Event between (118378) 99HT11 and star GA0700:06141967 with event index number of 1288920
Geocentric closest approach at 2024/04/24 07:10:31 UTC
J2000 position of star is 16:03:55.7 -18:26:45
Equinox of date position of star is 16:05:19.6 -18:30:39
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 25 degrees from the moon.
Moon is 100% illuminated.
Apparent brightness V=23.3
[RECON map]
Object is 39.5 AU from the Sun
and 38.6 AU from the Earth.
Apparent velocity is 20.9
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 415 seconds.
The 1-sigma cross-track error in the shadow position is
3092 km.
The sky-plane scale is
28005.3 km/arcsec.
The object has an absolute magnitude Hv=7.3
Diameter=182.0 km assuming a 5% albedo -- 10.2 sec chord
Diameter=74.3 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 7:4EEE
Star training set for 118378, (2024/04/24 07:11UT) Object RA Dec mag sep mel Antares 16:30:54.1 -26:29:02 0.9 9.92 32 8Bet1Sco 16:06:51.3 -19:52:12 2.6 1.41 25 8Bet2Sco 16:06:51.7 -19:51:59 5.1 1.40 25 PPM 231132 16:04:42.0 -18:20:05 7.9 0.23 25 PPM 231156 16:05:57.9 -18:27:22 10.0 0.16 25 118378 16:05:19.9 -18:30:40 15.3 25 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
2.2 sigma about the mid-time.
The median site spacing is 12.4 km
RECON observability=0.5 and success probability=2.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 07:12:47 | -24.8 | Dark | Up | 15.9 | 154.5 | Really Low | 06:57:47 - 07:27:47 | 7406 |
| Kamloops | 07:13:26 | -25.5 | Dark | Up | 12.4 | 141.2 | Really Low | 06:58:26 - 07:28:26 | 6998 |
| Kelowna | 07:13:27 | -26.4 | Dark | Up | 13.4 | 141.9 | Really Low | 06:58:27 - 07:28:27 | 6974 |
| Peachland | 07:13:27 | -26.5 | Dark | Up | 13.4 | 141.6 | Really Low | 06:58:27 - 07:28:27 | 6961 |
| Summerland | 07:13:28 | -26.6 | Dark | Up | 13.5 | 141.7 | Really Low | 06:58:28 - 07:28:28 | 6954 |
| Penticton | 07:13:28 | -26.7 | Dark | Up | 13.6 | 141.8 | Really Low | 06:58:28 - 07:28:28 | 6953 |
| Oliver | 07:13:28 | -27.0 | Dark | Up | 13.9 | 141.7 | Really Low | 06:58:28 - 07:28:28 | 6933 |
| Anarchist Mountain Observatory | 07:13:28 | -27.2 | Dark | Up | 14.1 | 141.8 | Really Low | 06:58:28 - 07:28:28 | 6929 |
| Okanogan | 07:13:29 | -27.8 | Dark | Up | 14.5 | 141.6 | Really Low | 06:58:29 - 07:28:29 | 6885 |
| Brewster | 07:13:30 | -28.1 | Dark | Up | 14.6 | 141.3 | Really Low | 06:58:30 - 07:28:30 | 6863 |
| Manson/Chelan | 07:13:32 | -28.2 | Dark | Up | 14.7 | 141.0 | Really Low | 06:58:32 - 07:28:32 | 6841 |
| Wenatchee | 07:13:34 | -28.7 | Dark | Up | 15.0 | 140.8 | Really Low | 06:58:34 - 07:28:34 | 6808 |
| Victoria | 07:13:38 | -27.1 | Dark | Up | 12.8 | 138.3 | Really Low | 06:58:38 - 07:28:38 | 6794 |
| Ellensburg | 07:13:34 | -29.0 | Dark | Up | 15.2 | 140.5 | Really Low | 06:58:34 - 07:28:34 | 6777 |
| Dunrhomin | 07:12:57 | -36.6 | Dark | Up | 26.8 | 153.2 | Low | 06:57:57 - 07:27:57 | 6764 |
| PNWRO | 07:13:32 | -30.3 | Dark | Up | 16.7 | 141.8 | Really Low | 06:58:32 - 07:28:32 | 6760 |
| Nikitin | 07:12:59 | -36.8 | Dark | Up | 27.0 | 153.2 | Low | 06:57:59 - 07:27:59 | 6751 |
| Yakima | 07:13:36 | -29.4 | Dark | Up | 15.5 | 140.4 | Really Low | 06:58:36 - 07:28:36 | 6751 |
| CU-SBO | 07:12:59 | -36.8 | Dark | Up | 27.0 | 153.1 | Low | 06:57:59 - 07:27:59 | 6745 |
| Toppenish/White Swan | 07:13:36 | -29.7 | Dark | Up | 15.7 | 140.5 | Really Low | 06:58:36 - 07:28:36 | 6742 |
