Event between (523704) 14HB200 and star GA0700:05648615 with event index number of 1099650
Geocentric closest approach at 2021/05/07 04:45:17 UTC
J2000 position of star is 15:07:47.7 -19:16:46
Equinox of date position of star is 15:08:59.8 -19:21:34
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 126 degrees from the moon.
Moon is 18% illuminated.
TNO apparent brightness V=22.3
[RECON map]
TNO is 29.9 AU from the Sun
and 28.9 AU from the Earth.
The TNO is moving 23.5
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 79 seconds.
The 1-sigma cross-track error in the shadow position is
1314 km.
The sky-plane scale is
20965.4 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=186.2 km assuming a 5% albedo -- 7.9 sec chord
Diameter=76.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
Star training set for 523704, (2021/05/07 04:45UT) Object RA Dec mag sep mel Antares 16:30:43.2 -26:28:39 0.9 20.08 106 27Bet Lib 15:18:09.5 -09:27:37 2.6 10.14 127 21Nu Lib 15:07:49.3 -16:20:18 5.2 3.04 128 PPM 229753 15:07:27.8 -19:27:33 7.9 0.38 126 PPM 229811 15:09:50.7 -19:18:24 8.8 0.20 126 523704 15:09:00.6 -19:21:37 15.4 126 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 22.8 km
RECON observability=0.2 and success probability=3.0%
| 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 | 04:48:19 | -11.5 | NT | Down | 8.2 | 134.0 | Really Low | 04:41:16 - 04:55:21 | 4264 |
| Kelowna | 04:48:19 | -11.7 | NT | Down | 8.4 | 133.9 | Really Low | 04:41:17 - 04:55:22 | 4236 |
| Peachland | 04:48:20 | -11.6 | NT | Down | 8.3 | 133.6 | Really Low | 04:41:17 - 04:55:22 | 4221 |
| Summerland | 04:48:20 | -11.8 | NT | Down | 8.5 | 133.7 | Really Low | 04:41:17 - 04:55:22 | 4214 |
| Penticton | 04:48:20 | -11.9 | NT | Down | 8.6 | 133.8 | Really Low | 04:41:18 - 04:55:23 | 4213 |
| Oliver | 04:48:21 | -12.1 | AT | Down | 8.8 | 133.7 | Really Low | 04:41:18 - 04:55:23 | 4190 |
| Anarchist Mountain Observatory | 04:48:21 | -12.3 | AT | Down | 9.0 | 133.9 | Really Low | 04:41:18 - 04:55:23 | 4185 |
| Tonasket | 04:48:21 | -12.5 | AT | Down | 9.2 | 133.8 | Really Low | 04:41:19 - 04:55:24 | 4163 |
| Okanogan | 04:48:22 | -12.7 | AT | Down | 9.4 | 133.6 | Really Low | 04:41:20 - 04:55:25 | 4137 |
| Brewster | 04:48:23 | -12.8 | AT | Down | 9.5 | 133.4 | Really Low | 04:41:21 - 04:55:26 | 4114 |
| Manson/Chelan | 04:48:24 | -12.8 | AT | Down | 9.4 | 133.1 | Really Low | 04:41:22 - 04:55:27 | 4089 |
| Wenatchee | 04:48:26 | -13.0 | AT | Down | 9.7 | 132.9 | Really Low | 04:41:23 - 04:55:28 | 4053 |
| Dunrhomin | 04:47:54 | -25.4 | Dark | Down | 22.2 | 144.3 | Low | 04:40:51 - 04:54:56 | 4045 |
| Victoria | 04:48:29 | -10.7 | NT | Down | 7.4 | 130.5 | Really Low | 04:41:26 - 04:55:31 | 4036 |
