Event between (531224) 12HK85 and star GA0720:05470712 with event index number of 2442158
Geocentric closest approach at 2024/08/28 22:02:00 UTC
J2000 position of star is 15:18:53.9 -16:23:02
Equinox of date position of star is 15:20:16.4 -16:28:18
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 134 degrees from the moon.
Moon is 24% illuminated.
Apparent brightness V=22.9
Object is 38.6 AU from the Sun
and 38.9 AU from the Earth.
Apparent velocity is 13.1
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 298 seconds.
The 1-sigma cross-track error in the shadow position is
2065 km.
The object has an absolute magnitude Hv=6.8
Diameter=259.4 km assuming a 5% albedo -- 19.8 sec chord
Diameter=105.9 km assuming a 30% albedo -- 8.1 sec chord
Dynamical classification is SCATNEAR
Star training set for 531224, (2024/08/28 22:02UT) Object RA Dec mag sep mel Antares 16:30:55.4 -26:29:04 0.9 19.21 153 27Bet Lib 15:18:20.3 -09:28:20 2.6 7.02 130 28 Lib 15:22:17.9 -18:14:47 6.4 1.84 135 PPM 230166 15:24:54.4 -16:39:02 7.6 1.12 135 PPM 230054 15:20:21.3 -16:22:06 9.7 0.11 134 531224 15:20:17.1 -16:28:21 16.6 134 Positions are for equinox of date
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 531224, (2024/08/28 22:02UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 19.21 153 27Bet Lib 15:17:00.3 -09:22:59 2.6 7.02 130 28 Lib 15:20:53.7 -18:09:32 6.4 1.84 135 PPM 230166 15:23:30.9 -16:33:51 7.6 1.12 135 PPM 230054 15:18:58.0 -16:16:48 9.7 0.11 134 531224 15:18:53.9 -16:23:02 16.6 134 Positions are for J2000
Event circumstances last updated at 2024/06/12 03:39:50 UT
Marc W. Buie, Southwest Research Institute