Event between (50000) Quaoar and star GA0740:14478043 with event index number of 149097
Geocentric closest approach at 2018/09/02 18:03:39 UTC
J2000 position of star is 17:59:02.1 -15:27:30
Equinox of date position of star is 18:00:05.5 -15:27:31
Stellar brightness G=12.7,
use SENSEUP=32
Star is 156 degrees from the moon.
Moon is 54% illuminated.
TNO apparent brightness V=18.9
TNO is 42.9 AU from the Sun
and 42.5 AU from the Earth.
The TNO is moving 6.3
km/sec on the sky relative to the star, or,
0.7 arcsec/hr.
The 1-sigma error in the time of the event is 415 seconds.
The 1-sigma cross-track error in the shadow position is
1690 km.
The TNO has an absolute magnitude Hv=2.4
Diameter=1995.3 km assuming a 5% albedo -- 317.0 sec chord
Diameter=814.6 km assuming a 30% albedo -- 129.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 50000, (2018/09/02 18:04UT) Object RA Dec mag sep mel Antares 16:30:33.3 -26:28:19 0.9 23.57 170 35Eta Oph 17:11:27.0 -15:44:48 2.6 11.72 167 PPM 233766 17:57:23.5 -15:48:51 6.1 0.74 156 PPM 233865 18:00:35.5 -15:09:02 7.9 0.33 156 PPM 233833 17:59:41.6 -15:36:23 8.7 0.18 156 50000 18:00:06.4 -15:27:31 12.7 156 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, (2018/09/02 18:04UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 23.57 170 35Eta Oph 17:10:22.7 -15:43:29 2.6 11.72 167 PPM 233766 17:56:19.0 -15:48:46 6.1 0.74 156 PPM 233865 17:59:31.3 -15:09:02 7.9 0.33 156 PPM 233833 17:58:37.3 -15:36:22 8.7 0.18 156 50000 17:59:02.1 -15:27:30 12.7 156 Positions are for J2000
Event circumstances last updated at 2018/06/05 16:23:10 UT
Marc W. Buie, Southwest Research Institute