Event between (576256) 12JH67 and star GA0620:07538513 with event index number of 2524003
Geocentric closest approach at 2026/06/16 00:07:01 UTC
J2000 position of star is 15:48:19.4 -26:54:19
Equinox of date position of star is 15:49:39.8 -26:58:18
Stellar brightness G=14.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.4
TNO is 48.4 AU from the Sun
and 47.4 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 343 seconds.
The 1-sigma cross-track error in the shadow position is
3228 km.
The TNO has an absolute magnitude Hv=5.5
Diameter=476.4 km assuming a 5% albedo -- 20.8 sec chord
Diameter=194.5 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is 2:1E
Star training set for 576256, (2026/06/16 00:07UT) Object RA Dec mag sep mel Antares 16:31:02.0 -26:29:18 0.9 9.19 152 7Del Sco 16:01:54.2 -22:41:41 2.3 5.08 145 PPM 264761 15:52:10.9 -26:22:05 6.5 0.80 144 PPM 264670 15:48:15.6 -26:47:16 8.5 0.42 143 PPM 264721 15:50:21.3 -27:16:17 8.8 0.30 143 576256 15:49:55.9 -26:59:06 14.4 144 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 576256, (2026/06/16 00:07UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.19 152 7Del Sco 16:00:20.0 -22:37:19 2.3 5.08 145 PPM 264761 15:50:34.7 -26:17:23 6.5 0.80 144 PPM 264670 15:46:39.3 -26:42:26 8.5 0.42 143 PPM 264721 15:48:44.6 -27:11:31 8.8 0.30 143 576256 15:48:19.4 -26:54:19 14.4 143 Positions are for J2000
Event circumstances last updated at 2022/01/14 00:39:09 UT
Marc W. Buie, Southwest Research Institute