Event between 14QW441 and star GA0800:00058322 with event index number of 1149223
Geocentric closest approach at 2021/08/15 07:04:00 UTC
J2000 position of star is 00:43:07.3 -08:38:14
Equinox of date position of star is 00:44:11.3 -08:31:19
Stellar brightness G=14.0,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 137 degrees from the moon.
Moon is 46% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 39.7 AU from the Sun
and 39.0 AU from the Earth.
The TNO is moving 18.1
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
1554 km.
The sky-plane scale is
28306.1 km/arcsec.
The TNO has an absolute magnitude Hv=5.2
Diameter=542.0 km assuming a 5% albedo -- 30.0 sec chord
Diameter=221.3 km assuming a 30% albedo -- 12.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 14QW441, (2021/08/15 07:04UT) Object RA Dec mag sep mel Fomalhaut 22:58:50.4 -29:30:26 1.2 32.41 105 Diphda 00:44:40.4 -17:52:06 2.0 9.35 132 19Phi2Cet 00:51:12.6 -10:31:42 5.2 2.65 138 PPM 182547 00:42:56.8 -07:58:14 8.0 0.63 137 PPM 182576 00:44:17.5 -08:39:46 9.7 0.14 137 14QW441 00:44:13.0 -08:31:08 14.0 138 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 8.1 km
RECON observability=0.2 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Victoria | 07:03:19 | -25.4 | Dark | Down | 9.8 | 115.2 | Really Low | 06:55:39 - 07:10:59 | 6410 |
| Sisters | 07:03:40 | -29.8 | Dark | Down | 12.8 | 115.9 | Really Low | 06:56:00 - 07:11:20 | 6380 |
| The Dalles | 07:03:32 | -28.6 | Dark | Down | 12.5 | 116.4 | Really Low | 06:55:52 - 07:11:12 | 6376 |
| La Pine/Gilchrist | 07:03:44 | -30.4 | Dark | Down | 13.1 | 115.8 | Really Low | 06:56:04 - 07:11:24 | 6376 |
| Oregon Observatory | 07:03:42 | -30.2 | Dark | Down | 13.1 | 115.9 | Really Low | 06:56:02 - 07:11:22 | 6376 |
| Bend | 07:03:41 | -30.1 | Dark | Down | 13.1 | 116.1 | Really Low | 06:56:01 - 07:11:21 | 6374 |
| Maupin | 07:03:34 | -29.0 | Dark | Down | 12.7 | 116.4 | Really Low | 06:55:54 - 07:11:14 | 6374 |
| Redmond | 07:03:40 | -29.9 | Dark | Down | 13.1 | 116.2 | Really Low | 06:56:00 - 07:11:20 | 6373 |
| Klamath Falls | 07:03:52 | -31.7 | Dark | Down | 13.6 | 115.4 | Really Low | 06:56:12 - 07:11:32 | 6371 |
| Goldendale | 07:03:30 | -28.5 | Dark | Down | 12.6 | 116.8 | Really Low | 06:55:50 - 07:11:10 | 6371 |
| Yakima | 07:03:25 | -27.8 | Dark | Down | 12.4 | 117.1 | Really Low | 06:55:45 - 07:11:05 | 6367 |
| Ellensburg | 07:03:23 | -27.4 | Dark | Down | 12.2 | 117.2 | Really Low | 06:55:43 - 07:11:03 | 6367 |
| Toppenish/White Swan | 07:03:26 | -28.0 | Dark | Down | 12.6 | 117.2 | Really Low | 06:55:46 - 07:11:06 | 6363 |
| North Lake | 07:03:45 | -30.9 | Dark | Down | 13.7 | 116.2 | Really Low | 06:56:05 - 07:11:25 | 6362 |
