Event between (90568) 04GV9 and star UC4-324-073577 with event index number of 69118
Geocentric closest approach at 2017/07/30 07:10:29 UTC
J2000 position of star is 14:45:30.6 -25:14:40
Equinox of date position of star is 14:46:28.8 -25:18:50
Stellar brightness R=13.6
Star is 19 degrees from the moon.
Moon is 47% illuminated.
TNO apparent brightness V=20.1
TNO is 39.5 AU from the Sun
and 39.3 AU from the Earth.
The TNO is moving 6.1
km/sec on the sky relative to the star, or,
0.8 arcsec/hr.
The 1-sigma error in the time of the event is 313 seconds.
The 1-sigma cross-track error in the shadow position is
3083 km.
The TNO has an absolute magnitude Hv=4.0
Diameter=955.0 km assuming a 5% albedo -- 156.2 sec chord
Diameter=389.9 km assuming a 30% albedo -- 63.8 sec chord
Dynamical classification is SCATEXTD
Star training set for 90568, (2017/07/30 07:10UT) Object RA Dec mag sep mel Antares 16:30:29.3 -26:28:10 0.9 23.37 37 5The Cen 14:07:43.4 -36:27:20 2.1 13.89 28 54 Hya 14:47:01.6 -25:31:02 3.8 0.23 19 90568 14:46:32.0 -25:19:03 13.6 19 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 90568, (2017/07/30 07:10UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 23.37 37 5The Cen 14:06:40.2 -36:22:21 2.1 13.89 28 54 Hya 14:46:00.1 -25:26:39 3.8 0.23 19 90568 14:45:30.6 -25:14:40 13.6 19 Positions are for J2000
Event circumstances last updated at 2016/09/04 18:27:13 UT
Marc W. Buie, Southwest Research Institute