Event between 12HE85 and star GA0700:33682168 with event index number of 2155387
Geocentric closest approach at 2024/07/22 06:16:46 UTC
J2000 position of star is 19:47:42.6 -18:23:31
Equinox of date position of star is 19:49:05.4 -18:19:53
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 17 degrees from the moon.
Moon is 99% illuminated.
Apparent brightness V=25.0
[RECON map]
Object is 40.4 AU from the Sun
and 39.4 AU from the Earth.
Apparent velocity is 24.3
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 1015 seconds.
The 1-sigma cross-track error in the shadow position is
5296 km.
The sky-plane scale is
28597.8 km/arcsec.
The object has an absolute magnitude Hv=9.0
Diameter=96.8 km assuming a 5% albedo -- 4.0 sec chord
Diameter=39.5 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is 9:5EEEE
Star training set for 12HE85, (2024/07/22 06:17UT) Object RA Dec mag sep mel Fomalhaut 22:59:00.1 -29:29:29 1.2 44.49 28 Nunki 18:56:47.2 -26:15:50 2.0 14.46 29 57 Sgr 19:53:37.5 -18:58:50 5.8 1.25 16 PPM 236505 19:49:18.8 -18:20:31 8.4 0.05 17 12HE85 19:49:07.8 -18:19:47 16.8 17 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
0.9 sigma about the mid-time.
The median site spacing is 17.2 km
RECON observability=0.8 and success probability=4.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kamloops | 06:17:05 | -15.1 | AT | Up | 18.1 | 157.5 | Really Low | 06:02:05 - 06:32:05 | -1635 |
| Kelowna | 06:17:04 | -16.1 | AT | Up | 19.1 | 158.3 | Really Low | 06:02:04 - 06:32:04 | -1668 |
| Peachland | 06:17:05 | -16.1 | AT | Up | 19.1 | 158.0 | Really Low | 06:02:05 - 06:32:05 | -1671 |
| Sleaford | 06:16:24 | -16.8 | AT | Up | 19.2 | 171.7 | Really Low | 06:01:24 - 06:31:24 | -1676 |
| Summerland | 06:17:05 | -16.2 | AT | Up | 19.3 | 158.0 | Really Low | 06:02:05 - 06:32:05 | -1677 |
| Penticton | 06:17:05 | -16.3 | AT | Up | 19.4 | 158.1 | Really Low | 06:02:05 - 06:32:05 | -1680 |
| Oliver | 06:17:06 | -16.6 | AT | Up | 19.7 | 158.1 | Really Low | 06:02:06 - 06:32:06 | -1693 |
| Anarchist Mountain Observatory | 06:17:05 | -16.8 | AT | Up | 19.9 | 158.3 | Really Low | 06:02:05 - 06:32:05 | -1699 |
| Victoria | 06:17:17 | -16.0 | AT | Up | 19.3 | 154.3 | Really Low | 06:02:17 - 06:32:17 | -1707 |
| Okanogan | 06:17:07 | -17.4 | AT | Up | 20.5 | 158.0 | Low | 06:02:07 - 06:32:07 | -1724 |
| Brewster | 06:17:08 | -17.5 | AT | Up | 20.7 | 157.7 | Low | 06:02:08 - 06:32:08 | -1734 |
| Manson/Chelan | 06:17:09 | -17.6 | AT | Up | 20.8 | 157.3 | Low | 06:02:09 - 06:32:09 | -1741 |
| Wenatchee | 06:17:11 | -18.0 | AT | Up | 21.2 | 157.1 | Low | 06:02:11 - 06:32:11 | -1760 |
| Ellensburg | 06:17:12 | -18.3 | Dark | Up | 21.5 | 156.8 | Low | 06:02:12 - 06:32:12 | -1777 |
| Yakima | 06:17:12 | -18.7 | Dark | Up | 21.9 | 156.8 | Low | 06:02:12 - 06:32:12 | -1794 |
| Toppenish/White Swan | 06:17:12 | -18.9 | Dark | Up | 22.1 | 156.9 | Low | 06:02:12 - 06:32:12 | -1804 |
| PNWRO | 06:17:08 | -19.7 | Dark | Up | 22.8 | 158.3 | Low | 06:02:08 - 06:32:08 | -1825 |
| The Dalles | 06:17:16 | -19.3 | Dark | Up | 22.6 | 156.0 | Low | 06:02:16 - 06:32:16 | -1835 |
| Maupin | 06:17:16 | -19.7 | Dark | Up | 23.0 | 156.0 | Low | 06:02:16 - 06:32:16 | -1854 |
| Sisters | 06:17:19 | -20.3 | Dark | Up | 23.7 | 155.4 | Low | 06:02:19 - 06:32:19 | -1892 |
