Event between (523701) 14HT199 and star GA0660:08908906 with event index number of 2334027
Geocentric closest approach at 2027/05/15 08:53:04 UTC
J2000 position of star is 17:00:58.1 -23:20:26
Equinox of date position of star is 17:02:18.3 -23:22:18
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 84 degrees from the moon.
Moon is 73% illuminated.
TNO apparent brightness V=22.1
[RECON map]
TNO is 29.9 AU from the Sun
and 29.0 AU from the Earth.
The TNO is moving 21.3
km/sec on the sky relative to the star, or,
3.6 arcsec/hr.
The 1-sigma error in the time of the event is 238 seconds.
The 1-sigma cross-track error in the shadow position is
2148 km.
The sky-plane scale is
21005.5 km/arcsec.
The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 9.6 sec chord
Diameter=83.4 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E
Star training set for 523701, (2027/05/15 08:53UT) Object RA Dec mag sep mel Antares 16:31:05.4 -26:29:25 0.9 7.79 77 23Tau Sco 16:37:35.5 -28:16:13 2.8 7.46 79 26 Oph 17:01:50.3 -25:01:42 5.8 1.66 84 PPM 266304 17:03:48.2 -23:19:33 8.4 0.28 84 PPM 266274 17:02:46.3 -23:31:14 9.4 0.15 84 523701 17:02:37.6 -23:22:44 16.5 85 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
3.8 sigma about the mid-time.
The median site spacing is 15.9 km
RECON observability=0.7 and success probability=2.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 08:52:56 | -14.9 | AT | Up | 14.5 | 184.7 | Really Low | 08:37:56 - 09:07:56 | 5660 |
| Kamloops | 08:53:43 | -19.4 | Dark | Up | 15.5 | 171.1 | Really Low | 08:38:43 - 09:08:43 | 5579 |
| Kelowna | 08:53:40 | -20.0 | Dark | Up | 16.4 | 171.9 | Really Low | 08:38:40 - 09:08:40 | 5558 |
| Peachland | 08:53:41 | -20.2 | Dark | Up | 16.5 | 171.7 | Really Low | 08:38:41 - 09:08:41 | 5553 |
| Summerland | 08:53:41 | -20.3 | Dark | Up | 16.7 | 171.7 | Really Low | 08:38:41 - 09:08:41 | 5548 |
| Penticton | 08:53:40 | -20.4 | Dark | Up | 16.7 | 171.8 | Really Low | 08:38:40 - 09:08:40 | 5547 |
| Oliver | 08:53:41 | -20.7 | Dark | Up | 17.1 | 171.8 | Really Low | 08:38:41 - 09:08:41 | 5535 |
| Anarchist Mountain Observatory | 08:53:40 | -20.8 | Dark | Up | 17.3 | 172.0 | Really Low | 08:38:40 - 09:08:40 | 5531 |
| Tonasket | 08:53:40 | -21.2 | Dark | Up | 17.6 | 171.9 | Really Low | 08:38:40 - 09:08:40 | 5519 |
| Okanogan | 08:53:42 | -21.5 | Dark | Up | 17.9 | 171.8 | Really Low | 08:38:42 - 09:08:42 | 5506 |
| Brewster | 08:53:43 | -21.8 | Dark | Up | 18.1 | 171.6 | Really Low | 08:38:43 - 09:08:43 | 5495 |
