Event between (523761) 14WU509 and star GA0940:00945019 with event index number of 1058746
Geocentric closest approach at 2021/03/07 09:21:03 UTC
J2000 position of star is 05:49:50.8 +04:17:36
Equinox of date position of star is 05:50:57.7 +04:17:53
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon.
Moon is 36% illuminated.
TNO apparent brightness V=22.1
TNO is 40.6 AU from the Sun
and 40.4 AU from the Earth.
The TNO is moving 9.3
km/sec on the sky relative to the star, or,
1.1 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is
2357 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 42.8 sec chord
Diameter=162.5 km assuming a 30% albedo -- 17.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 523761, (2021/03/07 09:21UT) Object RA Dec mag sep mel Betelgeuse 05:56:19.1 +07:24:33 0.4 3.38 162 34Del Ori 05:33:05.4 -00:17:06 2.2 6.40 152 PPM 149639 05:56:03.4 +05:51:47 6.4 2.01 160 PPM 149510 05:50:25.4 +04:22:35 8.3 0.16 158 PPM 149536 05:51:27.8 +04:17:32 10.6 0.12 158 523761 05:50:58.1 +04:17:53 16.8 158 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 523761, (2021/03/07 09:21UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 3.38 162 34Del Ori 05:32:00.4 -00:17:57 2.2 6.40 152 PPM 149639 05:54:55.4 +05:51:39 6.4 2.01 160 PPM 149510 05:49:18.1 +04:22:17 8.3 0.16 158 PPM 149536 05:50:20.6 +04:17:15 10.6 0.12 158 523761 05:49:50.8 +04:17:36 16.8 158 Positions are for J2000
Event circumstances last updated at 2021/01/19 20:50:45 UT
Marc W. Buie, Southwest Research Institute