Event between (503858) 98HQ151 and star GA0760:17820881 with event index number of 1006611
Geocentric closest approach at 2020/10/30 18:41:53 UTC
J2000 position of star is 18:45:50.3 -13:24:28
Equinox of date position of star is 18:46:59.6 -13:23:05
Stellar brightness G=16.6,
use SENSEUP=128
Star is 108 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=25.4
TNO is 32.8 AU from the Sun
and 33.2 AU from the Earth.
The TNO is moving 19.5
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 378 seconds.
The 1-sigma cross-track error in the shadow position is
2876 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=104.7 km assuming a 5% albedo -- 3.1 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is 3:2E
Star training set for 503858, (2020/10/30 18:42UT) Object RA Dec mag sep mel Antares 16:30:41.3 -26:28:35 0.9 34.47 138 Nunki 18:56:33.3 -26:16:08 2.0 13.08 106 PPM 235105 18:51:41.8 -13:32:48 6.5 1.15 107 PPM 234987 18:46:50.6 -13:38:53 8.5 0.27 108 PPM 234989 18:46:56.5 -13:27:10 9.9 0.07 108 503858 18:47:00.8 -13:23:04 16.6 108 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, (2020/10/30 18:42UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 34.47 138 Nunki 18:55:15.9 -26:17:49 2.0 13.08 106 PPM 235105 18:50:31.2 -13:34:20 6.5 1.15 107 PPM 234987 18:45:39.9 -13:40:17 8.5 0.27 108 PPM 234989 18:45:45.9 -13:28:34 9.9 0.07 108 503858 18:45:50.3 -13:24:28 16.6 108 Positions are for J2000
Event circumstances last updated at 2020/06/21 22:26:19 UT
Marc W. Buie, Southwest Research Institute