Event between (531683) 12UC178 and star GA1100:00794493 with event index number of 2445216
Geocentric closest approach at 2027/12/27 16:27:50 UTC
J2000 position of star is 04:55:36.4 +20:08:56
Equinox of date position of star is 04:57:02.2 +20:11:09
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 160 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=22.9
Object is 40.7 AU from the Sun
and 39.8 AU from the Earth.
Apparent velocity is 23.7
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 230 seconds.
The 1-sigma cross-track error in the shadow position is
1697 km.
The object has an absolute magnitude Hv=6.8
Diameter=263.0 km assuming a 5% albedo -- 11.0 sec chord
Diameter=107.4 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is 5:3EE
Star training set for 531683, (2027/12/27 16:28UT) Object RA Dec mag sep mel Aldebaran 04:37:31.8 +16:33:49 0.8 5.92 155 Alnath 05:28:03.8 +28:37:43 1.6 10.96 168 97 Tau 04:53:00.9 +18:53:06 5.1 1.65 159 PPM 120385 04:56:37.3 +19:31:42 7.2 0.68 160 PPM 093896 04:57:21.1 +20:02:33 9.2 0.15 160 531683 04:57:15.7 +20:11:30 16.9 161 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 531683, (2027/12/27 16:28UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 5.92 155 Alnath 05:26:17.6 +28:36:23 1.6 10.96 168 97 Tau 04:51:22.6 +18:50:23 5.1 1.65 159 PPM 120385 04:54:58.5 +19:29:07 7.2 0.68 160 PPM 093896 04:55:42.0 +20:00:00 9.2 0.15 160 531683 04:55:36.4 +20:08:56 16.9 160 Positions are for J2000
Event circumstances last updated at 2024/03/06 04:35:31 UT
Marc W. Buie, Southwest Research Institute