| Ellensburg | 04:48:27 | -13.2 | AT | Down | 9.9 | 132.7 | Really Low | 04:41:24 - 04:55:29 | 4019 |
| Pasco | 04:48:26 | -14.4 | AT | Down | 11.1 | 133.7 | Really Low | 04:41:24 - 04:55:29 | 4011 |
| PNWRO | 04:48:26 | -14.7 | AT | Down | 11.4 | 133.9 | Really Low | 04:41:23 - 04:55:28 | 4002 |
| Yakima | 04:48:28 | -13.5 | AT | Down | 10.1 | 132.6 | Really Low | 04:41:26 - 04:55:31 | 3991 |
| Toppenish/White Swan | 04:48:29 | -13.7 | AT | Down | 10.4 | 132.7 | Really Low | 04:41:26 - 04:55:31 | 3981 |
| Goldendale | 04:48:30 | -13.9 | AT | Down | 10.5 | 132.3 | Really Low | 04:41:28 - 04:55:33 | 3931 |
| The Dalles | 04:48:31 | -13.8 | AT | Down | 10.5 | 132.0 | Really Low | 04:41:29 - 04:55:34 | 3904 |
| Maupin | 04:48:32 | -14.2 | AT | Down | 10.8 | 132.0 | Really Low | 04:41:30 - 04:55:35 | 3878 |
| Redmond | 04:48:34 | -14.7 | AT | Down | 11.4 | 131.8 | Really Low | 04:41:31 - 04:55:36 | 3812 |
| Sisters | 04:48:35 | -14.5 | AT | Down | 11.2 | 131.5 | Really Low | 04:41:32 - 04:55:37 | 3801 |
| Bend | 04:48:34 | -14.8 | AT | Down | 11.5 | 131.7 | Really Low | 04:41:32 - 04:55:37 | 3793 |
| Oregon Observatory | 04:48:35 | -14.9 | AT | Down | 11.5 | 131.5 | Really Low | 04:41:32 - 04:55:37 | 3776 |
| La Pine/Gilchrist | 04:48:35 | -15.0 | AT | Down | 11.6 | 131.5 | Really Low | 04:41:33 - 04:55:38 | 3760 |
| North Lake | 04:48:35 | -15.6 | AT | Down | 12.2 | 131.9 | Really Low | 04:41:32 - 04:55:37 | 3748 |
| Paisley | 04:48:36 | -16.2 | AT | Down | 12.8 | 132.1 | Really Low | 04:41:33 - 04:55:38 | 3719 |
| Lakeview | 04:48:36 | -16.6 | AT | Down | 13.2 | 132.1 | Really Low | 04:41:33 - 04:55:38 | 3689 |
| Chiloquin | 04:48:38 | -15.5 | AT | Down | 12.1 | 131.0 | Really Low | 04:41:36 - 04:55:41 | 3668 |
| Cedarville | 04:48:37 | -17.1 | AT | Down | 13.8 | 132.2 | Really Low | 04:41:34 - 04:55:39 | 3646 |
| Klamath Falls | 04:48:38 | -15.8 | AT | Down | 12.4 | 131.0 | Really Low | 04:41:36 - 04:55:41 | 3645 |
| Fall River/Burney | 04:48:40 | -16.8 | AT | Down | 13.4 | 131.1 | Really Low | 04:41:38 - 04:55:43 | 3570 |
| Susanville | 04:48:40 | -17.6 | AT | Down | 14.3 | 131.6 | Really Low | 04:41:38 - 04:55:43 | 3547 |
| Gimple | 04:48:41 | -17.7 | AT | Down | 14.3 | 131.4 | Really Low | 04:41:39 - 04:55:44 | 3519 |
| Greenville | 04:48:40 | -17.7 | AT | Down | 14.3 | 131.3 | Really Low | 04:41:38 - 04:55:43 | 3516 |
| Reno | 04:48:39 | -18.7 | Dark | Down | 15.3 | 132.1 | Really Low | 04:41:37 - 04:55:42 | 3509 |
| Portola | 04:48:40 | -18.1 | Dark | Down | 14.8 | 131.6 | Really Low | 04:41:38 - 04:55:43 | 3508 |
| Quincy | 04:48:41 | -17.8 | AT | Down | 14.4 | 131.3 | Really Low | 04:41:38 - 04:55:43 | 3501 |
| Yerington | 04:48:40 | -19.4 | Dark | Down | 16.1 | 132.5 | Really Low | 04:41:37 - 04:55:42 | 3489 |
