Event between (523711) 14JH80 and star GA0860:16553667 with event index number of 1099317
Geocentric closest approach at 2021/08/07 06:58:30 UTC
J2000 position of star is 21:07:11.1 -02:33:37
Equinox of date position of star is 21:08:16.7 -02:28:29
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon.
Moon is 2% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 34.1 AU from the Sun
and 33.1 AU from the Earth.
The TNO is moving 25.8
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 65 seconds.
The 1-sigma cross-track error in the shadow position is
2590 km.
The sky-plane scale is
23984.0 km/arcsec.
The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 9.7 sec chord
Diameter=102.6 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is SCATEXTD
Star training set for 523711, (2021/08/07 06:58UT) Object RA Dec mag sep mel Fomalhaut 22:58:50.4 -29:30:26 1.2 37.67 143 Tarazed 19:47:17.2 +10:40:02 2.7 24.06 145 11 Aqr 21:01:42.0 -04:38:44 6.2 2.73 157 PPM 204841 21:08:49.7 -01:57:51 6.8 0.52 154 PPM 204825 21:07:59.7 -02:40:31 9.1 0.22 155 523711 21:08:18.3 -02:28:21 16.9 154 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 20.0 km
RECON observability=1.0 and success probability=14.2%
| 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 | 06:58:46 | -21.9 | Dark | Down | 35.6 | 161.0 | Up | 06:52:53 - 07:04:40 | -612 |
| Kelowna | 06:58:47 | -22.3 | Dark | Down | 35.9 | 160.7 | Up | 06:52:53 - 07:04:40 | -636 |
| Peachland | 06:58:48 | -22.3 | Dark | Down | 35.9 | 160.3 | Up | 06:52:54 - 07:04:41 | -640 |
| Summerland | 06:58:48 | -22.5 | Dark | Down | 36.1 | 160.4 | Up | 06:52:54 - 07:04:41 | -651 |
| Penticton | 06:58:48 | -22.6 | Dark | Down | 36.2 | 160.5 | Up | 06:52:54 - 07:04:41 | -656 |
| Oliver | 06:58:48 | -22.9 | Dark | Down | 36.5 | 160.4 | Up | 06:52:55 - 07:04:42 | -679 |
| Anarchist Mountain Observatory | 06:58:48 | -23.1 | Dark | Down | 36.7 | 160.6 | Up | 06:52:54 - 07:04:41 | -691 |
| Victoria | 06:58:59 | -22.7 | Dark | Down | 36.2 | 155.7 | Up | 06:53:05 - 07:04:52 | -691 |
| Tonasket | 06:58:48 | -23.4 | Dark | Down | 37.0 | 160.5 | Up | 06:52:55 - 07:04:42 | -712 |
| Okanogan | 06:58:49 | -23.7 | Dark | Down | 37.3 | 160.2 | Up | 06:52:56 - 07:04:43 | -733 |
| Brewster | 06:58:50 | -23.9 | Dark | Down | 37.5 | 159.9 | Up | 06:52:57 - 07:04:44 | -749 |
| Manson/Chelan | 06:58:51 | -24.0 | Dark | Down | 37.6 | 159.4 | Up | 06:52:58 - 07:04:45 | -760 |
| Wenatchee | 06:58:52 | -24.4 | Dark | Down | 38.0 | 159.1 | Up | 06:52:59 - 07:04:46 | -791 |
| Ellensburg | 06:58:53 | -24.8 | Dark | Down | 38.3 | 158.7 | Up | 06:53:00 - 07:04:47 | -817 |
