Event between (50000) Quaoar and star GA0740:19665112 with event index number of 2325749
Geocentric closest approach at 2023/05/26 15:51:18 UTC
J2000 position of star is 18:32:44.9 -15:03:49
Equinox of date position of star is 18:34:03.2 -15:02:43
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 41% illuminated.
TNO apparent brightness V=18.8
TNO is 42.7 AU from the Sun
and 41.9 AU from the Earth.
The TNO is moving 20.0
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 107 seconds.
The 1-sigma cross-track error in the shadow position is
1521 km.
The TNO has an absolute magnitude Hv=2.4
Diameter=1905.5 km assuming a 5% albedo -- 98.9 sec chord
Diameter=777.9 km assuming a 30% albedo -- 40.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 50000, (2023/05/26 15:53UT) Object RA Dec mag sep mel Antares 16:30:50.8 -26:28:55 0.9 30.89 106 Nunki 18:56:42.9 -26:15:56 2.0 12.40 138 PPM 234686 18:34:03.5 -14:50:49 5.1 0.20 132 PPM 234662 18:33:10.7 -15:09:52 7.8 0.25 132 PPM 234686 18:34:03.5 -14:50:49 5.1 0.20 132 50000 18:34:05.2 -15:02:41 14.8 132 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, (2023/05/26 15:53UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 30.89 106 Nunki 18:55:15.9 -26:17:49 2.0 12.40 138 PPM 234686 18:32:43.3 -14:51:57 5.1 0.20 132 PPM 234662 18:31:50.4 -15:10:58 7.8 0.25 132 PPM 234686 18:32:43.3 -14:51:57 5.1 0.20 132 50000 18:32:44.9 -15:03:49 14.8 132 Positions are for J2000
Event circumstances last updated at 2022/10/24 03:55:05 UT
Marc W. Buie, Southwest Research Institute