Event between (523767) 14WH510 and star GA0880:03717576 with event index number of 1154254
Geocentric closest approach at 2021/05/22 20:33:14 UTC
J2000 position of star is 09:26:53.9 -01:32:30
Equinox of date position of star is 09:27:58.6 -01:38:04
Stellar brightness G=13.5,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 51 degrees from the moon.
Moon is 82% illuminated.
TNO apparent brightness V=22.1
TNO is 33.8 AU from the Sun
and 33.9 AU from the Earth.
The TNO is moving 11.7
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 130 seconds.
The 1-sigma cross-track error in the shadow position is
1332 km.
The TNO has an absolute magnitude Hv=6.6
Diameter=292.4 km assuming a 5% albedo -- 25.0 sec chord
Diameter=119.4 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is CENTAURS
Star training set for 523767, (2021/05/22 20:34UT) Object RA Dec mag sep mel Regulus 10:09:30.5 +11:51:43 1.3 16.99 42 Alphard 09:28:38.3 -08:45:08 2.0 7.12 51 PPM 177884 09:30:29.4 -02:17:59 6.4 0.91 50 PPM 177857 09:27:09.2 -01:19:42 7.4 0.37 51 PPM 177864 09:27:54.4 -01:51:32 9.1 0.22 50 PPM 177858 09:27:21.3 -01:31:25 10.7 0.19 51 523767 09:27:59.2 -01:38:07 13.5 50 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 523767, (2021/05/22 20:34UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 16.99 42 Alphard 09:27:35.2 -08:39:30 2.0 7.12 51 PPM 177884 09:29:24.3 -02:12:19 6.4 0.91 50 PPM 177857 09:26:03.8 -01:14:06 7.4 0.37 51 PPM 177864 09:26:49.2 -01:45:55 9.1 0.22 50 PPM 177858 09:26:16.0 -01:25:49 10.7 0.19 51 523767 09:26:53.9 -01:32:30 13.5 50 Positions are for J2000
Event circumstances last updated at 2021/03/11 01:30:52 UT
Marc W. Buie, Southwest Research Institute