| Wenatchee | 07:03:20 | -27.1 | Dark | Down | 12.1 | 117.4 | Really Low | 06:55:40 - 07:11:00 | 6362 |
| Manson/Chelan | 07:03:18 | -26.6 | Dark | Down | 12.0 | 117.7 | Really Low | 06:55:38 - 07:10:58 | 6358 |
| Fall River/Burney | 07:03:58 | -32.9 | Dark | Down | 14.4 | 115.4 | Really Low | 06:56:18 - 07:11:38 | 6352 |
| Brewster | 07:03:16 | -26.5 | Dark | Down | 12.1 | 118.0 | Really Low | 06:55:36 - 07:10:56 | 6351 |
| Paisley | 07:03:47 | -31.5 | Dark | Down | 14.2 | 116.4 | Really Low | 06:56:07 - 07:11:27 | 6351 |
| Okanogan | 07:03:13 | -26.3 | Dark | Down | 12.1 | 118.2 | Really Low | 06:55:33 - 07:10:53 | 6347 |
| Peachland | 07:03:07 | -24.9 | Dark | Down | 11.3 | 118.3 | Really Low | 06:55:27 - 07:10:47 | 6345 |
| Summerland | 07:03:07 | -25.1 | Dark | Down | 11.5 | 118.3 | Really Low | 06:55:27 - 07:10:47 | 6344 |
| Oliver | 07:03:10 | -25.5 | Dark | Down | 11.7 | 118.4 | Really Low | 06:55:30 - 07:10:50 | 6344 |
| Lakeview | 07:03:49 | -32.1 | Dark | Down | 14.6 | 116.4 | Really Low | 06:56:09 - 07:11:29 | 6343 |
| Tonasket | 07:03:12 | -26.0 | Dark | Down | 12.0 | 118.4 | Really Low | 06:55:32 - 07:10:52 | 6343 |
| Penticton | 07:03:08 | -25.2 | Dark | Down | 11.6 | 118.4 | Really Low | 06:55:28 - 07:10:48 | 6342 |
| Anarchist Mountain Observatory | 07:03:09 | -25.7 | Dark | Down | 11.9 | 118.5 | Really Low | 06:55:29 - 07:10:49 | 6342 |
| Pasco | 07:03:25 | -28.4 | Dark | Down | 13.4 | 118.2 | Really Low | 06:55:45 - 07:11:05 | 6339 |
| Kelowna | 07:03:06 | -24.9 | Dark | Down | 11.4 | 118.5 | Really Low | 06:55:26 - 07:10:46 | 6339 |
| PNWRO | 07:03:26 | -28.7 | Dark | Down | 13.7 | 118.3 | Really Low | 06:55:46 - 07:11:06 | 6335 |
| Clarence Fulton | 07:03:03 | -24.5 | Dark | Down | 11.3 | 118.7 | Really Low | 06:55:23 - 07:10:43 | 6334 |
| Cedarville | 07:03:53 | -32.7 | Dark | Down | 15.0 | 116.4 | Really Low | 06:56:13 - 07:11:33 | 6334 |
| Greenville | 07:04:02 | -33.9 | Dark | Down | 15.1 | 115.5 | Really Low | 06:56:22 - 07:11:42 | 6333 |
| Gimple | 07:04:01 | -33.9 | Dark | Down | 15.1 | 115.6 | Really Low | 06:56:21 - 07:11:41 | 6331 |
| Susanville | 07:04:00 | -33.7 | Dark | Down | 15.2 | 115.8 | Really Low | 06:56:20 - 07:11:40 | 6331 |
| Quincy | 07:04:03 | -34.1 | Dark | Down | 15.2 | 115.5 | Really Low | 06:56:23 - 07:11:43 | 6330 |
| Portola | 07:04:03 | -34.3 | Dark | Down | 15.6 | 115.8 | Really Low | 06:56:23 - 07:11:43 | 6320 |
| Reno | 07:04:03 | -34.7 | Dark | Down | 16.1 | 116.2 | Really Low | 06:56:23 - 07:11:43 | 6302 |
| Carson City | 07:04:05 | -35.1 | Dark | Down | 16.3 | 116.1 | Really Low | 06:56:25 - 07:11:45 | 6297 |
| Gardnerville | 07:04:07 | -35.3 | Dark | Down | 16.5 | 116.1 | Really Low | 06:56:27 - 07:11:47 | 6292 |
