Event between (535168) 14XU40 and star GA1120:01736633 with event index number of 2259831
Geocentric closest approach at 2025/12/01 01:49:52 UTC
J2000 position of star is 06:04:07.8 +22:25:17
Equinox of date position of star is 06:05:27.6 +22:25:08
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon.
Moon is 79% illuminated.
TNO apparent brightness V=22.4
TNO is 33.5 AU from the Sun
and 32.6 AU from the Earth.
The TNO is moving 22.6
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 243 seconds.
The 1-sigma cross-track error in the shadow position is
1263 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 10.2 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 3:2E
Star training set for 535168, (2025/12/01 01:44UT) Object RA Dec mag sep mel Betelgeuse 05:56:34.5 +07:24:35 0.4 15.17 76 Alhena 06:39:12.5 +16:22:30 1.9 9.94 85 PPM 095249 06:03:15.6 +22:23:58 6.2 0.56 76 PPM 095278 06:04:14.8 +22:02:40 8.0 0.50 76 PPM 095327 06:05:42.8 +22:28:47 9.8 0.06 77 535168 06:05:41.8 +22:25:06 16.9 77 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 535168, (2025/12/01 01:44UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 15.17 76 Alhena 06:37:42.8 +16:23:57 1.9 9.94 85 PPM 095249 06:01:41.6 +22:24:04 6.2 0.56 76 PPM 095278 06:02:41.0 +22:02:48 8.0 0.50 76 PPM 095327 06:04:08.8 +22:28:58 9.8 0.06 77 535168 06:04:07.8 +22:25:17 16.9 77 Positions are for J2000
Event circumstances last updated at 2022/01/06 23:44:54 UT
Marc W. Buie, Southwest Research Institute