Event between (432949) 12HH2 and star GA0840:04438205 with event index number of 2437735
Geocentric closest approach at 2023/08/09 09:00:59 UTC
J2000 position of star is 14:29:22.0 -04:39:56
Equinox of date position of star is 14:30:35.8 -04:46:10
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 156 degrees from the moon.
Moon is 40% illuminated.
Apparent brightness V=21.5
Object is 31.3 AU from the Sun
and 31.5 AU from the Earth.
Apparent velocity is 12.5
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 102 seconds.
The 1-sigma cross-track error in the shadow position is
1271 km.
The object has an absolute magnitude Hv=6.3
Diameter=322.1 km assuming a 5% albedo -- 26.0 sec chord
Diameter=131.5 km assuming a 30% albedo -- 10.6 sec chord
Dynamical classification is 5:4E+10:8II
Star training set for 432949, (2023/08/09 09:00UT) Object RA Dec mag sep mel Spica 13:26:26.4 -11:17:02 1.0 17.16 146 27Bet Lib 15:18:16.8 -09:28:07 2.6 12.72 166 105Phi Vir 14:29:25.3 -02:19:58 4.8 2.45 154 PPM 197596 14:30:24.0 -05:02:26 8.5 0.28 156 432949 14:30:36.1 -04:46:11 16.3 156 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, (2023/08/09 09:00UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 17.16 146 27Bet Lib 15:17:00.3 -09:22:59 2.6 12.72 166 105Phi Vir 14:28:11.9 -02:13:41 4.8 2.45 154 PPM 197596 14:29:09.7 -04:56:10 8.5 0.28 156 432949 14:29:22.0 -04:39:56 16.3 156 Positions are for J2000
Event circumstances last updated at 2023/07/04 04:03:37 UT
Marc W. Buie, Southwest Research Institute