Event between (503858) 98HQ151 and star GA0760:21230598 with event index number of 2452065
Geocentric closest approach at 2022/06/02 20:31:07 UTC
J2000 position of star is 19:08:47.5 -12:05:24
Equinox of date position of star is 19:10:01.8 -12:03:12
Stellar brightness G=16.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon.
Moon is 10% illuminated.
TNO apparent brightness V=24.1
TNO is 33.3 AU from the Sun
and 32.4 AU from the Earth.
The TNO is moving 18.9
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 857 seconds.
The 1-sigma cross-track error in the shadow position is
4302 km.
The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 5.5 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 3:2E
Star training set for 503858, (2022/06/02 20:31UT) Object RA Dec mag sep mel Antares 16:30:47.1 -26:28:47 0.9 40.05 141 Nunki 18:56:39.2 -26:16:01 2.0 14.56 173 PPM 235666 19:14:30.7 -12:14:35 5.2 1.11 166 PPM 235496 19:07:40.1 -11:51:50 7.6 0.61 165 PPM 235568 19:10:37.0 -12:03:09 9.0 0.14 165 503858 19:10:02.5 -12:03:10 16.5 165 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, (2022/06/02 20:31UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 40.05 141 Nunki 18:55:15.9 -26:17:49 2.0 14.56 173 PPM 235666 19:13:15.6 -12:16:58 5.2 1.11 166 PPM 235496 19:06:25.1 -11:54:00 7.6 0.61 165 PPM 235568 19:09:22.0 -12:05:24 9.0 0.14 165 503858 19:08:47.5 -12:05:24 16.5 165 Positions are for J2000
Event circumstances last updated at 2022/03/15 01:03:41 UT
Marc W. Buie, Southwest Research Institute