Event between (523701) 14HT199 and star GA0720:05770074 with event index number of 1134334
Geocentric closest approach at 2021/07/03 08:16:33 UTC
J2000 position of star is 15:56:00.1 -17:13:51
Equinox of date position of star is 15:57:13.1 -17:17:30
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 148 degrees from the moon.
Moon is 36% illuminated.
TNO apparent brightness V=22.2
[RECON map]
TNO is 29.8 AU from the Sun
and 29.1 AU from the Earth.
The TNO is moving 16.5
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 134 seconds.
The 1-sigma cross-track error in the shadow position is
1421 km.
The sky-plane scale is
21082.0 km/arcsec.
The TNO has an absolute magnitude Hv=7.4
Diameter=203.2 km assuming a 5% albedo -- 12.3 sec chord
Diameter=83.0 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 3:2E
Star training set for 523701, (2021/07/03 08:17UT) Object RA Dec mag sep mel Antares 16:30:43.8 -26:28:40 0.9 12.02 137 8Bet1Sco 16:06:41.4 -19:51:45 2.6 3.41 145 46The Lib 15:55:03.2 -16:47:27 4.3 0.72 148 PPM 231016 15:59:11.4 -17:09:04 8.0 0.49 147 PPM 230948 15:56:41.9 -17:19:06 9.8 0.13 148 523701 15:57:13.9 -17:17:32 15.7 147 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 67.0 km
RECON observability=0.1 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) |
| Clarence Fulton | 08:13:52 | -16.8 | AT | Down | 11.0 | 225.1 | Really Low | 08:02:13 - 08:25:31 | 6891 |
| Kelowna | 08:13:52 | -17.2 | AT | Down | 11.3 | 225.0 | Really Low | 08:02:13 - 08:25:31 | 6875 |
| Peachland | 08:13:52 | -17.3 | AT | Down | 11.6 | 224.8 | Really Low | 08:02:13 - 08:25:31 | 6873 |
| Summerland | 08:13:52 | -17.4 | AT | Down | 11.6 | 224.9 | Really Low | 08:02:13 - 08:25:31 | 6865 |
| Penticton | 08:13:51 | -17.5 | AT | Down | 11.6 | 225.0 | Really Low | 08:02:12 - 08:25:30 | 6860 |
| Victoria | 08:13:59 | -18.5 | Dark | Down | 14.1 | 221.9 | Really Low | 08:02:20 - 08:25:38 | 6858 |
| Oliver | 08:13:49 | -17.8 | AT | Down | 11.9 | 225.0 | Really Low | 08:02:10 - 08:25:28 | 6843 |
| Anarchist Mountain Observatory | 08:13:49 | -18.0 | Dark | Down | 11.9 | 225.2 | Really Low | 08:02:10 - 08:25:28 | 6833 |
| Tonasket | 08:13:47 | -18.3 | Dark | Down | 12.2 | 225.2 | Really Low | 08:02:08 - 08:25:26 | 6818 |
| Okanogan | 08:13:47 | -18.7 | Dark | Down | 12.5 | 225.1 | Really Low | 08:02:08 - 08:25:26 | 6803 |
| Brewster | 08:13:46 | -18.9 | Dark | Down | 12.8 | 225.0 | Really Low | 08:02:07 - 08:25:25 | 6792 |
| Manson/Chelan | 08:13:46 | -19.2 | Dark | Down | 13.1 | 224.7 | Really Low | 08:02:07 - 08:25:25 | 6787 |
| Wenatchee | 08:13:45 | -19.6 | Dark | Down | 13.5 | 224.7 | Really Low | 08:02:06 - 08:25:24 | 6765 |
| Ellensburg | 08:13:45 | -20.1 | Dark | Down | 13.9 | 224.5 | Really Low | 08:02:06 - 08:25:24 | 6746 |
