Event between (278361) 07JJ43 and star GA0640:20780611 with event index number of 2183289
Geocentric closest approach at 2028/05/30 06:44:30 UTC
J2000 position of star is 17:50:30.4 -24:32:43
Equinox of date position of star is 17:51:59.5 -24:33:01
Stellar brightness G=16.3,
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 38% illuminated.
Apparent brightness V=20.6
[RECON map]
Object is 40.5 AU from the Sun
and 39.5 AU from the Earth.
Apparent velocity is 22.8
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 470 seconds.
The 1-sigma cross-track error in the shadow position is
2963 km.
The sky-plane scale is
28659.4 km/arcsec.
The object has an absolute magnitude Hv=4.5
Diameter=758.6 km assuming a 5% albedo -- 33.4 sec chord
Diameter=309.7 km assuming a 30% albedo -- 13.6 sec chord
Dynamical classification is SCATNEAR
Star training set for 278361, (2028/05/30 06:22UT) Object RA Dec mag sep mel Antares 16:31:09.3 -26:29:33 0.9 18.38 104 35Eta Oph 17:12:00.6 -15:45:29 2.6 12.89 113 PPM 267497 17:56:39.1 -24:53:24 6.4 1.05 123 PPM 267390 17:52:14.6 -24:51:33 7.8 0.31 122 PPM 267405 17:53:01.0 -24:30:55 9.1 0.18 122 278361 17:52:15.1 -24:33:04 16.3 123 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
1.9 sigma about the mid-time.
The median site spacing is 10.8 km
RECON observability=0.2 and success probability=6.8%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 06:45:54 | -16.0 | AT | Up | 10.6 | 158.1 | Really Low | 06:30:54 - 07:00:54 | 1908 |
| Kamloops | 06:46:33 | -15.7 | AT | Up | 7.6 | 145.6 | Really Low | 06:31:33 - 07:01:33 | 1601 |
| Kelowna | 06:46:33 | -16.7 | AT | Up | 8.6 | 146.2 | Really Low | 06:31:33 - 07:01:33 | 1588 |
| Peachland | 06:46:33 | -16.7 | AT | Up | 8.6 | 146.0 | Really Low | 06:31:33 - 07:01:33 | 1578 |
| Summerland | 06:46:34 | -16.9 | AT | Up | 8.8 | 146.1 | Really Low | 06:31:34 - 07:01:34 | 1574 |
| Penticton | 06:46:34 | -17.0 | AT | Up | 8.9 | 146.1 | Really Low | 06:31:34 - 07:01:34 | 1573 |
| Oliver | 06:46:34 | -17.3 | AT | Up | 9.2 | 146.1 | Really Low | 06:31:34 - 07:01:34 | 1559 |
| Anarchist Mountain Observatory | 06:46:34 | -17.5 | AT | Up | 9.4 | 146.3 | Really Low | 06:31:34 - 07:01:34 | 1557 |
| Okanogan | 06:46:36 | -18.1 | Dark | Up | 9.8 | 146.0 | Really Low | 06:31:36 - 07:01:36 | 1524 |
| Brewster | 06:46:37 | -18.3 | Dark | Up | 10.0 | 145.8 | Really Low | 06:31:37 - 07:01:37 | 1509 |
| Manson/Chelan | 06:46:39 | -18.4 | Dark | Up | 10.0 | 145.5 | Really Low | 06:31:39 - 07:01:39 | 1492 |
| Wenatchee | 06:46:40 | -18.8 | Dark | Up | 10.3 | 145.3 | Really Low | 06:31:40 - 07:01:40 | 1467 |
| Victoria | 06:46:45 | -17.1 | AT | Up | 8.2 | 142.9 | Really Low | 06:31:45 - 07:01:45 | 1446 |
| Ellensburg | 06:46:42 | -19.2 | Dark | Up | 10.6 | 145.1 | Really Low | 06:31:42 - 07:01:42 | 1444 |
| Dunrhomin | 06:46:07 | -27.8 | Dark | Up | 21.8 | 157.5 | Low | 06:31:07 - 07:01:07 | 1436 |
| PNWRO | 06:46:39 | -20.5 | Dark | Up | 12.0 | 146.4 | Really Low | 06:31:39 - 07:01:39 | 1436 |
| Nikitin | 06:46:07 | -28.0 | Dark | Up | 21.9 | 157.5 | Low | 06:31:07 - 07:01:07 | 1426 |
| Yakima | 06:46:42 | -19.6 | Dark | Up | 10.9 | 145.0 | Really Low | 06:31:42 - 07:01:42 | 1425 |
| CU-SBO | 06:46:08 | -28.1 | Dark | Up | 22.0 | 157.4 | Low | 06:31:08 - 07:01:08 | 1422 |
| Toppenish/White Swan | 06:46:42 | -19.8 | Dark | Up | 11.2 | 145.2 | Really Low | 06:31:42 - 07:01:42 | 1419 |
