | 297.7 | Up | 04:05:18 - 04:11:38 | 2004 |
| Portola | 04:08:28 | -35.4 | Dark | Down | 59.7 | 297.3 | Up | 04:05:18 - 04:11:38 | 1950 |
| Susanville | 04:08:27 | -35.1 | Dark | Down | 60.1 | 296.4 | Up | 04:05:17 - 04:11:37 | 1917 |
| Cedarville | 04:08:23 | -35.2 | Dark | Down | 60.3 | 294.7 | Up | 04:05:13 - 04:11:33 | 1913 |
| Quincy | 04:08:29 | -35.0 | Dark | Down | 60.1 | 297.1 | Up | 04:05:19 - 04:11:39 | 1912 |
| Gimple | 04:08:28 | -35.0 | Dark | Down | 60.1 | 296.8 | Up | 04:05:18 - 04:11:38 | 1911 |
| Greenville | 04:08:28 | -35.0 | Dark | Down | 60.2 | 296.8 | Up | 04:05:18 - 04:11:38 | 1905 |
| Lakeview | 04:08:21 | -34.9 | Dark | Down | 60.7 | 293.6 | Up | 04:05:11 - 04:11:31 | 1879 |
| Paisley | 04:08:20 | -34.6 | Dark | Down | 61.0 | 292.7 | Up | 04:05:10 - 04:11:30 | 1848 |
| Fall River/Burney | 04:08:25 | -34.4 | Dark | Down | 60.9 | 295.3 | Up | 04:05:15 - 04:11:35 | 1845 |
| PNWRO | 04:08:08 | -34.7 | Dark | Down | 61.1 | 287.5 | Up | 04:04:58 - 04:11:18 | 1830 |
| Pasco | 04:08:08 | -34.5 | Dark | Down | 61.3 | 287.0 | Up | 04:04:58 - 04:11:18 | 1806 |
| North Lake | 04:08:18 | -34.2 | Dark | Down | 61.5 | 291.7 | Up | 04:05:08 - 04:11:28 | 1805 |
| Klamath Falls | 04:08:22 | -33.8 | Dark | Down | 61.7 | 293.3 | Up | 04:05:12 - 04:11:32 | 1780 |
| Chiloquin | 04:08:22 | -33.7 | Dark | Down | 61.9 | 292.7 | Up | 04:05:12 - 04:11:32 | 1763 |
| Redmond | 04:08:15 | -33.7 | Dark | Down | 62.0 | 289.9 | Up | 04:05:05 - 04:11:25 | 1750 |
| La Pine/Gilchrist | 04:08:17 | -33.6 | Dark | Down | 62.0 | 290.8 | Up | 04:05:07 - 04:11:27 | 1749 |
| Bend | 04:08:16 | -33.7 | Dark | Down | 62.0 | 290.2 | Up | 04:05:06 - 04:11:26 | 1748 |
| Oregon Observatory | 04:08:17 | -33.6 | Dark | Down | 62.1 | 290.5 | Up | 04:05:07 - 04:11:27 | 1746 |
| Maupin | 04:08:12 | -33.5 | Dark | Down | 62.3 | 288.3 | Up | 04:05:02 - 04:11:22 | 1723 |
| Sisters | 04:08:16 | -33.4 | Dark | Down | 62.3 | 289.7 | Up | 04:05:06 - 04:11:26 | 1723 |
| Toppenish/White Swan | 04:08:08 | -33.6 | Dark | Down | 62.2 | 286.3 | Up | 04:04:58 - 04:11:18 | 1722 |
| Goldendale | 04:08:10 | -33.5 | Dark | Down | 62.3 | 287.2 | Up | 04:05:00 - 04:11:20 | 1716 |
| Yakima | 04:08:08 | -33.4 | Dark | Down | 62.4 | 285.9 | Up | 04:04:58 - 04:11:18 | 1703 |
| The Dalles | 04:08:12 | -33.3 | Dark | Down | 62.5 | 287.5 | Up | 04:05:02 - 04:11:22 | 1701 |
| Okanogan | 04:08:02 | -33.4 | Dark | Down | 62.2 | 283.0 | Up | 04:04:52 - 04:11:12 | 1693 |
| Brewster | 04:08:03 | -33.4 | Dark | Down | 62.2 | 283.4 | Up | 04:04:53 - 04:11:13 | 1692 |
| Ellensburg | 04:08:07 | -33.3 | Dark | Down | 62.5 | 285.1 | Up | 04:04:57 - 04:11:17 | 1689 |
| Tonasket | 04:08:01 | -33.4 | Dark | Down | 62.1 | 282.4 | Up | 04:04:51 - 04:11:11 | 1688 |
| Wenatchee | 04:08:05 | -33.3 | Dark | Down | 62.4 | 284.4 | Up | 04:04:55 - 04:11:15 | 1686 |
| Anarchist Mountain Observatory | 04:07:59 | -33.3 | Dark | Down | 62.2 | 281.9 | Up | 04:04:49 - 04:11:09 | 1680 |
| Manson/Chelan | 04:08:03 | -33.2 | Dark | Down | 62.4 | 283.6 | Up | 04:04:53 - 04:11:13 | 1678 |
| Oliver | 04:07:59 | -33.2 | Dark | Down | 62.3 | 281.5 | Up | 04:04:49 - 04:11:09 | 1661 |
| Penticton | 04:07:58 | -33.0 | Dark | Down | 62.4 | 280.8 | Up | 04:04:48 - 04:11:08 | 1646 |
| Kelowna | 04:07:57 | -33.0 | Dark | Down | 62.4 | 280.2 | Up | 04:04:47 - 04:11:07 | 1637 |
| Summerland | 04:07:58 | -32.9 | Dark | Down | 62.5 | 280.6 | Up | 04:04:48 - 04:11:08 | 1637 |
| Clarence Fulton | 04:07:56 | -32.9 | Dark | Down | 62.4 | 279.6 | Up | 04:04:46 - 04:11:06 | 1630 |
| Peachland | 04:07:58 | -32.8 | Dark | Down | 62.6 | 280.3 | Up | 04:04:48 - 04:11:08 | 1625 |
| Victoria | 04:08:04 | -31.0 | Dark | Down | 64.7 | 280.9 | Up | 04:04:54 - 04:11:14 | 1452 |
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, (2021/10/27 04:09UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 9.81 106 37Gam Cyg 20:22:13.7 +40:15:24 2.2 9.41 111 PPM 058954 19:51:59.1 +47:01:39 5.3 1.10 106 PPM 058741 19:43:22.5 +47:14:41 7.7 0.48 106 PPM 058768 19:44:26.4 +46:57:37 9.2 0.19 106 342842 19:45:32.9 +46:56:27 16.5 106 Positions are for J2000
Event circumstances last updated at 2021/10/25 23:19:50 UT
Marc W. Buie, Southwest Research Institute