Event between (576256) 12JH67 and star GA0620:07455326 with event index number of 2523950
Geocentric closest approach at 2025/06/25 21:56:27 UTC
J2000 position of star is 15:43:05.1 -26:37:50
Equinox of date position of star is 15:44:24.5 -26:41:56
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.4
TNO is 48.1 AU from the Sun
and 47.3 AU from the Earth.
The TNO is moving 20.1
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 283 seconds.
The 1-sigma cross-track error in the shadow position is
4193 km.
The TNO has an absolute magnitude Hv=5.5
Diameter=476.4 km assuming a 5% albedo -- 23.7 sec chord
Diameter=194.5 km assuming a 30% albedo -- 9.7 sec chord
Dynamical classification is 2:1E
Star training set for 576256, (2025/06/25 21:56UT) Object RA Dec mag sep mel Antares 16:30:58.4 -26:29:11 0.9 10.36 149 7Del Sco 16:01:50.7 -22:41:32 2.3 5.61 142 PPM 264463 15:39:00.6 -26:21:44 6.4 1.30 137 PPM 264670 15:48:12.0 -26:47:05 8.5 0.80 140 PPM 264608 15:44:38.1 -26:51:18 9.4 0.14 139 576256 15:44:37.6 -26:42:36 16.2 139 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, (2025/06/25 21:56UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.36 149 7Del Sco 16:00:20.0 -22:37:19 2.3 5.61 142 PPM 264463 15:37:28.5 -26:16:48 6.4 1.30 137 PPM 264670 15:46:39.3 -26:42:26 8.5 0.80 140 PPM 264608 15:43:05.4 -26:46:32 9.4 0.14 139 576256 15:43:05.1 -26:37:50 16.2 139 Positions are for J2000
Event circumstances last updated at 2021/11/11 00:05:02 UT
Marc W. Buie, Southwest Research Institute