Event between (524531) 02XH91 and star GA1100:03119623 with event index number of 2571727
Geocentric closest approach at 2028/12/12 20:29:22 UTC
J2000 position of star is 08:49:29.6 +21:38:24
Equinox of date position of star is 08:50:47.3 +21:33:21
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 91 degrees from the moon.
Moon is 13% illuminated.
TNO apparent brightness V=22.5
TNO is 46.7 AU from the Sun
and 46.0 AU from the Earth.
The TNO is moving 16.3
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 574 seconds.
The 1-sigma cross-track error in the shadow position is
4316 km.
The TNO has an absolute magnitude Hv=5.7
Diameter=444.6 km assuming a 5% albedo -- 27.3 sec chord
Diameter=181.5 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 524531, (2028/12/12 20:34UT) Object RA Dec mag sep mel Pollux 07:47:05.3 +27:57:14 1.1 15.88 107 43Gam Cnc 08:44:57.5 +21:21:45 4.7 1.45 92 PPM 099029 08:48:09.7 +22:14:41 8.5 1.00 92 PPM 099067 08:50:49.0 +21:47:01 9.9 0.27 91 PPM 099061 08:50:24.0 +21:26:58 11.1 0.20 91 524531 08:51:09.9 +21:31:52 14.8 90 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 524531, (2028/12/12 20:34UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 15.88 107 43Gam Cnc 08:43:17.0 +21:28:06 4.7 1.45 92 PPM 099029 08:46:28.8 +22:21:08 8.5 1.00 92 PPM 099067 08:49:08.5 +21:53:33 9.9 0.27 91 PPM 099061 08:48:43.7 +21:33:29 11.1 0.20 91 524531 08:49:29.6 +21:38:24 14.8 91 Positions are for J2000
Event circumstances last updated at 2022/06/01 23:40:48 UT
Marc W. Buie, Southwest Research Institute