| The Dalles | 06:46:46 | -20.4 | Dark | Up | 11.5 | 144.4 | Really Low | 06:31:46 - 07:01:46 | 1364 |
| Maupin | 06:46:47 | -20.8 | Dark | Up | 11.9 | 144.5 | Really Low | 06:31:47 - 07:01:47 | 1347 |
| Sisters | 06:46:50 | -21.5 | Dark | Up | 12.4 | 144.0 | Really Low | 06:31:50 - 07:01:50 | 1292 |
| Bend | 06:46:50 | -21.8 | Dark | Up | 12.7 | 144.1 | Really Low | 06:31:50 - 07:01:50 | 1287 |
| Oregon Observatory | 06:46:51 | -22.0 | Dark | Up | 12.8 | 144.0 | Really Low | 06:31:51 - 07:01:51 | 1275 |
| Chiloquin | 06:46:54 | -23.1 | Dark | Up | 13.7 | 143.5 | Really Low | 06:31:54 - 07:01:54 | 1197 |
| Cedarville | 06:46:51 | -24.5 | Dark | Up | 15.2 | 144.7 | Really Low | 06:31:51 - 07:01:51 | 1184 |
| Klamath Falls | 06:46:54 | -23.4 | Dark | Up | 14.0 | 143.5 | Really Low | 06:31:54 - 07:01:54 | 1181 |
| Fall River/Burney | 06:46:56 | -24.7 | Dark | Up | 15.1 | 143.6 | Really Low | 06:31:56 - 07:01:56 | 1127 |
| Gimple | 06:46:56 | -25.6 | Dark | Up | 16.1 | 143.9 | Really Low | 06:31:56 - 07:01:56 | 1090 |
| Greenville | 06:46:56 | -25.6 | Dark | Up | 16.0 | 143.9 | Really Low | 06:31:56 - 07:01:56 | 1088 |
| Reno | 06:46:54 | -26.5 | Dark | Up | 17.0 | 144.7 | Really Low | 06:31:54 - 07:01:54 | 1083 |
| Portola | 06:46:56 | -26.0 | Dark | Up | 16.5 | 144.2 | Really Low | 06:31:56 - 07:01:56 | 1082 |
| Quincy | 06:46:56 | -25.8 | Dark | Up | 16.2 | 143.8 | Really Low | 06:31:56 - 07:01:56 | 1077 |
| Yerington | 06:46:53 | -27.1 | Dark | Up | 17.8 | 145.1 | Really Low | 06:31:53 - 07:01:53 | 1068 |
| Carson City | 06:46:55 | -26.8 | Dark | Up | 17.3 | 144.7 | Really Low | 06:31:55 - 07:01:55 | 1063 |
| Hawthorne | 06:46:52 | -27.7 | Dark | Up | 18.4 | 145.5 | Really Low | 06:31:52 - 07:01:52 | 1054 |
| Gardnerville | 06:46:55 | -27.0 | Dark | Up | 17.5 | 144.6 | Really Low | 06:31:55 - 07:01:55 | 1050 |
| Lee Vining | 06:46:55 | -28.1 | Dark | Up | 18.6 | 145.0 | Really Low | 06:31:55 - 07:01:55 | 1010 |
| Beatty | 06:46:49 | -29.7 | Dark | Up | 20.5 | 146.7 | Low | 06:31:49 - 07:01:49 | 1005 |
| Bishop | 06:46:53 | -28.9 | Dark | Up | 19.4 | 145.5 | Really Low | 06:31:53 - 07:01:53 | 992 |
| Patrick | 06:46:42 | -31.7 | Dark | Up | 23.0 | 148.9 | Low | 06:31:42 - 07:01:42 | 984 |
| Laughlin/Bullhead City | 06:46:45 | -31.8 | Dark | Up | 23.0 | 148.2 | Low | 06:31:45 - 07:01:45 | 952 |
| George/Scottsdale | 06:46:37 | -33.7 | Dark | Up | 25.3 | 150.3 | Low | 06:31:37 - 07:01:37 | 926 |
| Lake Havasu City | 06:46:45 | -32.5 | Dark | Up | 23.6 | 148.3 | Low | 06:31:45 - 07:01:45 | 916 |
| Idyllwild | 06:46:54 | -32.7 | Dark | Up | 23.2 | 146.1 | Low | 06:31:54 - 07:01:54 | 810 |
| Calipatria | 06:46:51 | -33.6 | Dark | Up | 24.3 | 147.0 | Low | 06:31:51 - 07:01:51 | 799 |
| Yuma | 06:46:48 | -34.2 | Dark | Up | 25.0 | 147.6 | Low | 06:31:48 - 07:01:48 | 793 |
| Wildwood | 06:46:59 | -31.9 | Dark | Up | 22.0 | 144.6 | Low | 06:31:59 - 07:01:59 | 783 |
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 278361, (2028/05/30 06:22UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 18.38 104 35Eta Oph 17:10:22.7 -15:43:29 2.6 12.89 113 PPM 267497 17:54:54.1 -24:53:13 6.4 1.05 123 PPM 267390 17:50:29.7 -24:51:11 7.8 0.31 122 PPM 267405 17:51:16.3 -24:30:35 9.1 0.18 122 278361 17:50:30.4 -24:32:43 16.3 122 Positions are for J2000
Event circumstances last updated at 2024/03/07 04:24:39 UT
Marc W. Buie, Southwest Research Institute