| Bend | 06:17:18 | -20.6 | Dark | Up | 24.0 | 155.6 | Low | 06:02:18 - 06:32:18 | -1904 |
| Oregon Observatory | 06:17:20 | -20.8 | Dark | Up | 24.1 | 155.5 | Low | 06:02:20 - 06:32:20 | -1912 |
| Chiloquin | 06:17:23 | -21.8 | Dark | Up | 25.2 | 154.8 | Low | 06:02:23 - 06:32:23 | -1974 |
| Klamath Falls | 06:17:23 | -22.1 | Dark | Up | 25.5 | 154.8 | Low | 06:02:23 - 06:32:23 | -1991 |
| Cedarville | 06:17:19 | -23.3 | Dark | Up | 26.6 | 156.3 | Low | 06:02:19 - 06:32:19 | -2032 |
| Fall River/Burney | 06:17:24 | -23.3 | Dark | Up | 26.7 | 155.0 | Low | 06:02:24 - 06:32:24 | -2053 |
| Greenville | 06:17:24 | -24.2 | Dark | Up | 27.7 | 155.2 | Low | 06:02:24 - 06:32:24 | -2103 |
| Gimple | 06:17:23 | -24.2 | Dark | Up | 27.7 | 155.3 | Low | 06:02:23 - 06:32:23 | -2103 |
| Quincy | 06:17:24 | -24.4 | Dark | Up | 27.8 | 155.2 | Low | 06:02:24 - 06:32:24 | -2114 |
| Portola | 06:17:22 | -24.7 | Dark | Up | 28.1 | 155.6 | Low | 06:02:22 - 06:32:22 | -2122 |
| Reno | 06:17:21 | -25.1 | Dark | Up | 28.6 | 156.2 | Low | 06:02:21 - 06:32:21 | -2139 |
| Carson City | 06:17:21 | -25.5 | Dark | Up | 28.9 | 156.2 | Low | 06:02:21 - 06:32:21 | -2159 |
| Yerington | 06:17:20 | -25.9 | Dark | Up | 29.3 | 156.8 | Low | 06:02:20 - 06:32:20 | -2173 |
| Gardnerville | 06:17:22 | -25.7 | Dark | Up | 29.1 | 156.2 | Low | 06:02:22 - 06:32:22 | -2173 |
| Hawthorne | 06:17:19 | -26.5 | Dark | Up | 29.9 | 157.2 | Low | 06:02:19 - 06:32:19 | -2202 |
| Dunrhomin | 06:16:31 | -28.4 | Dark | Up | 30.9 | 171.7 | Up | 06:01:31 - 06:31:31 | -2218 |
| Nikitin | 06:16:32 | -28.6 | Dark | Up | 31.1 | 171.7 | Up | 06:01:32 - 06:31:32 | -2227 |
| CU-SBO | 06:16:32 | -28.7 | Dark | Up | 31.2 | 171.6 | Up | 06:01:32 - 06:31:32 | -2230 |
| Lee Vining | 06:17:21 | -26.8 | Dark | Up | 30.2 | 156.6 | Up | 06:02:21 - 06:32:21 | -2231 |
| Bishop | 06:17:20 | -27.6 | Dark | Up | 31.0 | 157.2 | Up | 06:02:20 - 06:32:20 | -2270 |
| Beatty | 06:17:15 | -28.6 | Dark | Up | 31.9 | 158.8 | Up | 06:02:15 - 06:32:15 | -2307 |
| Patrick | 06:17:07 | -30.9 | Dark | Up | 34.1 | 161.6 | Up | 06:02:07 - 06:32:07 | -2417 |
| Laughlin/Bullhead City | 06:17:09 | -30.9 | Dark | Up | 34.1 | 160.7 | Up | 06:02:09 - 06:32:09 | -2428 |
| Wildwood | 06:17:25 | -30.4 | Dark | Up | 33.9 | 156.2 | Up | 06:02:25 - 06:32:25 | -2470 |
| Lake Havasu City | 06:17:09 | -31.6 | Dark | Up | 34.8 | 160.9 | Up | 06:02:09 - 06:32:09 | -2472 |
| Idyllwild | 06:17:19 | -31.4 | Dark | Up | 34.9 | 158.1 | Up | 06:02:19 - 06:32:19 | -2503 |
| George/Scottsdale | 06:17:01 | -33.1 | Dark | Up | 36.2 | 163.4 | Up | 06:02:01 - 06:32:01 | -2542 |
| Calipatria | 06:17:15 | -32.4 | Dark | Up | 35.8 | 159.2 | Up | 06:02:15 - 06:32:15 | -2552 |
| Yuma | 06:17:13 | -33.1 | Dark | Up | 36.5 | 160.1 | Up | 06:02:13 - 06:32:13 | -2587 |
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 12HE85, (2024/07/22 06:17UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 44.49 28 Nunki 18:55:15.9 -26:17:49 2.0 14.46 29 57 Sgr 19:52:12.0 -19:02:43 5.8 1.25 16 PPM 236505 19:47:53.6 -18:24:16 8.4 0.05 17 12HE85 19:47:42.6 -18:23:31 16.8 17 Positions are for J2000
Event circumstances last updated at 2023/11/08 05:23:34 UT
Marc W. Buie, Southwest Research Institute