Event between (523773) 14XS40 and star GA0840:03765422 with event index number of 2356712
Geocentric closest approach at 2021/11/04 10:47:18 UTC
J2000 position of star is 09:18:10.4 -05:17:35
Equinox of date position of star is 09:19:15.6 -05:23:07
Stellar brightness G=13.0,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 74 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=21.3
[RECON map]
TNO is 37.3 AU from the Sun
and 37.4 AU from the Earth.
The TNO is moving 13.4
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is
1926 km.
The sky-plane scale is
27156.6 km/arcsec.
The TNO has an absolute magnitude Hv=5.4
Diameter=505.8 km assuming a 5% albedo -- 37.7 sec chord
Diameter=206.5 km assuming a 30% albedo -- 15.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 523773, (2021/11/04 10:47UT) Object RA Dec mag sep mel Regulus 10:09:32.0 +11:51:35 1.3 21.30 66 Alphard 09:28:39.7 -08:45:16 2.0 4.10 71 23 Hya 09:17:46.8 -06:26:43 5.2 1.12 74 PPM 192228 09:18:48.7 -05:39:42 8.5 0.30 74 PPM 192230 09:18:56.3 -05:33:56 9.4 0.20 74 523773 09:19:15.8 -05:23:08 13.0 74 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 12.3 km
RECON observability=0.5 and success probability=1.0%
| 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 | 10:39:37 | -40.0 | Dark | Down | 17.1 | 121.4 | Really Low | 10:30:21 - 10:48:52 | 7452 |
| Kelowna | 10:39:35 | -40.3 | Dark | Down | 17.2 | 121.1 | Really Low | 10:30:20 - 10:48:51 | 7409 |
| Peachland | 10:39:35 | -40.5 | Dark | Down | 17.1 | 120.8 | Really Low | 10:30:20 - 10:48:51 | 7387 |
| Summerland | 10:39:37 | -40.6 | Dark | Down | 17.2 | 120.9 | Really Low | 10:30:21 - 10:48:52 | 7377 |
| Penticton | 10:39:37 | -40.5 | Dark | Down | 17.3 | 121.0 | Really Low | 10:30:21 - 10:48:52 | 7374 |
| Oliver | 10:39:37 | -40.7 | Dark | Down | 17.5 | 120.9 | Really Low | 10:30:21 - 10:48:52 | 7341 |
| Anarchist Mountain Observatory | 10:39:39 | -40.6 | Dark | Down | 17.7 | 121.0 | Really Low | 10:30:23 - 10:48:54 | 7332 |
| Tonasket | 10:39:37 | -40.8 | Dark | Down | 17.8 | 120.8 | Really Low | 10:30:22 - 10:48:53 | 7301 |
| Okanogan | 10:39:39 | -41.1 | Dark | Down | 17.9 | 120.6 | Really Low | 10:30:23 - 10:48:54 | 7263 |
| Dunrhomin | 10:40:23 | -33.4 | Dark | Down | 31.1 | 130.7 | Up | 10:31:08 - 10:49:39 | 7238 |
| Brewster | 10:39:40 | -41.3 | Dark | Down | 17.9 | 120.4 | Really Low | 10:30:25 - 10:48:56 | 7229 |
| Manson/Chelan | 10:39:39 | -41.6 | Dark | Down | 17.8 | 120.0 | Really Low | 10:30:23 - 10:48:54 | 7195 |
| Wenatchee | 10:39:40 | -41.9 | Dark | Down | 18.0 | 119.7 | Really Low | 10:30:25 - 10:48:56 | 7143 |
| Victoria | 10:39:36 | -43.2 | Dark | Down | 15.6 | 117.4 | Really Low | 10:30:20 - 10:48:51 | 7137 |
