Event between (38084) 99HB12 and star GA0800:05158738 with event index number of 1327818
Geocentric closest approach at 2024/05/05 10:10:53 UTC
J2000 position of star is 16:23:20.5 -08:07:46
Equinox of date position of star is 16:24:39.5 -08:11:04
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon.
Moon is 10% illuminated.
Apparent brightness V=22.3
[RECON map]
Object is 32.8 AU from the Sun
and 31.8 AU from the Earth.
Apparent velocity is 21.6
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is
1394 km.
The sky-plane scale is
23093.3 km/arcsec.
The object has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 10.8 sec chord
Diameter=94.4 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 5:2EEE
Star training set for 38084, (2024/05/05 10:11UT) Object RA Dec mag sep mel Antares 16:30:54.2 -26:29:02 0.9 18.36 118 13Zet Oph 16:38:30.1 -10:36:52 2.6 4.19 119 3Ups Oph 16:29:07.3 -08:25:27 4.2 1.13 121 PPM 199584 16:23:36.8 -08:47:51 7.9 0.67 122 PPM 199617 16:25:13.6 -07:57:42 8.9 0.26 122 38084 16:24:39.6 -08:11:05 16.2 122 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 15.8 km
RECON observability=1.0 and success probability=15.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 10:10:55 | -10.0 | NT | Down | 26.2 | 207.5 | Low | 10:02:59 - 10:18:51 | -652 |
| Kamloops | 10:11:35 | -16.8 | AT | Down | 30.5 | 192.1 | Up | 10:03:39 - 10:19:31 | -951 |
| Kelowna | 10:11:31 | -17.1 | AT | Down | 31.2 | 193.2 | Up | 10:03:35 - 10:19:27 | -977 |
| Peachland | 10:11:32 | -17.3 | AT | Down | 31.3 | 192.8 | Up | 10:03:36 - 10:19:28 | -988 |
| Summerland | 10:11:31 | -17.4 | AT | Down | 31.5 | 193.0 | Up | 10:03:35 - 10:19:27 | -994 |
| Penticton | 10:11:31 | -17.4 | AT | Down | 31.5 | 193.1 | Up | 10:03:35 - 10:19:27 | -996 |
| Oliver | 10:11:31 | -17.7 | AT | Down | 31.8 | 193.2 | Up | 10:03:35 - 10:19:27 | -1014 |
| Anarchist Mountain Observatory | 10:11:30 | -17.8 | AT | Down | 32.0 | 193.4 | Up | 10:03:34 - 10:19:26 | -1019 |
| Okanogan | 10:11:30 | -18.4 | Dark | Down | 32.6 | 193.2 | Up | 10:03:34 - 10:19:26 | -1059 |
| Brewster | 10:11:30 | -18.7 | Dark | Down | 32.9 | 193.0 | Up | 10:03:34 - 10:19:26 | -1078 |
| Manson/Chelan | 10:11:31 | -19.0 | Dark | Down | 33.2 | 192.6 | Up | 10:03:35 - 10:19:27 | -1096 |
| Victoria | 10:11:42 | -19.6 | Dark | Down | 33.0 | 188.8 | Up | 10:03:46 - 10:19:38 | -1124 |
| Wenatchee | 10:11:31 | -19.5 | Dark | Down | 33.7 | 192.5 | Up | 10:03:35 - 10:19:27 | -1126 |
| Ellensburg | 10:11:30 | -19.9 | Dark | Down | 34.1 | 192.3 | Up | 10:03:34 - 10:19:26 | -1154 |
| Yakima | 10:11:30 | -20.2 | Dark | Down | 34.5 | 192.3 | Up | 10:03:34 - 10:19:26 | -1177 |
| PNWRO | 10:11:24 | -20.1 | Dark | Down | 34.8 | 194.4 | Up | 10:03:28 - 10:19:20 | -1178 |
| Toppenish/White Swan | 10:11:29 | -20.4 | Dark | Down | 34.7 | 192.6 | Up | 10:03:33 - 10:19:25 | -1187 |
| The Dalles | 10:11:31 | -21.3 | Dark | Down | 35.6 | 191.8 | Up | 10:03:35 - 10:19:27 | -1248 |
| Maupin | 10:11:29 | -21.6 | Dark | Down | 36.0 | 191.9 | Up | 10:03:33 - 10:19:25 | -1271 |
| Dunrhomin | 10:10:26 | -17.7 | AT | Down | 36.2 | 211.7 | Up | 10:02:30 - 10:18:22 | -1272 |
| Nikitin | 10:10:25 | -17.8 | AT | Down | 36.4 | 211.8 | Up | 10:02:29 - 10:18:21 | -1284 |
