Event between (523790) 15HP9 and star GA0700:07393853 with event index number of 2601335
Geocentric closest approach at 2022/04/02 12:53:19 UTC
J2000 position of star is 16:58:35.4 -19:43:36
Equinox of date position of star is 16:59:54.0 -19:45:33
Stellar brightness G=16.3,
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 2% illuminated.
TNO apparent brightness V=22.6
TNO is 15.8 AU from the Sun
and 15.3 AU from the Earth.
The TNO is moving 5.6
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 429 seconds.
The 1-sigma cross-track error in the shadow position is
1426 km.
The TNO has an absolute magnitude Hv=10.4
Diameter=50.1 km assuming a 5% albedo -- 9.0 sec chord
Diameter=20.5 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
Star training set for 523790, (2022/04/02 12:53UT) Object RA Dec mag sep mel Antares 16:30:46.5 -26:28:46 0.9 9.48 138 35Eta Oph 17:11:39.4 -15:45:03 2.6 4.89 130 PPM 232367 16:58:22.5 -19:34:25 6.1 0.40 133 PPM 232393 16:59:12.2 -19:49:29 8.4 0.18 133 PPM 232421 17:00:12.7 -19:38:32 9.7 0.14 132 523790 16:59:54.2 -19:45:33 16.3 132 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 523790, (2022/04/02 12:53UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.48 138 35Eta Oph 17:10:22.7 -15:43:29 2.6 4.89 130 PPM 232367 16:57:03.9 -19:32:25 6.1 0.40 133 PPM 232393 16:57:53.4 -19:47:31 8.4 0.18 133 PPM 232421 16:58:54.1 -19:36:36 9.7 0.14 132 523790 16:58:35.4 -19:43:36 16.3 132 Positions are for J2000
Event circumstances last updated at 2022/03/15 01:00:09 UT
Marc W. Buie, Southwest Research Institute