Event between (523659) 12HG84 and star GA0640:07618028 with event index number of 309124
Geocentric closest approach at 2020/09/24 23:19:31 UTC
J2000 position of star is 16:12:18.8 -24:48:50
Equinox of date position of star is 16:13:30.6 -24:51:49
Stellar brightness G=15.9,
use SENSEUP=128
Star is 38 degrees from the moon.
Moon is 60% illuminated.
TNO apparent brightness V=21.6
TNO is 40.2 AU from the Sun
and 40.6 AU from the Earth.
The TNO is moving 18.6
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 641 seconds.
The 1-sigma cross-track error in the shadow position is
1995 km.
The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 27.0 sec chord
Diameter=204.6 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is CLASSICAL
Star training set for 523659, (2020/09/24 23:20UT) Object RA Dec mag sep mel Antares 16:30:40.9 -26:28:34 0.9 4.18 34 7Del Sco 16:01:33.8 -22:40:45 2.3 3.51 41 PPM 265182 16:09:58.3 -23:44:21 5.9 1.39 39 PPM 265227 16:12:17.2 -25:10:13 8.1 0.42 38 PPM 265235 16:12:45.2 -24:48:31 9.0 0.19 38 523659 16:13:34.0 -24:51:57 15.9 37 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 523659, (2020/09/24 23:20UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 4.18 34 7Del Sco 16:00:20.0 -22:37:18 2.3 3.51 41 PPM 265182 16:08:43.7 -23:41:08 5.9 1.39 39 PPM 265227 16:11:01.8 -25:07:04 8.1 0.42 38 PPM 265235 16:11:30.1 -24:45:22 9.0 0.19 38 523659 16:12:18.8 -24:48:50 15.9 38 Positions are for J2000
Event circumstances last updated at 2019/10/16 21:26:14 UT
Marc W. Buie, Southwest Research Institute