| Manson/Chelan | 08:53:44 | -22.1 | Dark | Up | 18.3 | 171.2 | Really Low | 08:38:44 - 09:08:44 | 5485 |
| Victoria | 08:53:54 | -21.9 | Dark | Up | 17.3 | 168.2 | Really Low | 08:38:54 - 09:08:54 | 5485 |
| Wenatchee | 08:53:45 | -22.6 | Dark | Up | 18.8 | 171.0 | Really Low | 08:38:45 - 09:08:45 | 5467 |
| Ellensburg | 08:53:45 | -23.0 | Dark | Up | 19.1 | 170.8 | Really Low | 08:38:45 - 09:08:45 | 5450 |
| Yakima | 08:53:46 | -23.4 | Dark | Up | 19.5 | 170.7 | Really Low | 08:38:46 - 09:08:46 | 5434 |
| Toppenish/White Swan | 08:53:45 | -23.6 | Dark | Up | 19.8 | 170.9 | Really Low | 08:38:45 - 09:08:45 | 5427 |
| PNWRO | 08:53:41 | -23.7 | Dark | Up | 20.3 | 172.3 | Low | 08:38:41 - 09:08:41 | 5422 |
| Goldendale | 08:53:47 | -24.2 | Dark | Up | 20.3 | 170.5 | Low | 08:38:47 - 09:08:47 | 5402 |
| The Dalles | 08:53:49 | -24.5 | Dark | Up | 20.5 | 170.1 | Low | 08:38:49 - 09:08:49 | 5390 |
| Maupin | 08:53:49 | -24.8 | Dark | Up | 20.9 | 170.2 | Low | 08:38:49 - 09:08:49 | 5374 |
| Sisters | 08:53:51 | -25.8 | Dark | Up | 21.7 | 169.6 | Low | 08:38:51 - 09:08:51 | 5333 |
| Bend | 08:53:50 | -26.0 | Dark | Up | 22.0 | 169.9 | Low | 08:38:50 - 09:08:50 | 5325 |
| Oregon Observatory | 08:53:51 | -26.2 | Dark | Up | 22.1 | 169.7 | Low | 08:38:51 - 09:08:51 | 5317 |
| North Lake | 08:53:49 | -26.7 | Dark | Up | 22.8 | 170.2 | Low | 08:38:49 - 09:08:49 | 5293 |
| Chiloquin | 08:53:53 | -27.5 | Dark | Up | 23.3 | 169.2 | Low | 08:38:53 - 09:08:53 | 5254 |
| Lakeview | 08:53:48 | -27.6 | Dark | Up | 23.9 | 170.7 | Low | 08:38:48 - 09:08:48 | 5248 |
| Klamath Falls | 08:53:53 | -27.8 | Dark | Up | 23.7 | 169.3 | Low | 08:38:53 - 09:08:53 | 5239 |
| Cedarville | 08:53:47 | -28.2 | Dark | Up | 24.6 | 170.8 | Low | 08:38:47 - 09:08:47 | 5219 |
| Dunrhomin | 08:52:49 | -25.0 | Dark | Up | 26.2 | 185.8 | Low | 08:37:49 - 09:07:49 | 5202 |
| Fall River/Burney | 08:53:52 | -28.9 | Dark | Up | 24.9 | 169.6 | Low | 08:38:52 - 09:08:52 | 5186 |
| Susanville | 08:53:50 | -29.4 | Dark | Up | 25.6 | 170.2 | Low | 08:38:50 - 09:08:50 | 5161 |
| Gimple | 08:53:51 | -29.7 | Dark | Up | 25.9 | 170.0 | Low | 08:38:51 - 09:08:51 | 5145 |
| Greenville | 08:53:51 | -29.7 | Dark | Up | 25.9 | 169.9 | Low | 08:38:51 - 09:08:51 | 5144 |
| Quincy | 08:53:51 | -29.9 | Dark | Up | 26.1 | 169.9 | Low | 08:38:51 - 09:08:51 | 5134 |
| Portola | 08:53:50 | -29.9 | Dark | Up | 26.2 | 170.4 | Low | 08:38:50 - 09:08:50 | 5132 |
| Reno | 08:53:47 | -30.0 | Dark | Up | 26.6 | 171.0 | Low | 08:38:47 - 09:08:47 | 5123 |