| CU-SBO | 10:10:25 | -17.9 | AT | Down | 36.5 | 211.7 | Up | 10:02:29 - 10:18:21 | -1289 |
| Sisters | 10:11:30 | -22.5 | Dark | Down | 36.9 | 191.5 | Up | 10:03:34 - 10:19:26 | -1334 |
| Bend | 10:11:29 | -22.6 | Dark | Down | 37.1 | 191.8 | Up | 10:03:33 - 10:19:25 | -1343 |
| Oregon Observatory | 10:11:29 | -22.8 | Dark | Down | 37.3 | 191.7 | Up | 10:03:33 - 10:19:25 | -1357 |
| Chiloquin | 10:11:29 | -24.1 | Dark | Down | 38.6 | 191.4 | Up | 10:03:33 - 10:19:25 | -1449 |
| Klamath Falls | 10:11:28 | -24.4 | Dark | Down | 39.0 | 191.5 | Up | 10:03:32 - 10:19:24 | -1469 |
| Cedarville | 10:11:21 | -24.3 | Dark | Down | 39.4 | 193.6 | Up | 10:03:25 - 10:19:17 | -1480 |
| Fall River/Burney | 10:11:25 | -25.2 | Dark | Down | 40.1 | 192.2 | Up | 10:03:29 - 10:19:21 | -1538 |
| Gimple | 10:11:22 | -25.7 | Dark | Down | 40.9 | 193.0 | Up | 10:03:26 - 10:19:18 | -1588 |
| Greenville | 10:11:22 | -25.7 | Dark | Down | 40.9 | 192.9 | Up | 10:03:26 - 10:19:18 | -1589 |
| Portola | 10:11:20 | -25.8 | Dark | Down | 41.1 | 193.6 | Up | 10:03:24 - 10:19:16 | -1601 |
| Quincy | 10:11:22 | -25.9 | Dark | Down | 41.1 | 193.0 | Up | 10:03:26 - 10:19:18 | -1603 |
| Reno | 10:11:17 | -25.7 | Dark | Down | 41.3 | 194.5 | Up | 10:03:21 - 10:19:13 | -1605 |
| Yerington | 10:11:14 | -25.9 | Dark | Down | 41.7 | 195.4 | Up | 10:03:18 - 10:19:10 | -1628 |
| Carson City | 10:11:16 | -26.0 | Dark | Down | 41.6 | 194.6 | Up | 10:03:20 - 10:19:12 | -1629 |
| Gardnerville | 10:11:16 | -26.2 | Dark | Down | 41.8 | 194.7 | Up | 10:03:20 - 10:19:12 | -1644 |
| Hawthorne | 10:11:11 | -26.0 | Dark | Down | 42.0 | 196.2 | Up | 10:03:15 - 10:19:07 | -1649 |
| Lee Vining | 10:11:12 | -26.7 | Dark | Down | 42.7 | 195.7 | Up | 10:03:16 - 10:19:08 | -1698 |
| Beatty | 10:11:01 | -26.3 | Dark | Down | 43.1 | 199.1 | Up | 10:03:05 - 10:18:57 | -1722 |
| Bishop | 10:11:08 | -26.8 | Dark | Down | 43.1 | 196.8 | Up | 10:03:12 - 10:19:04 | -1725 |
| Patrick | 10:10:47 | -25.9 | Dark | Down | 43.7 | 203.3 | Up | 10:02:51 - 10:18:43 | -1766 |
| Laughlin/Bullhead City | 10:10:49 | -26.5 | Dark | Down | 44.1 | 202.4 | Up | 10:02:53 - 10:18:45 | -1800 |
| Lake Havasu City | 10:10:48 | -26.9 | Dark | Down | 44.7 | 203.0 | Up | 10:02:52 - 10:18:44 | -1844 |
| George/Scottsdale | 10:10:36 | -26.0 | Dark | Down | 44.5 | 206.5 | Up | 10:02:40 - 10:18:32 | -1848 |
| Idyllwild | 10:10:55 | -28.7 | Dark | Down | 46.1 | 200.1 | Up | 10:02:59 - 10:18:51 | -1952 |
| Wildwood | 10:11:04 | -29.5 | Dark | Down | 46.2 | 197.5 | Up | 10:03:08 - 10:19:00 | -1969 |
| Calipatria | 10:10:50 | -28.6 | Dark | Down | 46.3 | 202.0 | Up | 10:02:54 - 10:18:46 | -1973 |
| Yuma | 10:10:46 | -28.4 | Dark | Down | 46.4 | 203.3 | Up | 10:02:50 - 10:18:42 | -1985 |
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 38084, (2024/05/05 10:11UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 18.36 118 13Zet Oph 16:37:09.6 -10:34:01 2.6 4.19 119 3Ups Oph 16:27:48.0 -08:22:18 4.2 1.13 121 PPM 199584 16:22:17.4 -08:44:30 7.9 0.67 122 PPM 199617 16:23:54.6 -07:54:25 8.9 0.26 122 38084 16:23:20.5 -08:07:46 16.2 122 Positions are for J2000
Event circumstances last updated at 2024/04/23 03:20:33 UT
Marc W. Buie, Southwest Research Institute