| Ellensburg | 10:39:41 | -42.2 | Dark | Down | 18.0 | 119.4 | Really Low | 10:30:25 - 10:48:56 | 7096 |
| Pasco | 10:39:41 | -41.7 | Dark | Down | 19.3 | 120.4 | Really Low | 10:30:26 - 10:48:57 | 7081 |
| PNWRO | 10:39:45 | -41.6 | Dark | Down | 19.5 | 120.5 | Really Low | 10:30:29 - 10:49:00 | 7067 |
| Yakima | 10:39:39 | -42.4 | Dark | Down | 18.2 | 119.3 | Really Low | 10:30:23 - 10:48:54 | 7056 |
| Toppenish/White Swan | 10:39:39 | -42.4 | Dark | Down | 18.4 | 119.4 | Really Low | 10:30:23 - 10:48:54 | 7042 |
| Goldendale | 10:39:39 | -42.9 | Dark | Down | 18.4 | 118.9 | Really Low | 10:30:23 - 10:48:54 | 6973 |
| The Dalles | 10:39:41 | -43.3 | Dark | Down | 18.3 | 118.5 | Really Low | 10:30:26 - 10:48:57 | 6937 |
| Maupin | 10:39:41 | -43.4 | Dark | Down | 18.6 | 118.5 | Really Low | 10:30:26 - 10:48:57 | 6901 |
| Redmond | 10:39:42 | -43.8 | Dark | Down | 19.0 | 118.1 | Really Low | 10:30:27 - 10:48:58 | 6811 |
| Sisters | 10:39:44 | -44.1 | Dark | Down | 18.7 | 117.8 | Really Low | 10:30:28 - 10:48:59 | 6797 |
| Bend | 10:39:46 | -44.0 | Dark | Down | 19.0 | 118.0 | Really Low | 10:30:30 - 10:49:01 | 6785 |
| Oregon Observatory | 10:39:42 | -44.2 | Dark | Down | 19.0 | 117.8 | Really Low | 10:30:27 - 10:48:58 | 6763 |
| La Pine/Gilchrist | 10:39:45 | -44.3 | Dark | Down | 19.0 | 117.7 | Really Low | 10:30:29 - 10:49:00 | 6741 |
| North Lake | 10:39:47 | -44.0 | Dark | Down | 19.6 | 118.0 | Really Low | 10:30:32 - 10:49:03 | 6724 |
| Paisley | 10:39:46 | -44.0 | Dark | Down | 20.1 | 118.1 | Low | 10:30:30 - 10:49:01 | 6688 |
| Lakeview | 10:39:49 | -44.1 | Dark | Down | 20.5 | 118.1 | Low | 10:30:34 - 10:49:05 | 6647 |
| Chiloquin | 10:39:47 | -45.0 | Dark | Down | 19.3 | 117.1 | Really Low | 10:30:32 - 10:49:03 | 6621 |
| Cedarville | 10:39:51 | -44.2 | Dark | Down | 20.9 | 118.1 | Low | 10:30:35 - 10:49:06 | 6593 |
| Klamath Falls | 10:39:46 | -45.0 | Dark | Down | 19.5 | 117.0 | Really Low | 10:30:30 - 10:49:01 | 6592 |
| Fall River/Burney | 10:39:49 | -45.2 | Dark | Down | 20.3 | 116.9 | Low | 10:30:34 - 10:49:05 | 6496 |
| Susanville | 10:39:56 | -44.9 | Dark | Down | 21.1 | 117.3 | Low | 10:30:41 - 10:49:12 | 6469 |
| Gimple | 10:39:54 | -45.2 | Dark | Down | 21.1 | 117.1 | Low | 10:30:39 - 10:49:10 | 6433 |
| Greenville | 10:39:55 | -45.2 | Dark | Down | 21.1 | 117.0 | Low | 10:30:40 - 10:49:11 | 6430 |
| Reno | 10:39:56 | -44.6 | Dark | Down | 22.1 | 117.7 | Low | 10:30:41 - 10:49:12 | 6424 |
| Portola | 10:39:56 | -45.0 | Dark | Down | 21.5 | 117.3 | Low | 10:30:41 - 10:49:12 | 6420 |
| Quincy | 10:39:57 | -45.3 | Dark | Down | 21.2 | 116.9 | Low | 10:30:41 - 10:49:12 | 6411 |