| Yakima | 06:58:54 | -25.2 | Dark | Down | 38.7 | 158.5 | Up | 06:53:01 - 07:04:48 | -846 |
| Toppenish/White Swan | 06:58:54 | -25.4 | Dark | Down | 39.0 | 158.7 | Up | 06:53:00 - 07:04:47 | -862 |
| Pasco | 06:58:50 | -25.8 | Dark | Down | 39.4 | 160.2 | Up | 06:52:57 - 07:04:44 | -882 |
| Goldendale | 06:58:55 | -25.9 | Dark | Down | 39.4 | 158.0 | Up | 06:53:02 - 07:04:49 | -897 |
| PNWRO | 06:58:50 | -26.1 | Dark | Down | 39.7 | 160.4 | Up | 06:52:57 - 07:04:44 | -901 |
| The Dalles | 06:58:57 | -26.0 | Dark | Down | 39.5 | 157.5 | Up | 06:53:04 - 07:04:51 | -910 |
| Maupin | 06:58:57 | -26.4 | Dark | Down | 39.9 | 157.5 | Up | 06:53:04 - 07:04:51 | -940 |
| Sisters | 06:59:00 | -27.1 | Dark | Down | 40.6 | 156.6 | Up | 06:53:06 - 07:04:53 | -999 |
| Redmond | 06:58:59 | -27.2 | Dark | Down | 40.7 | 157.1 | Up | 06:53:05 - 07:04:52 | -1004 |
| Bend | 06:58:59 | -27.4 | Dark | Down | 40.9 | 156.8 | Up | 06:53:06 - 07:04:53 | -1019 |
| Oregon Observatory | 06:59:00 | -27.5 | Dark | Down | 41.0 | 156.6 | Up | 06:53:06 - 07:04:53 | -1030 |
| La Pine/Gilchrist | 06:59:00 | -27.7 | Dark | Down | 41.2 | 156.5 | Up | 06:53:07 - 07:04:54 | -1044 |
| North Lake | 06:58:59 | -28.3 | Dark | Down | 41.7 | 157.1 | Up | 06:53:05 - 07:04:52 | -1082 |
| Paisley | 06:58:59 | -28.9 | Dark | Down | 42.3 | 157.3 | Up | 06:53:05 - 07:04:52 | -1126 |
| Klamath Falls | 06:59:03 | -29.0 | Dark | Down | 42.4 | 155.6 | Up | 06:53:09 - 07:04:56 | -1150 |
| Lakeview | 06:58:59 | -29.4 | Dark | Down | 42.9 | 157.4 | Up | 06:53:05 - 07:04:52 | -1166 |
| Cedarville | 06:58:59 | -30.1 | Dark | Down | 43.5 | 157.4 | Up | 06:53:06 - 07:04:53 | -1218 |
| Fall River/Burney | 06:59:03 | -30.2 | Dark | Down | 43.6 | 155.6 | Up | 06:53:10 - 07:04:57 | -1244 |
| Susanville | 06:59:02 | -31.0 | Dark | Down | 44.4 | 156.4 | Up | 06:53:08 - 07:04:55 | -1300 |
| Greenville | 06:59:03 | -31.2 | Dark | Down | 44.6 | 155.9 | Up | 06:53:09 - 07:04:56 | -1319 |
| Gimple | 06:59:03 | -31.2 | Dark | Down | 44.6 | 156.0 | Up | 06:53:09 - 07:04:56 | -1320 |
| Quincy | 06:59:03 | -31.4 | Dark | Down | 44.8 | 155.8 | Up | 06:53:10 - 07:04:57 | -1335 |
| Portola | 06:59:02 | -31.6 | Dark | Down | 45.0 | 156.4 | Up | 06:53:08 - 07:04:55 | -1349 |
| Reno | 06:59:00 | -32.0 | Dark | Down | 45.5 | 157.1 | Up | 06:53:07 - 07:04:54 | -1376 |
| Carson City | 06:59:00 | -32.4 | Dark | Down | 45.8 | 157.0 | Up | 06:53:07 - 07:04:54 | -1405 |
| Gardnerville | 06:59:01 | -32.6 | Dark | Down | 46.0 | 157.0 | Up | 06:53:07 - 07:04:54 | -1425 |
