Event between (531224) 12HK85 and star GA0720:05623402 with event index number of 2442218
Geocentric closest approach at 2026/01/28 16:33:25 UTC
J2000 position of star is 15:40:08.7 -17:51:14
Equinox of date position of star is 15:41:32.6 -17:55:54
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 164 degrees from the moon.
Moon is 77% illuminated.
Apparent brightness V=22.8
Object is 38.5 AU from the Sun
and 38.8 AU from the Earth.
Apparent velocity is 15.3
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 350 seconds.
The 1-sigma cross-track error in the shadow position is
3184 km.
The object has an absolute magnitude Hv=6.8
Diameter=259.4 km assuming a 5% albedo -- 16.9 sec chord
Diameter=105.9 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 531224, (2026/01/28 16:33UT) Object RA Dec mag sep mel Antares 16:31:00.6 -26:29:15 0.9 14.26 178 8Bet1Sco 16:06:57.5 -19:52:29 2.6 6.29 169 41 Lib 15:40:24.9 -19:23:09 5.3 1.48 164 PPM 230521 15:40:10.6 -17:44:55 7.3 0.39 163 PPM 230563 15:41:51.0 -17:54:19 8.9 0.06 164 531224 15:41:38.1 -17:56:12 16.6 164 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, (2026/01/28 16:33UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 14.26 178 8Bet1Sco 16:05:26.2 -19:48:20 2.6 6.29 169 41 Lib 15:38:54.7 -19:18:08 5.3 1.48 164 PPM 230521 15:38:41.3 -17:39:54 7.3 0.39 163 PPM 230563 15:40:21.5 -17:49:22 8.9 0.06 164 531224 15:40:08.7 -17:51:14 16.6 164 Positions are for J2000
Event circumstances last updated at 2024/06/18 21:24:02 UT
Marc W. Buie, Southwest Research Institute