Event between (576212) 12HL85 and star GA0660:06599294 with event index number of 2523784
Geocentric closest approach at 2028/05/20 11:17:11 UTC
J2000 position of star is 15:35:52.4 -22:14:49
Equinox of date position of star is 15:37:10.2 -22:19:09
Stellar brightness G=15.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon.
Moon is 15% illuminated.
TNO apparent brightness V=22.6
TNO is 40.9 AU from the Sun
and 39.9 AU from the Earth.
The TNO is moving 25.0
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 211 seconds.
The 1-sigma cross-track error in the shadow position is
3340 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 12.1 sec chord
Diameter=123.3 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is SCATEXTD
Star training set for 576212, (2028/05/20 11:17UT) Object RA Dec mag sep mel Antares 16:31:09.2 -26:29:33 0.9 12.88 125 7Del Sco 16:02:01.0 -22:42:00 2.3 5.66 132 PPM 264469 15:39:28.5 -23:14:01 5.8 1.00 137 PPM 264464 15:39:11.2 -22:12:30 7.4 0.40 137 PPM 264417 15:36:51.3 -22:14:06 9.6 0.19 137 576212 15:37:32.3 -22:20:22 15.2 137 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, (2028/05/20 11:17UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.88 125 7Del Sco 16:00:20.0 -22:37:19 2.3 5.66 132 PPM 264469 15:37:48.0 -23:08:32 5.8 1.00 137 PPM 264464 15:37:31.3 -22:07:01 7.4 0.40 137 PPM 264417 15:35:11.5 -22:08:31 9.6 0.19 137 576212 15:35:52.4 -22:14:49 15.2 137 Positions are for J2000
Event circumstances last updated at 2022/02/13 02:21:12 UT
Marc W. Buie, Southwest Research Institute