Event between (531684) 12UE178 and star GA1100:00762898 with event index number of 2574144
Geocentric closest approach at 2023/01/28 00:00:25 UTC
J2000 position of star is 04:51:46.7 +21:25:01
Equinox of date position of star is 04:53:09.0 +21:27:15
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 44 degrees from the moon.
Moon is 43% illuminated.
Apparent brightness V=22.9
Object is 45.4 AU from the Sun
and 44.8 AU from the Earth.
Apparent velocity is 13.9
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 858 seconds.
The 1-sigma cross-track error in the shadow position is
3944 km.
The object has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 24.6 sec chord
Diameter=141.6 km assuming a 30% albedo -- 10.0 sec chord
Dynamical classification is CLASSICAL
Star training set for 531684, (2023/01/28 00:00UT) Object RA Dec mag sep mel Aldebaran 04:37:14.8 +16:33:14 0.8 6.18 40 Alnath 05:27:45.2 +28:37:29 1.6 10.61 53 97 Tau 04:52:43.6 +18:52:38 5.1 2.58 44 PPM 093789 04:50:06.3 +21:21:17 7.3 0.72 43 PPM 093847 04:54:13.7 +21:10:06 9.7 0.38 44 PPM 093815 04:52:10.7 +21:26:42 11.3 0.23 44 531684 04:53:09.2 +21:27:15 15.9 44 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 531684, (2023/01/28 00:00UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 6.18 40 Alnath 05:26:17.6 +28:36:23 1.6 10.61 53 97 Tau 04:51:22.6 +18:50:23 5.1 2.58 44 PPM 093789 04:48:43.8 +21:18:56 7.3 0.72 43 PPM 093847 04:52:51.3 +21:07:54 9.7 0.38 44 PPM 093815 04:50:48.2 +21:24:26 11.3 0.23 44 531684 04:51:46.7 +21:25:01 15.9 44 Positions are for J2000
Event circumstances last updated at 2023/01/02 00:29:50 UT
Marc W. Buie, Southwest Research Institute