Event between (353222) 09YD7 and star GA1120:03146926 with event index number of 310560
Geocentric closest approach at 2019/06/04 21:14:38 UTC
J2000 position of star is 09:24:43.5 +23:16:18
Equinox of date position of star is 09:25:49.3 +23:11:19
Stellar brightness G=12.6,
use SENSEUP=16
Star is 44 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=22.2
TNO is 15.9 AU from the Sun
and 16.4 AU from the Earth.
The TNO is moving 21.7
km/sec on the sky relative to the star, or,
6.6 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
973 km.
The TNO has an absolute magnitude Hv=9.8
Diameter=66.1 km assuming a 5% albedo -- 3.0 sec chord
Diameter=27.0 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURS
Star training set for 353222, (2019/06/04 21:15UT) Object RA Dec mag sep mel Regulus 10:09:24.3 +11:52:18 1.3 15.34 57 4Lam Leo 09:32:49.5 +22:52:53 4.3 1.64 46 PPM 099546 09:25:25.5 +23:29:41 8.2 0.32 44 PPM 099560 09:26:15.0 +22:55:00 10.3 0.29 44 353222 09:25:50.2 +23:11:14 12.6 44 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 353222, (2019/06/04 21:15UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 15.34 57 4Lam Leo 09:31:43.2 +22:58:04 4.3 1.64 46 PPM 099546 09:24:18.7 +23:34:45 8.2 0.32 44 PPM 099560 09:25:08.4 +23:00:04 10.3 0.29 44 353222 09:24:43.5 +23:16:18 12.6 44 Positions are for J2000
Event circumstances last updated at 2019/02/27 19:29:00 UT
Marc W. Buie, Southwest Research Institute