Event between (432949) 12HH2 and star GA0800:04618364 with event index number of 2437806
Geocentric closest approach at 2026/05/19 13:29:40 UTC
J2000 position of star is 14:51:27.2 -08:59:50
Equinox of date position of star is 14:52:46.0 -09:05:48
Stellar brightness G=15.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 125 degrees from the moon.
Moon is 11% illuminated.
Apparent brightness V=21.3
Object is 31.8 AU from the Sun
and 30.8 AU from the Earth.
Apparent velocity is 23.9
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 58 seconds.
The 1-sigma cross-track error in the shadow position is
1387 km.
The object has an absolute magnitude Hv=6.3
Diameter=322.1 km assuming a 5% albedo -- 13.6 sec chord
Diameter=131.5 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 5:4E+10:8II
Star training set for 432949, (2026/05/19 13:30UT) Object RA Dec mag sep mel Spica 13:26:35.2 -11:17:53 1.0 21.34 107 27Bet Lib 15:18:25.9 -09:28:43 2.6 6.32 131 19Del Lib 15:02:23.2 -08:37:19 4.9 2.40 127 PPM 197950 14:51:11.0 -09:18:38 8.0 0.46 125 PPM 197979 14:52:40.6 -09:05:29 8.9 0.05 125 432949 14:52:52.1 -09:06:16 15.0 125 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 432949, (2026/05/19 13:30UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 21.34 107 27Bet Lib 15:17:00.3 -09:22:59 2.6 6.32 131 19Del Lib 15:00:58.3 -08:31:08 4.9 2.40 127 PPM 197950 14:49:46.0 -09:12:09 8.0 0.46 125 PPM 197979 14:51:15.7 -08:59:02 8.9 0.05 125 432949 14:51:27.2 -08:59:50 15.0 125 Positions are for J2000
Event circumstances last updated at 2024/06/19 21:23:40 UT
Marc W. Buie, Southwest Research Institute