Event between (503858) 98HQ151 and star GA0760:20408250 with event index number of 2452141
Geocentric closest approach at 2022/08/27 17:05:58 UTC
J2000 position of star is 19:01:14.7 -12:17:56
Equinox of date position of star is 19:02:29.2 -12:15:58
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 125 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=24.1
TNO is 33.3 AU from the Sun
and 32.7 AU from the Earth.
The TNO is moving 14.1
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 863 seconds.
The 1-sigma cross-track error in the shadow position is
5503 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 7.4 sec chord
Diameter=42.8 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E
Star training set for 503858, (2022/08/27 17:06UT) Object RA Dec mag sep mel Antares 16:30:48.0 -26:28:49 0.9 38.31 92 Nunki 18:56:40.1 -26:16:00 2.0 14.07 124 PPM 235105 18:51:48.0 -13:32:40 6.5 2.91 122 PPM 235340 19:01:26.9 -12:13:58 8.1 0.26 124 503858 19:02:30.8 -12:15:55 16.5 125 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 503858, (2022/08/27 17:06UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 38.31 92 Nunki 18:55:15.9 -26:17:49 2.0 14.07 124 PPM 235105 18:50:31.2 -13:34:20 6.5 2.91 122 PPM 235340 19:00:10.9 -12:15:58 8.1 0.26 124 503858 19:01:14.7 -12:17:56 16.5 125 Positions are for J2000
Event circumstances last updated at 2022/03/16 00:57:34 UT
Marc W. Buie, Southwest Research Institute