Event between (32532) Thereus and star GA0860:03735775 with event index number of 1146644
Geocentric closest approach at 2021/05/22 22:19:21 UTC
J2000 position of star is 09:25:22.1 -02:40:55
Equinox of date position of star is 09:26:26.4 -02:46:27
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 52 degrees from the moon.
Moon is 82% illuminated.
TNO apparent brightness V=20.3
TNO is 12.2 AU from the Sun
and 12.2 AU from the Earth.
The TNO is moving 14.7
km/sec on the sky relative to the star, or,
6.0 arcsec/hr.
The 1-sigma error in the time of the event is 41 seconds.
The 1-sigma cross-track error in the shadow position is
479 km.
The TNO has an absolute magnitude Hv=9.0
Diameter=94.6 km assuming a 5% albedo -- 6.4 sec chord
Diameter=38.6 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
Star training set for 32532, (2021/05/22 22:19UT) Object RA Dec mag sep mel Regulus 10:09:30.5 +11:51:43 1.3 18.13 43 Alphard 09:28:38.3 -08:45:08 2.0 6.00 52 PPM 177884 09:30:29.4 -02:17:59 6.4 1.12 51 PPM 177865 09:27:55.4 -02:35:50 8.9 0.41 51 PPM 177852 09:26:21.9 -02:45:14 10.3 0.03 52 32532 09:26:27.0 -02:46:31 15.3 52 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 32532, (2021/05/22 22:19UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 18.13 43 Alphard 09:27:35.2 -08:39:30 2.0 6.00 52 PPM 177884 09:29:24.3 -02:12:19 6.4 1.12 51 PPM 177865 09:26:50.5 -02:30:13 8.9 0.41 51 PPM 177852 09:25:16.9 -02:39:38 10.3 0.03 52 32532 09:25:22.1 -02:40:55 15.3 52 Positions are for J2000
Event circumstances last updated at 2021/03/05 00:19:43 UT
Marc W. Buie, Southwest Research Institute