Event between (523701) 14HT199 and star GA0660:07928251 with event index number of 2333862
Geocentric closest approach at 2026/06/18 13:35:08 UTC
J2000 position of star is 16:46:45.8 -22:23:30
Equinox of date position of star is 16:48:05.1 -22:25:47
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon.
Moon is 17% illuminated.
TNO apparent brightness V=22.0
TNO is 29.9 AU from the Sun
and 28.9 AU from the Earth.
The TNO is moving 22.7
km/sec on the sky relative to the star, or,
3.9 arcsec/hr.
The 1-sigma error in the time of the event is 182 seconds.
The 1-sigma cross-track error in the shadow position is
1928 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 9.0 sec chord
Diameter=83.4 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
Star training set for 523701, (2026/06/18 13:35UT) Object RA Dec mag sep mel Antares 16:31:02.1 -26:29:18 0.9 5.65 114 23Tau Sco 16:37:32.1 -28:16:07 2.8 6.32 116 PPM 266088 16:54:59.2 -20:27:27 5.7 2.51 119 PPM 265937 16:48:04.6 -22:40:28 8.4 0.25 118 PPM 265936 16:48:02.5 -22:21:46 9.9 0.10 118 523701 16:48:21.1 -22:26:14 16.2 118 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 523701, (2026/06/18 13:35UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 5.65 114 23Tau Sco 16:35:52.9 -28:12:58 2.8 6.32 116 PPM 266088 16:53:25.2 -20:24:57 5.7 2.51 119 PPM 265937 16:46:29.2 -22:37:43 8.4 0.25 118 PPM 265936 16:46:27.3 -22:19:01 9.9 0.10 118 523701 16:46:45.8 -22:23:30 16.2 118 Positions are for J2000
Event circumstances last updated at 2022/01/14 00:48:34 UT
Marc W. Buie, Southwest Research Institute