| The Dalles | 07:13:38 | -30.3 | Dark | Up | 16.0 | 139.7 | Really Low | 06:58:38 - 07:28:38 | 6671 |
| Maupin | 07:13:39 | -30.7 | Dark | Up | 16.3 | 139.7 | Really Low | 06:58:39 - 07:28:39 | 6648 |
| Sisters | 07:13:43 | -31.5 | Dark | Up | 16.8 | 139.1 | Really Low | 06:58:43 - 07:28:43 | 6577 |
| Bend | 07:13:43 | -31.8 | Dark | Up | 17.1 | 139.3 | Really Low | 06:58:43 - 07:28:43 | 6568 |
| Oregon Observatory | 07:13:42 | -31.9 | Dark | Up | 17.2 | 139.2 | Really Low | 06:58:42 - 07:28:42 | 6553 |
| Chiloquin | 07:13:46 | -33.1 | Dark | Up | 18.0 | 138.5 | Really Low | 06:58:46 - 07:28:46 | 6453 |
| Klamath Falls | 07:13:47 | -33.5 | Dark | Up | 18.3 | 138.5 | Really Low | 06:58:47 - 07:28:47 | 6431 |
| Cedarville | 07:13:43 | -34.4 | Dark | Up | 19.6 | 139.8 | Really Low | 06:58:43 - 07:28:43 | 6430 |
| Fall River/Burney | 07:13:48 | -34.7 | Dark | Up | 19.3 | 138.6 | Really Low | 06:58:48 - 07:28:48 | 6360 |
| Gimple | 07:13:48 | -35.7 | Dark | Up | 20.3 | 138.9 | Low | 06:58:48 - 07:28:48 | 6312 |
| Greenville | 07:13:48 | -35.6 | Dark | Up | 20.2 | 138.8 | Low | 06:58:48 - 07:28:48 | 6310 |
| Reno | 07:13:46 | -36.4 | Dark | Up | 21.3 | 139.6 | Low | 06:58:46 - 07:28:46 | 6301 |
| Portola | 07:13:46 | -36.1 | Dark | Up | 20.7 | 139.1 | Low | 06:58:46 - 07:28:46 | 6301 |
| Quincy | 07:13:47 | -35.8 | Dark | Up | 20.4 | 138.7 | Low | 06:58:47 - 07:28:47 | 6295 |
| Yerington | 07:13:45 | -37.1 | Dark | Up | 22.0 | 140.0 | Low | 06:58:45 - 07:28:45 | 6281 |
| Carson City | 07:13:46 | -36.8 | Dark | Up | 21.5 | 139.5 | Low | 06:58:46 - 07:28:46 | 6276 |
| Hawthorne | 07:13:43 | -37.6 | Dark | Up | 22.6 | 140.4 | Low | 06:58:43 - 07:28:43 | 6264 |
| Gardnerville | 07:13:45 | -37.0 | Dark | Up | 21.8 | 139.5 | Low | 06:58:45 - 07:28:45 | 6260 |
| Lee Vining | 07:13:45 | -38.1 | Dark | Up | 22.8 | 139.8 | Low | 06:58:45 - 07:28:45 | 6208 |
| Beatty | 07:13:40 | -39.5 | Dark | Up | 24.8 | 141.5 | Low | 06:58:40 - 07:28:40 | 6201 |
| Bishop | 07:13:44 | -38.8 | Dark | Up | 23.6 | 140.3 | Low | 06:58:44 - 07:28:44 | 6186 |
| Patrick | 07:13:32 | -41.3 | Dark | Up | 27.4 | 143.7 | Low | 06:58:32 - 07:28:32 | 6179 |
| Laughlin/Bullhead City | 07:13:34 | -41.5 | Dark | Up | 27.3 | 143.0 | Low | 06:58:34 - 07:28:34 | 6139 |
| George/Scottsdale | 07:13:26 | -43.1 | Dark | Up | 29.7 | 145.0 | Low | 06:58:26 - 07:28:26 | 6113 |
| Lake Havasu City | 07:13:34 | -42.2 | Dark | Up | 27.9 | 143.0 | Low | 06:58:34 - 07:28:34 | 6096 |
| Idyllwild | 07:13:43 | -42.6 | Dark | Up | 27.3 | 140.6 | Low | 06:58:43 - 07:28:43 | 5964 |
| Calipatria | 07:13:40 | -43.4 | Dark | Up | 28.4 | 141.5 | Low | 06:58:40 - 07:28:40 | 5953 |
| Yuma | 07:13:37 | -43.9 | Dark | Up | 29.2 | 142.1 | Low | 06:58:37 - 07:28:37 | 5948 |
| Wildwood | 07:13:49 | -42.0 | Dark | Up | 26.0 | 139.1 | Low | 06:58:49 - 07:28:49 | 5931 |
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 118378, (2024/04/24 07:11UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.92 32 8Bet1Sco 16:05:26.2 -19:48:20 2.6 1.41 25 8Bet2Sco 16:05:26.7 -19:48:07 5.1 1.40 25 PPM 231132 16:03:17.9 -18:16:09 7.9 0.23 25 PPM 231156 16:04:33.6 -18:23:29 10.0 0.16 25 118378 16:03:55.7 -18:26:45 15.3 25 Positions are for J2000
Event circumstances last updated at 2024/03/21 22:29:28 UT
Marc W. Buie, Southwest Research Institute