Event between (50000) Quaoar and star GA0740:16362806 with event index number of 316931
Geocentric closest approach at 2020/08/13 20:39:00 UTC
J2000 position of star is 18:10:31.4 -15:20:00
Equinox of date position of star is 18:11:42.2 -15:19:40
Stellar brightness G=12.9,
use SENSEUP=32
Star is 162 degrees from the moon.
Moon is 30% illuminated.
TNO apparent brightness V=26.4
TNO is 42.8 AU from the Sun
and 42.1 AU from the Earth.
The TNO is moving 14.9
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 137 seconds.
The 1-sigma cross-track error in the shadow position is
1671 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=1995.3 km assuming a 5% albedo -- 4.0 sec chord
Diameter=814.6 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 50000, (2020/08/13 20:39UT) Object RA Dec mag sep mel Antares 16:30:40.5 -26:28:34 0.9 26.03 172 35Eta Oph 17:11:33.7 -15:44:56 2.6 14.49 173 PPM 234113 18:10:53.6 -13:55:45 6.4 1.41 161 PPM 234112 18:10:54.0 -15:16:38 7.7 0.20 162 50000 18:11:42.3 -15:19:40 12.9 162 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 50000, (2020/08/13 20:39UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 26.03 172 35Eta Oph 17:10:22.7 -15:43:29 2.6 14.49 173 PPM 234113 18:09:43.4 -13:56:04 6.4 1.41 161 PPM 234112 18:09:43.1 -15:16:57 7.7 0.20 162 50000 18:10:31.4 -15:20:00 12.9 162 Positions are for J2000
Event circumstances last updated at 2020/07/30 21:46:16 UT
Marc W. Buie, Southwest Research Institute