| Yakima | 08:13:43 | -20.5 | Dark | Down | 14.2 | 224.6 | Really Low | 08:02:04 - 08:25:22 | 6725 |
| Toppenish/White Swan | 08:13:42 | -20.7 | Dark | Down | 14.3 | 224.8 | Really Low | 08:02:03 - 08:25:21 | 6711 |
| Goldendale | 08:13:42 | -21.2 | Dark | Down | 14.9 | 224.5 | Really Low | 08:02:03 - 08:25:21 | 6687 |
| Pasco | 08:13:37 | -20.8 | Dark | Down | 13.7 | 225.8 | Really Low | 08:01:58 - 08:25:16 | 6687 |
| The Dalles | 08:13:42 | -21.5 | Dark | Down | 15.2 | 224.2 | Really Low | 08:02:03 - 08:25:21 | 6680 |
| PNWRO | 08:13:36 | -21.0 | Dark | Down | 13.8 | 226.1 | Really Low | 08:01:57 - 08:25:15 | 6671 |
| Maupin | 08:13:40 | -21.9 | Dark | Down | 15.5 | 224.4 | Really Low | 08:02:01 - 08:25:19 | 6656 |
| Sisters | 08:13:38 | -22.8 | Dark | Down | 16.3 | 224.2 | Really Low | 08:01:59 - 08:25:17 | 6614 |
| Redmond | 08:13:37 | -22.8 | Dark | Down | 16.2 | 224.5 | Really Low | 08:01:58 - 08:25:16 | 6607 |
| Bend | 08:13:37 | -23.0 | Dark | Down | 16.4 | 224.4 | Really Low | 08:01:58 - 08:25:16 | 6597 |
| Oregon Observatory | 08:13:37 | -23.2 | Dark | Down | 16.6 | 224.3 | Really Low | 08:01:58 - 08:25:16 | 6589 |
| La Pine/Gilchrist | 08:13:36 | -23.4 | Dark | Down | 16.8 | 224.3 | Really Low | 08:01:57 - 08:25:15 | 6578 |
| North Lake | 08:13:33 | -23.8 | Dark | Down | 16.8 | 224.9 | Really Low | 08:01:54 - 08:25:12 | 6545 |
| Chiloquin | 08:13:34 | -24.5 | Dark | Down | 17.7 | 224.3 | Really Low | 08:01:55 - 08:25:13 | 6518 |
| Paisley | 08:13:30 | -24.4 | Dark | Down | 17.0 | 225.3 | Really Low | 08:01:51 - 08:25:09 | 6507 |
| Klamath Falls | 08:13:32 | -24.8 | Dark | Down | 17.9 | 224.4 | Really Low | 08:01:53 - 08:25:11 | 6497 |
| Lakeview | 08:13:27 | -24.9 | Dark | Down | 17.2 | 225.6 | Really Low | 08:01:48 - 08:25:06 | 6475 |
| Cedarville | 08:13:24 | -25.5 | Dark | Down | 17.6 | 225.9 | Really Low | 08:01:45 - 08:25:03 | 6432 |
| Fall River/Burney | 08:13:27 | -26.0 | Dark | Down | 18.6 | 225.0 | Really Low | 08:01:48 - 08:25:06 | 6420 |
| Susanville | 08:13:23 | -26.6 | Dark | Down | 18.6 | 225.7 | Really Low | 08:01:44 - 08:25:02 | 6370 |
| Greenville | 08:13:24 | -26.9 | Dark | Down | 19.0 | 225.6 | Really Low | 08:01:45 - 08:25:03 | 6357 |
| Gimple | 08:13:22 | -26.9 | Dark | Down | 19.0 | 225.6 | Really Low | 08:01:43 - 08:25:01 | 6356 |
| Quincy | 08:13:22 | -27.1 | Dark | Down | 19.1 | 225.6 | Really Low | 08:01:43 - 08:25:01 | 6344 |
| Portola | 08:13:20 | -27.2 | Dark | Down | 19.0 | 226.0 | Really Low | 08:01:41 - 08:24:59 | 6330 |
| Reno | 08:13:17 | -27.5 | Dark | Down | 18.8 | 226.6 | Really Low | 08:01:38 - 08:24:56 | 6303 |
| Carson City | 08:13:15 | -27.8 | Dark | Down | 19.0 | 226.7 | Really Low | 08:01:36 - 08:24:54 | 6279 |
| Gardnerville | 08:13:14 | -28.1 | Dark | Down | 19.2 | 226.8 | Really Low | 08:01:35 - 08:24:53 | 6263 |