| Yerington | 06:58:59 | -32.7 | Dark | Down | 46.2 | 157.8 | Up | 06:53:05 - 07:04:52 | -1427 |
| Hawthorne | 06:58:57 | -33.3 | Dark | Down | 46.7 | 158.3 | Up | 06:53:04 - 07:04:51 | -1469 |
| Dunrhomin | 06:58:13 | -33.4 | Dark | Down | 47.2 | 178.0 | Up | 06:52:19 - 07:04:06 | -1471 |
| Lee Vining | 06:59:00 | -33.7 | Dark | Down | 47.1 | 157.4 | Up | 06:53:06 - 07:04:53 | -1510 |
| Tonopah | 06:58:54 | -34.1 | Dark | Down | 47.6 | 160.1 | Up | 06:53:00 - 07:04:47 | -1521 |
| Bishop | 06:58:58 | -34.5 | Dark | Down | 47.9 | 158.2 | Up | 06:53:05 - 07:04:52 | -1567 |
| Beatty | 06:58:53 | -35.3 | Dark | Down | 48.8 | 160.4 | Up | 06:53:00 - 07:04:47 | -1622 |
| Indian Springs | 06:58:50 | -35.8 | Dark | Down | 49.4 | 161.8 | Up | 06:52:56 - 07:04:43 | -1661 |
| Henderson | 06:58:48 | -36.5 | Dark | Down | 50.0 | 162.7 | Up | 06:52:55 - 07:04:42 | -1713 |
| CPSLO | 06:59:08 | -35.8 | Dark | Down | 49.0 | 154.1 | Up | 06:53:14 - 07:05:01 | -1717 |
| Patrick | 06:58:45 | -37.3 | Dark | Down | 50.9 | 164.1 | Up | 06:52:52 - 07:04:39 | -1778 |
| Laughlin/Bullhead City | 06:58:48 | -37.4 | Dark | Down | 51.0 | 163.0 | Up | 06:52:54 - 07:04:41 | -1792 |
| Kingman/Dolan Springs | 06:58:46 | -37.5 | Dark | Down | 51.1 | 163.8 | Up | 06:52:52 - 07:04:39 | -1795 |
| Mohave Valley | 06:58:48 | -37.7 | Dark | Down | 51.2 | 162.9 | Up | 06:52:54 - 07:04:41 | -1815 |
| Wildwood | 06:59:02 | -37.5 | Dark | Down | 50.9 | 156.5 | Up | 06:53:09 - 07:04:56 | -1841 |
| Lake Havasu City | 06:58:47 | -38.1 | Dark | Down | 51.7 | 163.1 | Up | 06:52:54 - 07:04:41 | -1853 |
| Parker | 06:58:47 | -38.4 | Dark | Down | 52.0 | 163.0 | Up | 06:52:54 - 07:04:41 | -1884 |
| Idyllwild | 06:58:56 | -38.3 | Dark | Down | 51.8 | 159.1 | Up | 06:53:03 - 07:04:50 | -1892 |
| Blythe | 06:58:49 | -38.9 | Dark | Down | 52.5 | 162.4 | Up | 06:52:56 - 07:04:43 | -1926 |
| George/Scottsdale | 06:58:39 | -39.3 | Dark | Down | 53.0 | 166.7 | Up | 06:52:46 - 07:04:33 | -1948 |
| Calipatria | 06:58:53 | -39.2 | Dark | Down | 52.7 | 160.7 | Up | 06:52:59 - 07:04:46 | -1959 |
| Yuma | 06:58:50 | -39.8 | Dark | Down | 53.3 | 161.9 | Up | 06:52:57 - 07:04:44 | -2007 |
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 523711, (2021/08/07 06:58UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 37.67 143 Tarazed 19:46:15.6 +10:36:48 2.7 24.06 145 11 Aqr 21:00:33.9 -04:43:52 6.2 2.73 157 PPM 204841 21:07:42.6 -02:03:08 6.8 0.52 154 PPM 204825 21:06:52.3 -02:45:47 9.1 0.22 155 523711 21:07:11.1 -02:33:37 16.9 155 Positions are for J2000
Event circumstances last updated at 2021/01/24 20:54:02 UT
Marc W. Buie, Southwest Research Institute