| Carson City | 08:53:47 | -30.4 | Dark | Up | 26.9 | 171.0 | Low | 08:38:47 - 09:08:47 | 5105 |
| Yerington | 08:53:44 | -30.4 | Dark | Up | 27.2 | 171.6 | Low | 08:38:44 - 09:08:44 | 5099 |
| Gardnerville | 08:53:47 | -30.6 | Dark | Up | 27.2 | 171.0 | Low | 08:38:47 - 09:08:47 | 5092 |
| Hawthorne | 08:53:43 | -30.8 | Dark | Up | 27.7 | 172.1 | Low | 08:38:43 - 09:08:43 | 5078 |
| Tonopah | 08:53:37 | -30.9 | Dark | Up | 28.3 | 173.5 | Low | 08:38:37 - 09:08:37 | 5063 |
| Lee Vining | 08:53:45 | -31.4 | Dark | Up | 28.2 | 171.6 | Low | 08:38:45 - 09:08:45 | 5045 |
| Bishop | 08:53:42 | -31.8 | Dark | Up | 28.9 | 172.3 | Low | 08:38:42 - 09:08:42 | 5017 |
| Beatty | 08:53:36 | -31.8 | Dark | Up | 29.5 | 173.9 | Low | 08:38:36 - 09:08:36 | 5002 |
| Indian Springs | 08:53:31 | -31.9 | Dark | Up | 29.9 | 175.0 | Low | 08:38:31 - 09:08:31 | 4989 |
| Henderson | 08:53:29 | -32.2 | Dark | Up | 30.5 | 175.7 | Up | 08:38:29 - 09:08:29 | 4962 |
| Patrick | 08:53:24 | -32.4 | Dark | Up | 31.2 | 176.9 | Up | 08:38:24 - 09:08:24 | 4931 |
| Kingman/Dolan Springs | 08:53:25 | -32.7 | Dark | Up | 31.4 | 176.7 | Up | 08:38:25 - 09:08:25 | 4918 |
| Laughlin/Bullhead City | 08:53:27 | -32.8 | Dark | Up | 31.4 | 176.1 | Up | 08:38:27 - 09:08:27 | 4914 |
| Mohave Valley | 08:53:27 | -33.1 | Dark | Up | 31.7 | 176.1 | Up | 08:38:27 - 09:08:27 | 4898 |
| Lake Havasu City | 08:53:26 | -33.4 | Dark | Up | 32.1 | 176.4 | Up | 08:38:26 - 09:08:26 | 4875 |
| Parker | 08:53:26 | -33.7 | Dark | Up | 32.4 | 176.4 | Up | 08:38:26 - 09:08:26 | 4854 |
| George/Scottsdale | 08:53:15 | -33.3 | Dark | Up | 32.9 | 179.0 | Up | 08:38:15 - 09:08:15 | 4838 |
| Wildwood | 08:53:44 | -35.0 | Dark | Up | 32.1 | 171.8 | Up | 08:38:44 - 09:08:44 | 4828 |
| Idyllwild | 08:53:36 | -34.8 | Dark | Up | 32.7 | 173.8 | Up | 08:38:36 - 09:08:36 | 4819 |
| Calipatria | 08:53:32 | -35.0 | Dark | Up | 33.4 | 175.0 | Up | 08:38:32 - 09:08:32 | 4787 |
| Yuma | 08:53:28 | -35.1 | Dark | Up | 33.9 | 176.0 | Up | 08:38:28 - 09:08:28 | 4765 |
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, (2027/05/15 08:53UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 7.79 77 23Tau Sco 16:35:52.9 -28:12:58 2.8 7.46 79 26 Oph 17:00:09.6 -24:59:22 5.8 1.66 84 PPM 266304 17:02:08.7 -23:17:18 8.4 0.28 84 PPM 266274 17:01:06.8 -23:28:56 9.4 0.15 84 523701 17:00:58.1 -23:20:26 16.5 84 Positions are for J2000
Event circumstances last updated at 2022/01/25 00:28:01 UT
Marc W. Buie, Southwest Research Institute