Event between (523790) 15HP9 and star GA0700:06373924 with event index number of 1151987
Geocentric closest approach at 2021/06/06 19:27:00 UTC
J2000 position of star is 16:21:46.7 -18:19:51
Equinox of date position of star is 16:23:00.1 -18:22:46
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 150 degrees from the moon.
Moon is 12% illuminated.
TNO apparent brightness V=22.2
TNO is 15.5 AU from the Sun
and 14.5 AU from the Earth.
The TNO is moving 21.1
km/sec on the sky relative to the star, or,
7.2 arcsec/hr.
The 1-sigma error in the time of the event is 87 seconds.
The 1-sigma cross-track error in the shadow position is
728 km.
The TNO has an absolute magnitude Hv=10.4
Diameter=50.1 km assuming a 5% albedo -- 2.4 sec chord
Diameter=20.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 523790, (2021/06/06 19:27UT) Object RA Dec mag sep mel Antares 16:30:43.5 -26:28:40 0.9 8.29 146 8Bet1Sco 16:06:41.2 -19:51:45 2.6 4.13 153 7Chi Oph 16:28:16.1 -18:30:11 4.1 1.25 149 PPM 231543 16:21:27.4 -18:27:46 8.5 0.38 150 PPM 231570 16:22:20.8 -18:16:11 9.5 0.19 150 523790 16:23:01.2 -18:22:48 16.7 150 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 523790, (2021/06/06 19:27UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 8.29 146 8Bet1Sco 16:05:26.2 -19:48:20 2.6 4.13 153 7Chi Oph 16:27:01.4 -18:27:23 4.1 1.25 149 PPM 231543 16:20:12.8 -18:24:46 8.5 0.38 150 PPM 231570 16:21:06.3 -18:13:13 9.5 0.19 150 523790 16:21:46.7 -18:19:51 16.7 150 Positions are for J2000
Event circumstances last updated at 2021/02/06 21:04:36 UT
Marc W. Buie, Southwest Research Institute