| Tonopah | 10:40:03 | -43.1 | Dark | Down | 24.6 | 119.2 | Low | 10:30:48 - 10:49:19 | 6409 |
| Yerington | 10:40:00 | -44.3 | Dark | Down | 22.8 | 118.0 | Low | 10:30:44 - 10:49:15 | 6403 |
| Carson City | 10:39:59 | -44.7 | Dark | Down | 22.3 | 117.6 | Low | 10:30:43 - 10:49:14 | 6392 |
| Hawthorne | 10:40:02 | -44.0 | Dark | Down | 23.4 | 118.3 | Low | 10:30:47 - 10:49:18 | 6384 |
| Gardnerville | 10:39:58 | -44.7 | Dark | Down | 22.4 | 117.5 | Low | 10:30:42 - 10:49:13 | 6371 |
| Indian Springs | 10:40:11 | -42.2 | Dark | Down | 26.4 | 119.8 | Low | 10:30:56 - 10:49:27 | 6352 |
| Patrick | 10:40:19 | -41.0 | Dark | Down | 28.3 | 120.8 | Low | 10:31:03 - 10:49:34 | 6344 |
| Henderson | 10:40:15 | -41.8 | Dark | Down | 27.2 | 120.2 | Low | 10:31:00 - 10:49:31 | 6340 |
| Beatty | 10:40:12 | -43.0 | Dark | Down | 25.5 | 119.1 | Low | 10:30:56 - 10:49:27 | 6327 |
| Kingman/Dolan Springs | 10:40:19 | -41.2 | Dark | Down | 28.3 | 120.5 | Low | 10:31:03 - 10:49:34 | 6315 |
| Lee Vining | 10:40:01 | -44.6 | Dark | Down | 23.3 | 117.7 | Low | 10:30:46 - 10:49:17 | 6310 |
| George/Scottsdale | 10:40:28 | -39.6 | Dark | Down | 30.6 | 121.6 | Up | 10:31:13 - 10:49:44 | 6309 |
| Bishop | 10:40:04 | -44.2 | Dark | Down | 24.1 | 118.0 | Low | 10:30:49 - 10:49:20 | 6289 |
| Laughlin/Bullhead City | 10:40:18 | -41.6 | Dark | Down | 27.9 | 120.1 | Low | 10:31:02 - 10:49:33 | 6285 |
| Mohave Valley | 10:40:21 | -41.7 | Dark | Down | 28.1 | 120.0 | Low | 10:31:05 - 10:49:36 | 6262 |
| Lake Havasu City | 10:40:23 | -41.5 | Dark | Down | 28.5 | 120.0 | Low | 10:31:08 - 10:49:39 | 6240 |
| Parker | 10:40:24 | -41.6 | Dark | Down | 28.7 | 119.9 | Low | 10:31:09 - 10:49:40 | 6211 |
| Blythe | 10:40:24 | -41.9 | Dark | Down | 28.7 | 119.4 | Low | 10:31:08 - 10:49:39 | 6150 |
| Yuma | 10:40:28 | -42.1 | Dark | Down | 29.1 | 118.9 | Low | 10:31:12 - 10:49:43 | 6068 |
| Calipatria | 10:40:24 | -42.8 | Dark | Down | 28.3 | 118.4 | Low | 10:31:08 - 10:49:39 | 6057 |
| Idyllwild | 10:40:19 | -43.6 | Dark | Down | 27.1 | 117.8 | Low | 10:31:04 - 10:49:35 | 6048 |
| CPSLO | 10:40:10 | -46.5 | Dark | Down | 23.5 | 115.5 | Low | 10:30:55 - 10:49:26 | 5995 |
| Wildwood | 10:40:15 | -45.1 | Dark | Down | 25.5 | 116.5 | Low | 10:30:59 - 10:49:30 | 5985 |
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 523773, (2021/11/04 10:47UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 21.30 66 Alphard 09:27:35.2 -08:39:30 2.0 4.10 71 23 Hya 09:16:41.8 -06:21:11 5.2 1.12 74 PPM 192228 09:17:43.4 -05:34:09 8.5 0.30 74 PPM 192230 09:17:51.0 -05:28:23 9.4 0.20 74 523773 09:18:10.4 -05:17:35 13.0 74 Positions are for J2000
Event circumstances last updated at 2021/10/11 01:42:15 UT
Marc W. Buie, Southwest Research Institute