| Yerington | 07:04:05 | -35.4 | Dark | Down | 16.8 | 116.5 | Really Low | 06:56:25 - 07:11:45 | 6280 |
| Lee Vining | 07:04:10 | -36.4 | Dark | Down | 17.3 | 116.3 | Really Low | 06:56:30 - 07:11:50 | 6263 |
| Hawthorne | 07:04:06 | -36.0 | Dark | Down | 17.4 | 116.8 | Really Low | 06:56:26 - 07:11:46 | 6261 |
| CPSLO | 07:04:28 | -38.6 | Dark | Down | 17.4 | 114.5 | Really Low | 06:56:48 - 07:12:08 | 6244 |
| Bishop | 07:04:11 | -37.1 | Dark | Down | 18.1 | 116.7 | Really Low | 06:56:31 - 07:11:51 | 6235 |
| Tonopah | 07:04:06 | -36.7 | Dark | Down | 18.6 | 117.7 | Really Low | 06:56:26 - 07:11:46 | 6220 |
| Beatty | 07:04:11 | -37.9 | Dark | Down | 19.5 | 117.7 | Really Low | 06:56:31 - 07:11:51 | 6187 |
| Wildwood | 07:04:30 | -40.2 | Dark | Down | 19.5 | 115.6 | Really Low | 06:56:50 - 07:12:10 | 6169 |
| Indian Springs | 07:04:10 | -38.5 | Dark | Down | 20.4 | 118.4 | Low | 06:56:30 - 07:11:50 | 6152 |
| Henderson | 07:04:11 | -39.1 | Dark | Down | 21.2 | 118.7 | Low | 06:56:31 - 07:11:51 | 6122 |
| Idyllwild | 07:04:28 | -41.0 | Dark | Down | 21.0 | 116.8 | Low | 06:56:48 - 07:12:08 | 6114 |
| Laughlin/Bullhead City | 07:04:16 | -40.0 | Dark | Down | 21.9 | 118.8 | Low | 06:56:36 - 07:11:56 | 6090 |
| Mohave Valley | 07:04:16 | -40.3 | Dark | Down | 22.0 | 118.7 | Low | 06:56:36 - 07:11:56 | 6083 |
| Kingman/Dolan Springs | 07:04:14 | -40.1 | Dark | Down | 22.2 | 119.1 | Low | 06:56:34 - 07:11:54 | 6077 |
| Patrick | 07:04:12 | -39.9 | Dark | Down | 22.3 | 119.4 | Low | 06:56:32 - 07:11:52 | 6077 |
| Lake Havasu City | 07:04:18 | -40.7 | Dark | Down | 22.4 | 118.7 | Low | 06:56:38 - 07:11:58 | 6067 |
| Calipatria | 07:04:28 | -41.9 | Dark | Down | 22.2 | 117.4 | Low | 06:56:48 - 07:12:08 | 6064 |
| Parker | 07:04:20 | -41.1 | Dark | Down | 22.6 | 118.6 | Low | 06:56:40 - 07:12:00 | 6057 |
| Blythe | 07:04:24 | -41.6 | Dark | Down | 22.6 | 118.2 | Low | 06:56:44 - 07:12:04 | 6051 |
| Yuma | 07:04:28 | -42.5 | Dark | Down | 23.1 | 117.8 | Low | 06:56:48 - 07:12:08 | 6027 |
| George/Scottsdale | 07:04:17 | -41.9 | Dark | Down | 24.6 | 120.2 | Low | 06:56:37 - 07:11:57 | 5973 |
| Dunrhomin | 07:03:26 | -35.8 | Dark | Down | 25.2 | 128.0 | Low | 06:55:46 - 07:11:06 | 5906 |
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 14QW441, (2021/08/15 07:04UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 32.41 105 Diphda 00:43:35.7 -17:59:11 2.0 9.35 132 19Phi2Cet 00:50:07.3 -10:38:44 5.2 2.65 138 PPM 182547 00:41:51.1 -08:05:20 8.0 0.63 137 PPM 182576 00:43:11.8 -08:46:51 9.7 0.14 137 14QW441 00:43:07.3 -08:38:14 14.0 137 Positions are for J2000
Event circumstances last updated at 2021/01/24 21:02:57 UT
Marc W. Buie, Southwest Research Institute