Event between 12HG84 and star UC4-327-076466 with event index number of 162642
Geocentric closest approach at 2017/08/18 04:45:56 UTC
J2000 position of star is 15:51:45.3 -24:44:14
Equinox of date position of star is 15:52:47.5 -24:47:18
Stellar brightness R=14.9,
use SENSEUP=128
Star is 143 degrees from the moon.
Moon is 17% illuminated.
TNO apparent brightness V=21.9
TNO is 40.4 AU from the Sun
and 40.3 AU from the Earth.
The TNO is moving 3.7
km/sec on the sky relative to the star, or,
0.5 arcsec/hr.
The 1-sigma error in the time of the event is 2427 seconds.
The 1-sigma cross-track error in the shadow position is
5225 km.
The TNO has an absolute magnitude Hv=5.7
Diameter=440.6 km assuming a 5% albedo -- 118.2 sec chord
Diameter=179.9 km assuming a 30% albedo -- 48.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 12HG84, (2017/08/18 04:46UT) Object RA Dec mag sep mel Antares 16:30:29.5 -26:28:11 0.9 8.66 151 7Del Sco 16:01:22.7 -22:40:14 2.3 2.89 145 PPM 264828 15:54:57.3 -24:35:04 5.3 0.53 143 PPM 264863 15:56:26.0 -24:43:15 8.4 0.83 143 PPM 264785 15:52:48.5 -24:57:05 9.3 0.16 143 PPM 264784 15:52:47.8 -24:45:35 10.1 0.03 143 12HG84 15:52:48.7 -24:47:21 14.9 143 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 12HG84, (2017/08/18 04:46UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 8.66 151 7Del Sco 16:00:20.0 -22:37:18 2.3 2.89 145 PPM 264828 15:53:53.9 -24:32:00 5.3 0.53 143 PPM 264863 15:55:22.5 -24:40:13 8.4 0.83 143 PPM 264785 15:51:45.0 -24:53:58 9.3 0.16 143 PPM 264784 15:51:44.4 -24:42:28 10.1 0.03 143 12HG84 15:51:45.3 -24:44:14 14.9 143 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:10:21 UT
Marc W. Buie, Southwest Research Institute