| Yerington | 08:13:13 | -28.0 | Dark | Down | 18.8 | 227.3 | Really Low | 08:01:34 - 08:24:52 | 6257 |
| Hawthorne | 08:13:09 | -28.5 | Dark | Down | 18.8 | 227.8 | Really Low | 08:01:30 - 08:24:48 | 6218 |
| Lee Vining | 08:13:09 | -29.0 | Dark | Down | 19.5 | 227.6 | Really Low | 08:01:30 - 08:24:48 | 6189 |
| Tonopah | 08:13:03 | -28.8 | Dark | Down | 18.3 | 229.0 | Really Low | 08:01:24 - 08:24:42 | 6165 |
| Bishop | 08:13:04 | -29.6 | Dark | Down | 19.5 | 228.3 | Really Low | 08:01:25 - 08:24:43 | 6137 |
| Dunrhomin | 08:12:33 | -24.9 | Dark | Up | 9.6 | 237.5 | Really Low | 08:00:54 - 08:24:12 | 6095 |
| Beatty | 08:12:57 | -30.0 | Dark | Down | 18.8 | 229.7 | Really Low | 08:01:18 - 08:24:36 | 6079 |
| Indian Springs | 08:12:52 | -30.2 | Dark | Down | 18.4 | 230.6 | Really Low | 08:01:13 - 08:24:31 | 6038 |
| CPSLO | 08:13:07 | -31.7 | Dark | Down | 22.2 | 227.1 | Low | 08:01:28 - 08:24:46 | 6030 |
| Henderson | 08:12:48 | -30.6 | Dark | Down | 18.3 | 231.2 | Really Low | 08:01:09 - 08:24:27 | 5988 |
| Patrick | 08:12:42 | -31.1 | Dark | Down | 18.0 | 232.2 | Really Low | 08:01:03 - 08:24:21 | 5924 |
| Laughlin/Bullhead City | 08:12:44 | -31.5 | Dark | Down | 18.6 | 231.7 | Really Low | 08:01:05 - 08:24:23 | 5919 |
| Kingman/Dolan Springs | 08:12:42 | -31.4 | Dark | Down | 18.2 | 232.1 | Really Low | 08:01:03 - 08:24:21 | 5912 |
| Wildwood | 08:12:55 | -32.9 | Dark | Down | 21.8 | 229.0 | Low | 08:01:16 - 08:24:34 | 5911 |
| Mohave Valley | 08:12:43 | -31.7 | Dark | Down | 18.8 | 231.8 | Really Low | 08:01:04 - 08:24:22 | 5899 |
| Lake Havasu City | 08:12:41 | -32.1 | Dark | Down | 18.8 | 232.1 | Really Low | 08:01:02 - 08:24:20 | 5866 |
| Idyllwild | 08:12:47 | -33.1 | Dark | Down | 20.9 | 230.5 | Low | 08:01:08 - 08:24:26 | 5853 |
| Parker | 08:12:40 | -32.4 | Dark | Down | 19.0 | 232.2 | Really Low | 08:01:01 - 08:24:19 | 5839 |
| Blythe | 08:12:40 | -33.0 | Dark | Down | 19.6 | 232.1 | Really Low | 08:01:01 - 08:24:19 | 5806 |
| Calipatria | 08:12:41 | -33.6 | Dark | Down | 20.5 | 231.6 | Low | 08:01:02 - 08:24:20 | 5786 |
| George/Scottsdale | 08:12:30 | -32.5 | Dark | Up | 17.7 | 234.1 | Really Low | 08:00:51 - 08:24:09 | 5763 |
| Yuma | 08:12:37 | -33.9 | Dark | Down | 20.2 | 232.4 | Low | 08:00:58 - 08:24:16 | 5738 |
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 523701, (2021/07/03 08:17UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.02 137 8Bet1Sco 16:05:26.2 -19:48:20 2.6 3.41 145 46The Lib 15:53:49.7 -16:43:43 4.3 0.72 148 PPM 231016 15:57:57.7 -17:05:26 8.0 0.49 147 PPM 230948 15:55:28.2 -17:15:24 9.8 0.13 148 523701 15:56:00.1 -17:13:51 15.7 147 Positions are for J2000
Event circumstances last updated at 2021/04/08 23:41:12 UT
Marc W. Buie, Southwest Research Institute