| Tonopah | 04:48:36 | -21.2 | Dark | Down | 17.8 | 133.8 | Really Low | 04:41:34 - 04:55:39 | 3484 |
| Carson City | 04:48:40 | -19.0 | Dark | Down | 15.6 | 132.0 | Really Low | 04:41:38 - 04:55:43 | 3483 |
| Hawthorne | 04:48:38 | -20.1 | Dark | Down | 16.7 | 132.8 | Really Low | 04:41:36 - 04:55:41 | 3472 |
| Gardnerville | 04:48:40 | -19.1 | Dark | Down | 15.8 | 132.0 | Really Low | 04:41:38 - 04:55:43 | 3465 |
| Indian Springs | 04:48:35 | -23.1 | Dark | Down | 19.7 | 134.6 | Really Low | 04:41:32 - 04:55:37 | 3422 |
| Lee Vining | 04:48:40 | -20.2 | Dark | Down | 16.8 | 132.3 | Really Low | 04:41:38 - 04:55:43 | 3412 |
| Beatty | 04:48:36 | -22.2 | Dark | Down | 18.9 | 133.9 | Really Low | 04:41:34 - 04:55:39 | 3410 |
| Henderson | 04:48:34 | -23.9 | Dark | Down | 20.5 | 135.0 | Low | 04:41:31 - 04:55:36 | 3405 |
| Patrick | 04:48:32 | -24.9 | Dark | Down | 21.6 | 135.8 | Low | 04:41:29 - 04:55:34 | 3395 |
| Bishop | 04:48:39 | -21.0 | Dark | Down | 17.6 | 132.7 | Really Low | 04:41:37 - 04:55:42 | 3390 |
| Kingman/Dolan Springs | 04:48:32 | -25.0 | Dark | Down | 21.6 | 135.5 | Low | 04:41:29 - 04:55:34 | 3371 |
| Laughlin/Bullhead City | 04:48:34 | -24.7 | Dark | Down | 21.3 | 135.1 | Low | 04:41:31 - 04:55:36 | 3351 |
| George/Scottsdale | 04:48:28 | -27.3 | Dark | Down | 23.9 | 136.9 | Low | 04:41:26 - 04:55:31 | 3332 |
| Mohave Valley | 04:48:34 | -24.9 | Dark | Down | 21.5 | 135.1 | Low | 04:41:31 - 04:55:36 | 3329 |
| Lake Havasu City | 04:48:33 | -25.3 | Dark | Down | 22.0 | 135.1 | Low | 04:41:31 - 04:55:36 | 3306 |
| Parker | 04:48:34 | -25.6 | Dark | Down | 22.2 | 135.1 | Low | 04:41:32 - 04:55:37 | 3279 |
| Blythe | 04:48:36 | -25.8 | Dark | Down | 22.4 | 134.7 | Low | 04:41:33 - 04:55:38 | 3227 |
| Idyllwild | 04:48:40 | -24.5 | Dark | Down | 21.1 | 133.1 | Low | 04:41:38 - 04:55:43 | 3161 |
| Calipatria | 04:48:39 | -25.6 | Dark | Down | 22.2 | 133.8 | Low | 04:41:36 - 04:55:41 | 3153 |
| Yuma | 04:48:36 | -26.4 | Dark | Down | 23.0 | 134.4 | Low | 04:41:34 - 04:55:39 | 3150 |
| CPSLO | 04:48:48 | -21.0 | Dark | Down | 17.6 | 130.5 | Really Low | 04:41:45 - 04:55:50 | 3146 |
| Wildwood | 04:48:44 | -23.1 | Dark | Down | 19.7 | 131.7 | Really Low | 04:41:42 - 04:55:47 | 3122 |
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 523704, (2021/05/07 04:45UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.08 106 27Bet Lib 15:17:00.3 -09:22:59 2.6 10.14 127 21Nu Lib 15:06:37.6 -16:15:25 5.2 3.04 128 PPM 229753 15:06:14.8 -19:22:40 7.9 0.38 126 PPM 229811 15:08:37.7 -19:13:34 8.8 0.20 126 523704 15:07:47.7 -19:16:46 15.4 126 Positions are for J2000
Event circumstances last updated at 2021/02/06 20:57:34 UT
Marc W. Buie, Southwest Research Institute