Event between (576212) 12HL85 and star GA0680:06232231 with event index number of 2523720
Geocentric closest approach at 2026/07/07 08:28:52 UTC
J2000 position of star is 15:22:04.4 -20:39:25
Equinox of date position of star is 15:23:20.7 -20:44:05
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon.
Moon is 55% illuminated.
TNO apparent brightness V=22.7
TNO is 40.9 AU from the Sun
and 40.3 AU from the Earth.
The TNO is moving 13.8
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 279 seconds.
The 1-sigma cross-track error in the shadow position is
2917 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 21.8 sec chord
Diameter=123.3 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 576212, (2026/07/07 08:29UT) Object RA Dec mag sep mel Antares 16:31:02.3 -26:29:18 0.9 16.46 120 7Del Sco 16:01:54.4 -22:41:42 2.3 9.10 127 PPM 264334 15:32:08.5 -20:49:04 6.5 2.00 134 PPM 264102 15:21:20.0 -20:58:00 8.5 0.57 137 PPM 264145 15:23:09.0 -20:43:40 9.6 0.11 136 576212 15:23:36.2 -20:45:02 14.8 136 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 576212, (2026/07/07 08:29UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.46 120 7Del Sco 16:00:20.0 -22:37:19 2.3 9.10 127 PPM 264334 15:30:36.3 -20:43:43 6.5 2.00 134 PPM 264102 15:19:48.1 -20:52:19 8.5 0.57 137 PPM 264145 15:21:37.1 -20:38:03 9.6 0.11 136 576212 15:22:04.4 -20:39:25 14.8 136 Positions are for J2000
Event circumstances last updated at 2022/01/15 00:12:00 UT
Marc W. Buie, Southwest Research Institute