Event between (123509) 00WK183 and star GA1100:02286209 with event index number of 2142682
Geocentric closest approach at 2028/04/10 23:34:44 UTC
J2000 position of star is 06:38:28.9 +21:11:13
Equinox of date position of star is 06:39:48.2 +21:09:57
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 123 degrees from the moon.
Moon is 97% illuminated.
TNO apparent brightness V=22.9
TNO is 42.5 AU from the Sun
and 42.7 AU from the Earth.
The TNO is moving 10.5
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 733 seconds.
The 1-sigma cross-track error in the shadow position is
1703 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 28.7 sec chord
Diameter=123.3 km assuming a 30% albedo -- 11.7 sec chord
Dynamical classification is CLASSICAL
Star training set for 123509, (2028/04/10 23:39UT) Object RA Dec mag sep mel Pollux 07:47:02.8 +27:57:20 1.1 16.63 110 Alhena 06:39:20.7 +16:22:22 1.9 4.79 122 PPM 096308 06:40:47.3 +22:00:12 6.0 0.86 123 PPM 096360 06:42:23.8 +20:54:40 8.4 0.58 123 PPM 096276 06:39:26.2 +21:25:30 9.9 0.32 124 PPM 096288 06:39:59.8 +21:03:31 11.1 0.11 123 123509 06:40:10.3 +21:09:36 16.3 123 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 123509, (2028/04/10 23:39UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 16.63 110 Alhena 06:37:42.8 +16:23:57 1.9 4.79 122 PPM 096308 06:39:05.3 +22:01:51 6.0 0.86 123 PPM 096360 06:40:42.6 +20:56:23 8.4 0.58 123 PPM 096276 06:37:44.6 +21:27:05 9.9 0.32 124 PPM 096288 06:38:18.5 +21:05:08 11.1 0.11 123 123509 06:38:28.9 +21:11:13 16.3 123 Positions are for J2000
Event circumstances last updated at 2022/02/10 00:32:49 UT
Marc W. Buie, Southwest Research Institute